Page 1 SERVICE MANUAL DIGITAL PLAIN PAPER COPIER 8070/6570 5570/4580...
Page 2 GENERAL PRECAUTIONS REGARDING THE INSTALLATION AND SERVICE FOR THE COPIER 6570, 5570 The installation and service should be done by a qualified service technician. Transportation/Installation • When transporting/installing the copier, move it by the casters while lifting the stoppers. The copier is quite heavy and weighs approximately 250 kg (551 lb), therefore pay full attention when handling it.
Page 3 Disposition of Consumable Parts/Packing Materials • Regarding the recovery and disposal of the copier, supplies, consumable parts and packing materials, it is recommended to follow the relevant local regulations or rules. When parts are disassembled, reassembly is basically the reverse of disassembly unless otherwise noted in this manual or other related documents.
Page 4: Specifications
: 38 (34) sheets/minute Note: CPM in a parenthesis is the specification of the 5500/5570. (2) In the models of 8000/8070 (4580) * In the case of the automatic documnent feeder, 65 (45) sheets/minute when an A4(LT) size single-sided original is fed in the continuous copy mode at original size by the LCF.
Page 5 Toner hopper supply • Exposure control .... Automatic control and manually selectable (11 steps) • Weight ......Copier: 250 kg 8070/6570/5570/4580 SPECIFICATIONS 8070/6570/5570/4580 SPECIFICATIONS 1 - 2A 1 - 2 Mar. 2000 © TOSHIBA TEC Mar. 2000 © TOSHIBA TEC...
Page 6 • Total counter ....Mechanical total counter • Machine size ....Refer to the figure below 920mm 742mm * The specifications and external appearance are subject to change without notice in the interest of product improvement. Mar. 2000 © TOSHIBA TEC 1 - 3 8070/6570/5570/4580 SPECIFICATIONS...
Page 7 Hole punch MJ-6002N — MJ-6002E MJ-6002F MJ-6002S Staple cartridge STAPLE-600, STAPLE-700 Key counter MU-8, MU-10 Working tray KK-6570 1.4 Supplies Drum OD-6570 Developer D-6570 Toner bag TB-6550, TB-6550E Toner T-6570, T-6570E 8070/6570/5570/4580 SPECIFICATIONS 1 - 4 Mar. 2000 © TOSHIBA TEC...
Page 8: System List
1.5 System List 1) For DP4580/5570/6570/8070 Key counter MU-10 Working tray KK-6570 Key counter socket Staple MU-8 cartridge Finisher STAPLE-600 MJ-1016 MJ-1017 STAPLE-700 Supplies Drum Developer Toner bag Toner Mar. 2000 © TOSHIBA TEC 1 - 5 8070/6570/5570/4580 SPECIFICATIONS...
Page 9 Working tray KK-6570 Key counter socket Staple MU-8 cartridge Finisher STAPLE-600 MJ-1015 MJ-1016 STAPLE-700 Supplies Drum Developer Toner bag Toner 8070/6570/5570/4580 SPECIFICATIONS 8070/6570/5570/4580 SPECIFICATIONS 1 - 6A 1 - 6 Mar. 2000 © TOSHIBA TEC Mar. 2000 © TOSHIBA TEC...
Page 10: Outline Of The Machine
OUTLINE OF THE MACHINE 2.1 Sectional Views and Electrical Parts Location Diagram 2.1.1 Sectional View [A] Front views of copiers excluding drive systems Mar. 1999 © TOSHIBA TEC 2 - 1 6570/5570 OUTLINE...
Page 11: Table Of Contents
Main charger wire cleaner LCF feed roller Drum LCF pick-up roller Toner adhesion sensor LCF separation roller Separation claw Aligning roller Toner recovery auger Elevator tray Recovery blade LCF (large capacity feeder) 6570/5570 OUTLINE 2 - 2 Mar. 1999 © TOSHIBA TEC...
Page 12 PFP middle pick-up roller Cleaning roller 4 Middle elevator Manual feed inlet fan PFP upper pick-up roller System fan Lower elevator Laser unit fan Lower cassette Transfer belt cleaning blade Mar. 1999 © TOSHIBA TEC 2 - 3 6570/5570 OUTLINE...
Page 13 Belt for the toner auger (M15) ADU inlet/reversal roller Main cleaning motor (M11) Forward rotation clutch Toner recovery auger Reversal clutch Toner transport auger Holding gate solenoid Fur brush Transport roller clutch Transport roller (G23) 6570/5570 OUTLINE 2 - 4 Mar. 1999 © TOSHIBA TEC...
Page 15 Paper transport roller 3 Heater fan (M20) Paper transport roller 4 Reversal fan (M27) Upper heat roller pulley Duct in fan (M22) Fuser drive belt Developer fan (M23) Heat roller motor (M18) 6570/5570 OUTLINE 2 - 6 Mar. 1999 © TOSHIBA TEC...
Page 17 2.1.2 Electrical parts layout [A] Configuration of Units Rear side 6570/5570 OUTLINE 2 - 8 Mar. 1999 © TOSHIBA TEC...
Page 18 [B] Scanner Unit (B-1) PC board Scanner unit Rear side Name Symbol CCD drive PC board (PWA-F-CCD-300) Scanning optical system control PC board (PWA-F-SLG-300) Scanning motor drive PC board (PWA-F-SDV-300) Mar. 1999 © TOSHIBA TEC 2 - 9 6570/5570 OUTLINE...
Page 19 Rear side Name Symbol Automatic paper size detector (APS1-6) S1-6 Home switch (HOME-SW) [LT series] Scanner unit Rear side Name Symbol Automatic paper size detector (APS1-4) S1-4 Home switch (HOME-SW) 6570/5570 OUTLINE 2 - 10 Mar. 1999 © TOSHIBA TEC...
Page 20 Scanner unit Rear side Name Symbol Damp heater (M) (D-HTR-M) Damp heater (L) (D-HTR-L) Fuse PC board (PWA-F-FUS-351) Thermostat (85°C) THMO Exposure lamp (EXPO-LAMP) (EXP) Lamp regulator PC board (PS-LRG-300) Mar. 1999 © TOSHIBA TEC 2 - 11 6570/5570 OUTLINE...
Page 21 Polygon mirror motor drive PC board (M/A-DRV-POL-300) Sensor PC board (PWA-F-SNS-300) Laser PC board (K-PWA-F-LDR-300) (C-2) Electrical parts (except motors, PC boards) Laser unit Rear side Name Symbol Galvanomirror (ASM-GALVA) 6570/5570 OUTLINE 2 - 12 Mar. 1999 © TOSHIBA TEC...
Page 22 Rear side Name Symbol System PC board (PWA-F-SYS-300) Mother board (PWA-F-MTB-300) Hard disk (HDD) LAN printer board or SCSI board (option) LAN or SCSI NIC board (option for LAN printer board) Mar. 1999 © TOSHIBA TEC 2 - 13 6570/5570 OUTLINE...
Page 23 (D-2) Motor System unit Rear side Name Symbol System fan motor (FAN-SYS) [E] ADU (E-1) PC board Rear side Name Symbol ADU PC board (PWA-F-ADU-300) 6570/5570 OUTLINE 2 - 14 Mar. 1999 © TOSHIBA TEC...
Page 24 Transport clutch (TR-CLT) Reverse clutch (REV-CLT) Guide solenoid (GID-SOL) SOL1 Stack clutch (STK-CLT) Feed switch (FED-SW) Empty switch (EMP-SW) Aligning switch (RGT-SW) Aligning clutch (RGT-CLT) Feed clutch (FED-CLT) Side switch (SID-SW) Mar. 1999 © TOSHIBA TEC 2 - 15 6570/5570 OUTLINE...
Page 25 (E-3) Motors Rear side Name Symbol End guide motor (END-MOT) Side guide motor (SID-MOT) 6570/5570 OUTLINE 2 - 16 Mar. 1999 © TOSHIBA TEC...
Page 26 [F] Upper Unit (F-1) PC board Upper unit Rear side Name Symbol Motor control PC board (PWA-F-MOT-300) Mar. 1999 © TOSHIBA TEC 2 - 17 6570/5570 OUTLINE...
Page 27 Reversal switch (TRN-SW) Reversal door switch (EXC-SW) Discharge LED lamp (ERS-300) Gate solenoid (GATE-SOL) SOL4 Transfer belt touch switch (IR-TCH-SW) Transfer belt separation switch (TR-SEP-SW) Toner adhesion sensor Drum thermister THMSD 6570/5570 OUTLINE 2 - 18 Mar. 1999 © TOSHIBA TEC...
Page 28 Developer fan motor (DEV-FAN-MOT) Duct in fan motor (DUCT-IN-FAN-MOT) Duct out fan motor (DUCT-OUT-FAN-MOT) ADU motor (ADU-MOT) Transfer belt motor (TRB-MOT) Transfer belt cam motor (TRB-CAM-MOT) Reversal fan motor (REV-FAN-MOT) Mar. 1999 © TOSHIBA TEC 2 - 19 6570/5570 OUTLINE...
Page 29 Door switch (DOOR-SW) Main switch (MAIN-SW) Fuse PC board (PWA-F-FUS-351) Damp heater (lower) (D-HTR-L) DHL-1,-2 Thermostat THM-D Heater lamp (HTR-LAMP) HTR-L Fuser thermostat (THERMO-152-FUS) THM-F EXIT door switch (EXIT-AC-SW) Fuser switch (HTR-SW) 6570/5570 OUTLINE 2 - 20 Mar. 1999 © TOSHIBA TEC...
Page 30 [G] Lower Unit (G-1) PC boards Rear side Lower unit Name Symbol Logic PC board (PWA-F-LGC-300) LCF PC board (PWA-F-LCF-150) Mar. 1999 © TOSHIBA TEC 2 - 21 6570/5570 OUTLINE...
Page 31 Lower feed clutch (FD3-CLT) CL11 PFP upper paper empty switch Middle cassette switch (CST3-SW) (EMP2-SW) Lower cassette switch (CST3-SW) PFP upper tray up switch LCF door switch 2 (LCF-DOOR-SW) (TUP2-SW) 6570/5570 OUTLINE 2 - 22 Mar. 1999 © TOSHIBA TEC...
Page 32 Rear side Lower unit Name Symbol PFP upper tray motor (TR2-MOT) PFP middle tray motor (TR3-MOT) PFP lower tray motor (TR4-MOT) LCF tray motor (TRAY-MOT) Pedestal motor (PFP-MOT) Feed motor (FED-MOT) Mar. 1999 © TOSHIBA TEC 2 - 23 6570/5570 OUTLINE...
Page 33 Lower unit Rear side Name Symbol Breaker Noise filter Switching power supply unit for JPD (PS-ACC-300JU) Switching power supply unit for EUR (PS-ACC-300E) Power outlet POUT Fuse holder (FUSE -HOLDER) FHOL 6570/5570 OUTLINE 2 - 24 Mar. 1999 © TOSHIBA TEC...
Page 34 TRAY-MOT (LCF tray motor) Drives the LCF tray PFP-MOT (pedestal motor) Drives all rollers in the feed and transport systems FED-MOT (feed motor) Drives the feed roller and manual roller Mar. 1999 © TOSHIBA TEC 2 - 25 6570/5570 OUTLINE...
Page 35 Detects a paper in the ADU transporting section FED-SW (feed switch) Detects a leading edge of the paper in the ADU EMP-SW (empty switch) Detects a paper on the ADU stacking tray 6570/5570 OUTLINE 2 - 26 Mar. 1999 © TOSHIBA TEC...
Page 36 Detects a no paper state in the lower cassette TUP4-SW (PFP lower tray up switch) Detects rising of the lower tray T-UP-SW (LCF tray up switch) Detects rising of the LCF tray Mar. 1999 © TOSHIBA TEC 2 - 27 6570/5570 OUTLINE...
Page 37 (polygon mirror motor drive PC board) PWA-F-SNS-300 (sensor PC board) Detects the beam position K-PWA-F-LDR-300 (laser PC board) Drives the laser PWA-F-SYS-300 (system PC board) Whole system control and data processing 6570/5570 OUTLINE 2 - 28 Mar. 1999 © TOSHIBA TEC...
Page 38 For UC, JPD (switching power supply unit) PS-ACC-300E For Europe (switching power supply unit) Detects toner adhesion volume on the (Toner adhesion sensor) drum surface THMSD (Drum thermistor) Detects drum surface temperature Mar. 1999 © TOSHIBA TEC 2 - 29 6570/5570 OUTLINE...
Page 40 (1) Remove the intermediate and lower cassettes. (2) Remove the 3 screws. Lower front cover [D] Rear cover (1) Remove the 10 screws. (2) Remove the lower hook (3 p’ces). Rear cover Fooks Mar. 2000 © TOSHIBA TEC 2 - 31 8070/6570/5570/4580 OUTLINE...
Page 41 (2) Remove the lower feed cover (3 screws, 1 con- nector, both sides hooks 4 pcs.). Hooks [G] Power switch cover (1) Slide the LCF unit. (2) Remove the 3 screws. Power switch cover 6570/5570 OUTLINE 2 - 32 Mar. 1999 © TOSHIBA TEC...
Page 42 (4) Remove the lower exit cover (4 screws). Lower exit cover Left top cover (5) Remove the PFP exit cover (4 screws). Left top cover (1) Remove the 2 screws. PFP exit cover Mar. 1999 © TOSHIBA TEC 2 - 33 6570/5570 OUTLINE...
Page 43 (1) Remove the middle inner cover. (2) Remove the 3 screws. [P] Left inner cover Left front cover Right front cover (1) Remove the middle inner cover. (2) Remove the 3 screws. 6570/5570 OUTLINE 2 - 34 Mar. 1999 © TOSHIBA TEC...
Page 44 [A] Logic PC board (PWA-F-LGC-300) (1) Remove the rear cover. (2) Disconnect the 15 connectors. (3) Remove the lock supports (2 pcs.) and the 2 screws, then remove the logic PC board. Mar. 1999 © TOSHIBA TEC 2 - 35 6570/5570 OUTLINE...
Page 45 (1) Remove the rear cover. (2) Disconnect the 2 connectors. (3) Remove the 2 unit fixing screws and the earth lead fixing screws, and take out the developer bias transformer. Ground wire fixing screw 6570/5570 OUTLINE 2 - 36 Mar. 1999 © TOSHIBA TEC...
Page 46 Note: Claws are located on the base frame side (floor side) of the connector shown in the view A, and are difficult to see. Claw Base frame (floor) side Mar. 1999 © TOSHIBA TEC 2 - 37 6570/5570 OUTLINE...
Page 47 PC board and the 2 screws, and drive out the system electrics unit. (9) Remove the 6 screws, and draw out the sys- tem PC board in the direction of the arrow from the mother PC board. 6570/5570 OUTLINE 2 - 38 Mar. 1999 © TOSHIBA TEC...
Page 48 (1) Remove the upper exit cover. (2) Remove the system electronics slot cover (15 screws). (3) Remove the screw and connector, and take out the HDD unit. (4) Remove the bracket (4 screws). Mar. 1999 © TOSHIBA TEC 2 - 39 6570/5570 OUTLINE...
Page 49 – of the photosensitive drum and forms a visible image. Discharger LED array: Discharges any remain- charge from the drum. – Mar. 2000 © TOSHIBA TEC 3 - 1A 8070/6570/5570/4580 COPYING PROCESS...
Page 50: Details Of Copying Process
Discharge transformer the Discharge Transformer ultimately deter- mines the voltage potential on the drum sur- face. (See illustration) 8070/6570/5570/4580 COPYING PROCESS 8070/6570/5570/4580 COPYING PROCESS 3 - 2A 3 - 2 Mar. 2000 © TOSHIBA TEC Mar. 2000 © TOSHIBA TEC...
Page 51 This action produces an electrostatic latent Polygonal mirror image on the surface of the drum. Semiconductor laser Photo- sensitive drum Mar. 1999 © TOSHIBA TEC 3 - 3 6570/5570 COPYING PROCESS...
Page 52 Mixing and agitating the carrier material dur- [Toner] [Carrier] ing the mixing process produces electrostatic charge of the material. This action produces a plus polarity (positive charge) on the car- 6570/5570 COPYING PROCESS 3 - 4 Mar. 1999 © TOSHIBA TEC...
Page 53 The developer material con- tacts the drum forming a brush. Drum This is caused by the lines of magnetic force between the South and North poles. Magnetic roller Mar. 1999 © TOSHIBA TEC 3 - 5 6570/5570 COPYING PROCESS...
Page 54 Paper ration claw mechanically separates any copy movement paper which fails to be separated. Transfer belt 6570/5570 COPYING PROCESS 3 - 6 Mar. 1999 © TOSHIBA TEC...
Page 55 Rotation of drum (The flicker scrapes off toner from the brush.) Fur brush (2) Residual toner on the drum is scraped off. The drum surface is cleaned. Flicker Recovery blade Mar. 1999 © TOSHIBA TEC 3 - 7 6570/5570 COPYING PROCESS...
Page 56 The drum becomes a conductor and all residual charges will be grounded. Drum All electrostatic charges are removed at this time. The drum therefore is prepared to take on a new charge. 6570/5570 COPYING PROCESS 3 - 8 Mar. 1999 © TOSHIBA TEC...
Page 57 LED (red) 10. Discharge (*) Digital copiers of the 8070/6570/5570 have a maintenance of image quality, so the values of Drum surface potential and Developer bias are changed in response to the image quality based on the adjustment value. This maintenance of image quality is applied from the first production of the 8070/6570/5570.
Page 58 (upper/lower roller independent temperature control) 15. Control Microcomputer control 16. Drive system Separated independent drive by DC motor 8070/6570/5570/4580 COPYING PROCESS 8070/6570/5570/4580 COPYING PROCESS 3 - 10A 3 - 4A Mar. 2000 © TOSHIBA TEC Mar. 2000 © TOSHIBA TEC...
Page 59: Carriage 1
~ A patch is formed on the drum, and the reflectivity of this patch is read so that the optimum conditions are set. • This operation stops after 2 minutes of operation. Mar. 1999 © TOSHIBA TEC 4 - 1 6570/5570 COPIER OPERATION...
Page 60 • The scanning motor is turned OFF. • The exposure lamp is turned OFF. • The aligning motor is turned OFF (after the trailing edge of the paper exits the aligning roller). 6570/5570 COPIER OPERATION 4 - 2 Mar. 1999 © TOSHIBA TEC...
Page 61 • Operation of the drum, transfer belt, fuser unit and developer unit stops. The fans return to standby mode rotation. • The copier displays “READY” and enters the standby mode. Mar. 1999 © TOSHIBA TEC 4 - 3 6570/5570 COPIER OPERATION...
Page 62 • When the INTERRUPT key is pressed again, the interrupt lamp goes OFF and the copier returns to the conditions before the interruption. • “READY TO RESUME JOB 1” is displayed. (4) The START key is pressed. The copying operation before the interruption is resumed. 6570/5570 COPIER OPERATION 4 - 4 Mar. 1999 © TOSHIBA TEC...
Page 63  ↓  there is no paper in the cassette: Signal sent to control circuit. ↓ The ADD PAPER display will flash. ↓ *The START key will not function. Mar. 1999 © TOSHIBA TEC 4 - 5 6570/5570 COPIER OPERATION...
Page 64 • During copying, when the empty switch goes OFF despite the tray-up switch being ON ↓ It is determined there is no paper. ↓ The add paper indication blinks. ↓ Copying stops. 6570/5570 COPIER OPERATION 4 - 6 Mar. 1999 © TOSHIBA TEC...
Page 65 * When the exit switch has not come ON after 1.144 seconds have elapsed. Exit switch ↓ The CLEAR PAPER symbol (E01) appears Timer 1.144sec and copying will stop. CLEAR PAPER (E01) Mar. 1999 © TOSHIBA TEC 4 - 7 6570/5570 COPIER OPERATION...
Page 66 After the feed clutch is turned ON, if paper stop switch does not come ON within a fixed time ↓ Paper misfeeding (E15,16,17,19: The error code is different according to the cassette used.) 6570/5570 COPIER OPERATION 4 - 8 Mar. 1999 © TOSHIBA TEC...
Page 67 If the CLEAR/STOP key and the “8” key are pressed simultaneously when the CALL SERVICE symbol is flashing, one of the error codes will appear on the message display. For the contents of the error codes, refer to the “SERVICE HANDBOOK”. Mar. 1999 © TOSHIBA TEC 4 - 9 6570/5570 COPIER OPERATION...
Page 68 Main switch ON DC power ON Restart Cover open? Heater lamp ON Start of initialization • SCN-MTR • DCM-MTR • STOP-MTR • GUIDE-MTR P-STP-SW EXIT-SW ADU-JAM-SW “E03” Paper jam 6570/5570 COPIER OPERATION 4 - 10 Mar. 1999 © TOSHIBA TEC...
Page 69 Heat roller pre-running sufficient for fixing? Pre-running OFF Thermistor Heater Polygon motor broken? broken? Heat roller at ready temperature? Service call Service call Service call “C41” “C44” “CA1” READY Mar. 1999 © TOSHIBA TEC 4 - 11 6570/5570 COPIER OPERATION...
Page 70 “CA2” Number of remaining Carriage stops. copies=0? Number of remaining End of optical copies=0? system control Exit switch Paper jam check 1? Laser OFF “E01” Process control end 6570/5570 COPIER OPERATION 4 - 12 Mar. 1999 © TOSHIBA TEC...
Page 71 2? “E02” Main charger OFF Discharge lamp OFF Developer bias OFF Drum motor OFF Transfer belt motor OFF Fuser motor OFF Developer motor OFF Drum rotation reversed Standby Mar. 1999 © TOSHIBA TEC 4 - 13 6570/5570 COPIER OPERATION...
Page 72: Detailed Drawing Of The Control Panel And The Display Panel
LCD panel. FUNCTION CLEAR HELP COPY STOP ENERGY SAVER TIMER START PRINTER INTERRUPT CLEAR Arrangement of the control panel LCD panel indicating operator’s attention Mar. 1999 © TOSHIBA TEC 5 - 1 6570/5570 DISPLAY UNIT...
Page 73: Items Shown On The Display Panel
ADF. • Press the START key to clear. Timer OFF • No message is displayed in the display panel. • Timer LED is turned ON. Fig. 5.2-1 6570/5570 DISPLAY UNIT 5 - 2 Mar. 1999 © TOSHIBA TEC...
Page 74 • Indicated when the toner bag is Released after the toner bag is full. D in Fig. 5.2-2. replaced and the toner bag cover is The copier stops. closed. Fig. 5.2-2 Mar. 1999 © TOSHIBA TEC 5 - 3 6570/5570 DISPLAY UNIT...
Page 75 Indicates when paper is jammed Press the HELP/INFO key and remove DUPLEXER in the ADU section. the paper jammed in the copier by F in Fig. 5.2-3. following the message. Fig. 5.2-3 6570/5570 DISPLAY UNIT 5 - 4 Mar. 1999 © TOSHIBA TEC...
Page 76 Indication of PM cycle. Maintenance and inspection by a • Indicated when it is time for MAINTENANCE qualified service technician. periodic maintenance and inspec- tion. • Capable of copying. Fig. 5.2-4 Mar. 1999 © TOSHIBA TEC 5 - 5 6570/5570 DISPLAY UNIT...
Page 77 5.3 Relation between Copier Conditions and Operator’s Actions 6570/5570 DISPLAY UNIT 5 - 6 Mar. 1999 © TOSHIBA TEC...
Page 78 It includes a driver LSI, frame, print board, and lateral CFL backlighting. *STN:Super Twisted Nematic (2) Block diagram XSCL LCDEN LCD PANEL 320 x 240 DOTS power supply Mar. 1999 © TOSHIBA TEC 5 - 7 6570/5570 DISPLAY UNIT...
Page 79 IC41, and outputs the data to the LCD. KEY CPU Key switches touch panel PWA-F-DSP-300 (4) Data Transmission Method 1/tF 1/tF FRAME LOAD FRAME LOAD CP x(320/4) pulses D0-D3 6570/5570 DISPLAY UNIT 5 - 8 Mar. 1999 © TOSHIBA TEC...
Page 80 1 The transistor (Q2 or Q3) connected to the LED anode is ON. 2 The output connected to the cathode of that LED is “L”. The LED comes ON when 1 and 2 above are satisfied. Mar. 1999 © TOSHIBA TEC 5 - 9 6570/5570 DISPLAY UNIT...
Page 81 (10) Remove the 4 screws and bracket. (11) Remove the 8 screws and LCD board. (12) Remove the 9 screws and KEY board. (13) Remove the 4 screws and LCD. LCD board KEY board 6570/5570 DISPLAY UNIT 5 - 10 Mar. 1999 © TOSHIBA TEC...
Page 82: Image Processing
High quality image processing, image memory editing, editing SLG board processing, gamma correction, tone processing, external output (PWA-F-SLG-300) system interface Smoothing processing, external input system interface, image area PLG board control, laser related control (PWA-F-PLG-300) Mar. 1999 © TOSHIBA TEC 6 - 1 6570/5570 IMAGE PROCESSING...
Page 83 (2) Image processing circuit on the PLG board One image processing ASIC is mounted on the PLG board and implements the following functions: <Functions> Smoothing processing, external input system interface, image area control, laser related control 6570/5570 IMAGE PROCESSING 6 - 2 Mar. 1999 © TOSHIBA TEC...
Page 84 Smoothing processing External input system interface Image area control Laser related control Laser drlve board : Image data flow (PWA-F-LDR-300) Laser drive Fig. A. Construction of the image processing section Mar. 1999 © TOSHIBA TEC 6 - 3 6570/5570 IMAGE PROCESSING...
Page 85 (such as appear in newspapers), it reduces the background density. <Example> Dynamic range width Extended dynamic range width After range correction Back- ground Text Density Density Lower Higher Lower Higher Histogram 6570/5570 IMAGE PROCESSING 6 - 4 Mar. 1999 © TOSHIBA TEC...
Page 86 (See illustration below) Solid black area Low contrast area Original Image signal After correction Mar. 1999 © TOSHIBA TEC 6 - 5 6570/5570 IMAGE PROCESSING...
Page 87 Using the rectangular area signal, the image data inside the rectangular area are erased with other image signals left. (c) Negative/positive reversal This function reverses image data from negative to positive or vice versa on the entire area. 6570/5570 IMAGE PROCESSING 6 - 6 Mar. 1999 © TOSHIBA TEC...
Page 88 This function works to process tone so that faithful reproduction of halftone images such as photo- graphs are accomplished. (6) External output system interface This function performs the output control of the output interface for the SYS board (PWA-F-SYS- 300). Mar. 1999 © TOSHIBA TEC 6 - 7 6570/5570 IMAGE PROCESSING...
Page 89 This function works to set the effective image area of four directions of output image. (4) Laser related control This function works to control the DAPC (Double Auto Power Control) and to adjust the multiple laser beam position. 6570/5570 IMAGE PROCESSING 6 - 8 Mar. 1999 © TOSHIBA TEC...
Page 90 (HSYNC) block synchronized with the signal. (3) Laser drive block ..........• ON/OFF control of the semiconductor laser and DAPC (Double Auto Power Control) control. Mar. 1999 © TOSHIBA TEC 6 - 9 6570/5570 IMAGE PROCESSING...
Page 91: Reflector
Digital signals are then sent to the printer section of image process- ing. Exposure lamp CCD drive PC board Original glass Rail for CRG-2 Reflector CRG-1 Rail for CRG-1 Lens Drive pulley CCD sensor CRG-2 Scanner control PC board (SLG board) Mar. 1999 © TOSHIBA TEC 7 - 1 6570/5570 SCANNER...
Page 92: Thermostat
Mirror 1 is for guiding light reflected from the original to mirror 2. Mirror 2 is described later on. d. Thermostat It is a temperature-control device that prevents over-heating of the exposure lamp’s assembly. 6570/5570 SCANNER 7 - 2 Mar. 1999 © TOSHIBA TEC...
Page 93: Ccd Drive Pc Board
(5) CCD drive PC board The Image processing board performs image correction preprocessing (amplification, mixing, A/D conversion and shading correction of electrical signals obtained by the CCD). CCD drive PC board Mar. 1999 © TOSHIBA TEC 7 - 3 6570/5570 SCANNER...
Page 94 The original width indicator unit is for indicating the original width currently selected by the copier. The original size is displayed by the yellow lines on the indicator and carriage 1. Original indicator unit Carriage 1 Copiable width Copiable length 6570/5570 SCANNER 7 - 4 Mar. 1999 © TOSHIBA TEC...
Page 95 7.3.3 Optical fan motor The optical fan motors rotate to cool the optical unit during copying and stop rotation during standby. Mar. 1999 © TOSHIBA TEC 7 - 5 6570/5570 SCANNER...
Page 96 Stator A phase (blue) B phase (white) (green) C phase (brown) (gray) Rotor D phase (black) (purple) E phase (orange) (yellow) (red) Fig. 7.4-1 Structure of 5-phase Stepping Motor 6570/5570 SCANNER 7 - 6 Mar. 1999 © TOSHIBA TEC...
Page 97 10th of the rotor tooth pitch at a time. τ × = 0.72° ...... (1) A Phase Phase Phase Phase Phase Phase Phase Phase Phase Phase Fig. 7.4-3 Movement of Poles at 1-phase Excitation Mar. 1999 © TOSHIBA TEC 7 - 7 6570/5570 SCANNER...
Page 98 The current flowing to the motor passes through the current detection resistor R2 as it is as the total current. The total current and the CPU set current value are compared by IC5. IC5 controls the motor drive power. 6570/5570 SCANNER 7 - 8 Mar. 1999 © TOSHIBA TEC...
Page 99 Shading correction plate Original Exposure lamp Lamp regulator PWA-CCD CCD sensor PWA-CCD/PWA-SLG PWA-SLG Control panel Main CPU Image processing IC37 circuit 7 8 9 Key input Construction of exposure control circuit Mar. 1999 © TOSHIBA TEC 7 - 9 6570/5570 SCANNER...
Page 100 This comprised by the following circuit. The exposure data is converted to PWM signals by the scanner CPU, and output to J9-26 via IC2 from the scanner CPU PWM output terminal. PS-ACC S-CPU J9-26 7407 Lamp regulator 6570/5570 SCANNER 7 - 10 Mar. 1999 © TOSHIBA TEC...
Page 101 (4) The amount of lamp current converted to detection voltage VD by a current detection circuit is com- pared with the smoothing signal VS of PWM1 signal from the logic circuit by a comparison circuit whose difference signal VF is fed back to the oscillator circuit. Mar. 1999 © TOSHIBA TEC 7 - 11 6570/5570 SCANNER...
Page 102 (L) regardless of the drive transistor (T 1) being turned ON/OFF. Relay-SW Thermostat Exposure lamp Capacitor Lamp PWM2 drive (Tr1) EXPO ON/OFF PWA-SLG PWM1 PC: Photo coupler Construction of lamp regulator circuit 6570/5570 SCANNER 7 - 12 Mar. 1999 © TOSHIBA TEC...
Page 103 (S – K) I = k × — — — — — (W – K) where, Coefficient Image data before compensation Black data (in black memory) White data (in white memory) Mar. 1999 © TOSHIBA TEC 7 - 13 6570/5570 SCANNER...
Page 104: Scanner Control Pc Board
(4) are satisfied. (3) Original size detection is performed when the output signals from each sensor are input to the S- CPU (IC7) on the scanner control PC board. 6570/5570 SCANNER 7 - 14 Mar. 1999 © TOSHIBA TEC...
Page 105 [A4 Series] APS-4 A5-R A5-R APS-5 B5-R APS-1 B5-R APS-6 A4-R A4-R APS-2 B4 B5 APS-3 [LT Series] APS-3 ST-R ST-R APS-1 APS-4 LT-R LT-R APS-2 Fig. 7.7-3 Sensor Detection Points Mar. 1999 © TOSHIBA TEC 7 - 15 6570/5570 SCANNER...
Page 106 * Platen SW=ON • Keep the recognized original size (or no original state) just before the platen SW is turned on regard- less the APS sensor output signal. 6570/5570 SCANNER 7 - 16 Mar. 1999 © TOSHIBA TEC...
Page 107 The light emitting diode (LED) is driven by pulses with a period of 130 msec. If a signal which has the same characteristics is received by the phototransistor, an original is determined to be present. Pulse modulation is performed within the reflecting photointerruptor. Mar. 1999 © TOSHIBA TEC 7 - 17 6570/5570 SCANNER...
Page 108 (2) Remove the original width indicator unit. (3) Remove the lens cover (11 screws, 1 connec- tor). [A4 series] Automatic paper-size detector unit [LT series] 6570/5570 SCANNER 7 - 18 Mar. 1999 © TOSHIBA TEC...
Page 109 Do not push the reset pin to reuse a ther- Terminal mostat that has been operated once. Mar. 1999 © TOSHIBA TEC 7 - 19 6570/5570 SCANNER...
Page 110 (1) Disconnect the connector. Scanning motor (2) Remove the 2 screws and stepped screw, then the scanning motor bracket. Screw Connector (3) Remove the 3 screws and then the scanning Scanning motor motor. 6570/5570 SCANNER 7 - 20 Mar. 1999 © TOSHIBA TEC...
Page 111 Carriage 1 Mirror 1 (1) Remove carriage-1. (2) Remove the 2 leaf springs fixing mirror 1. Plate spring Plate spring Mirror 1 Mar. 1999 © TOSHIBA TEC 7 - 21 6570/5570 SCANNER...
Page 112 Then, remove the scanner control PC board (SLG board). (5) Loosen the wire tension bracket, and remove Hook the spring. (6) Remove carriage-2. Note: When assembling carriage-2, adjustment is necessary. Spring Carriage wire 6570/5570 SCANNER 7 - 22 Mar. 1999 © TOSHIBA TEC...
Page 113 Idle pulley Idler pulley Wire windup pulley/motor deceleration pulley 39.75/3GT-Z28 [K] Mirrors 2 and 3 (1) Remove carriage-2. Mirror 2 (2) Remove each of the 2 leaf springs. Mirror 3 Mar. 1999 © TOSHIBA TEC 7 - 23 6570/5570 SCANNER...
Page 114 • Pay attention to the two screws (see above figure) on the rear side (see in the figure A.) (Front side) (Rear side) 2: Also, when handling the unit, take suffi- cient care not to hold the adjustment sec- tion and the lens. 8070/6570/5570/4580 SCANNER 7 - 24 Mar. 2000 © TOSHIBA TEC...
Page 115 3: When installing the lens unit, lens scal- ing adjustment is necessary (Refer to the Service Handbook). Installation standard Setting holes Mar. 2000 © TOSHIBA TEC Mar. 2000 © TOSHIBA TEC 7 - 24- 1 7 - 25 8070/6570/5570/4580 SCANNER...
Page 116: Slg Board Cooling Fan
APS harness from the lens cover to remove the fan. [O] Home switch Claws (1) Remove the 2 claws fastening the home switch mounting section on the base to remove the home switch. Mar. 1999 © TOSHIBA TEC 7 - 25 6570/5570 SCANNER...
Page 117 Reflection mirror HSYNC detection board To the drum [Front side] Slit glass fθ lens [Feed side] (Laser light window) HSYNC detection mirror Fig. 8.1-1 Laser Scanning Overview Mar. 1999 © TOSHIBA TEC 8 - 1 6570/5570 PRINTING...
Page 118 Feed side Rear side Front side PLG PCboard Exit side Fig. 8.1-2 Laser Optical Unit Overview 6570/5570 PRINTING 8 - 2 Mar. 1999 © TOSHIBA TEC...
Page 119 The galvanomirror controls the position of the laser beams in the secondary scanning direction so that optimum pitch (42.3 µm) between the four laser beams can be maintained at all times. Mar. 1999 © TOSHIBA TEC 8 - 3 6570/5570 PRINTING...
Page 120 The transmissivity and reflectivity of each half mirror are designed so that the laser power is the same at the point that the four laser beams are combined. Laser Half mirror 1 Half mirror 2 Half mirror 3 6570/5570 PRINTING 8 - 4 Mar. 1999 © TOSHIBA TEC...
Page 121 Four scans are completed by completion of steps Four scans are carried out on one plane of the polygonal mirror. 32 scans can be carried out with one rotation of the polygonal mirror. Mar. 1999 © TOSHIBA TEC 8 - 5 6570/5570 PRINTING...
Page 122 The primary scanning synchronizing signal is formed by detection of these laser beams. The pitch (42.3 µm) between the four laser beams and the laser beam power are detected on the drum surface. 6570/5570 PRINTING 8 - 6 Mar. 1999 © TOSHIBA TEC...
Page 123 The mirror reflects and guides laser light reflected by the polygonal mirror onto the drum. (9) Slit glass The slit glass is located at the position where the laser beam is output from the laser unit to prevent dust inside the laser unit. Mar. 1999 © TOSHIBA TEC 8 - 7 6570/5570 PRINTING...
Page 124 Alternately, the forward current is decreased when laser power is excessive so that the optical current is constant. Likewise, the bias current is controlled so that it is constant. 6570/5570 PRINTING 8 - 8 Mar. 1999 © TOSHIBA TEC...
Page 125 PLG board. Connector (6) Remove upper exit cover, and open the lower exit cover. (7) Remove the slot cover on the inside of the up- per exit cover (15 screws). Mar. 1999 © TOSHIBA TEC 8 - 9 6570/5570 PRINTING...
Page 126 2. Take care not to dirty the slit glass of the laser unit with fingerprints or other marks. 6570/5570 PRINTING 8 - 10 Mar. 1999 © TOSHIBA TEC...
Page 127 PLG board, and disconnect the connectors at section C (WH- PLG-SNS1-300) and section D (WH-PLG- POL). Note: During this operation, prevent the connec- tor at section A from becoming disconnected. Mar. 1999 © TOSHIBA TEC 8 - 11 6570/5570 PRINTING...
Page 128 This unit feeds paper which is set in the LCF, the cassette or the manual feed tray to the transfer position. The paper feed section is mainly comprises an aligning section, large capacity feeder (LCF) and paper feed pedestal (PFP). Mar. 1999 © TOSHIBA TEC 9 - 1 6570/5570 PAPER FEED SYSTEM...
Page 129 In the control logic section, forward and backward rotation of the motor is controlled (ON and OFF) based on the signals from the microcomputer. Input Output Remarks M(-) M(+) Brake STOP (high impedance) 6570/5570 PAPER FEED SYSTEM 9 - 2 Mar. 1999 © TOSHIBA TEC...
Page 130 QA. Because of Zener diode ZDA, however, the collector voltage is held at the Zener voltage, protecting transistor QA and diode DA. Mar. 1999 © TOSHIBA TEC 9 - 3 6570/5570 PAPER FEED SYSTEM...
Page 131 125<N Paper remaining 500<N 1000 Paper remaining < = < = 250<N Paper remaining 1000<N 2000 Paper remaining < = < = 375<N Paper remaining 2000<N Paper remaining 6570/5570 PAPER FEED SYSTEM 9 - 4 Mar. 1999 © TOSHIBA TEC...
Page 132 : Forward rotation Lower aligning rolle : Backward rotation : Gear TP16 : Timing pulley : Timing belt : Number of teeth TP22 : Pich (mm) Aligning motor TB(Z58/P3) Mar. 1999 © TOSHIBA TEC 9 - 5 6570/5570 PAPER FEED SYSTEM...
Page 133 Aligning roller (L) Then, lift the roller upwards to remove. (5) When replacing the roller, remove the gear and Clip the pin. 6570/5570 PAPER FEED SYSTEM 9 - 6 Mar. 1999 © TOSHIBA TEC...
Page 134 3 screws. Note: When assembling, align the cut surface of the pulley with the one of the shaft. Set screw Aligning motor Flange Pulley Mar. 1999 © TOSHIBA TEC 9 - 7 6570/5570 PAPER FEED SYSTEM...
Page 135 (1) Disconnect the connector on the rear side. Wheel Connector (2) Remove the developer and the cleaner, draw Belt transport unit out the belt transport unit, and then remove the pin bracket (1 screw). 6570/5570 PAPER FEED SYSTEM 9 - 8 Mar. 1999 © TOSHIBA TEC...
Page 136 (3) Slide the aligning unit to the front side and re- move in the direction of the arrow. Note: When installing the aligning unit, prevent the two leaf springs from becoming bent. Mar. 1999 © TOSHIBA TEC 9 - 9 6570/5570 PAPER FEED SYSTEM...
Page 137 This roller is for feeding paper out of the manual feed tray or LCF unit to the feed roller. The manual pickup roller feeds paper vertically. Feed roller This roller is opposite of the separation roller. It is responsible for feeding paper to the aligning roller. 6570/5570 PAPER FEED SYSTEM 9 - 10 Mar. 1999 © TOSHIBA TEC...
Page 138 Paper-feed switch Detects the leading/trailing edge of paper passing through the feed roller. The switch is also used for paper jam detection. Mar. 1999 © TOSHIBA TEC 9 - 11 6570/5570 PAPER FEED SYSTEM...
Page 139 Wire takeup pulley Tray-bottom switch Elevator tray Guide pulley Elevator wire (front side) Wire winding pulley Tray elevation gear Belt Tray motor Rise rotation direction Side pulley (forward direction) 6570/5570 PAPER FEED SYSTEM 9 - 12 Mar. 1999 © TOSHIBA TEC...
Page 140 Feed motor TP20 Notes TP27 : Forward rotation : Backward rotation TP78/G18 TB (Z110/P2) : Gear : Timing pulley : Timing belt : Number of teeth : Pitch (mm) Mar. 1999 © TOSHIBA TEC 9 - 13 6570/5570 PAPER FEED SYSTEM...
Page 141 Note: The other time the motor rotates in the direction to move the tray down is when the TRAY DOWN key is depressed. Opening the door and then closing it allows the motor to energize and raise the tray. 6570/5570 PAPER FEED SYSTEM 9 - 14 Mar. 1999 © TOSHIBA TEC...
Page 142 Pick-up bracket Spring Lever 1 Manual pick-up solenoid Pick-up bracket Manual pick-up roller Manual pick-up roller Pick-up bracket Lever 1 Manual pick-up solenoid Mar. 1999 © TOSHIBA TEC 9 - 15 6570/5570 PAPER FEED SYSTEM...
Page 143 Upper aligning roller switch / tray-up switch Lower aligning roller Paper-stop switch LCF paper-start switch LCF feed roller LCF separation roller LCF pick-up roller LCF (large capacity feeder) 6570/5570 PAPER FEED SYSTEM 9 - 16 Mar. 1999 © TOSHIBA TEC...
Page 144 In multicopying, the next sheet is fed to the paper-start switch by the feed motor and waits. * Forward rotation: clockwise viewed from the rear. ** Backward rotation: counterclockwise viewed from the rear. Mar. 1999 © TOSHIBA TEC 9 - 17 6570/5570 PAPER FEED SYSTEM...
Page 145 ( ) direction by the feed roller while the bottom sheet is sent in the ( ) direction by the separation roller. 6570/5570 PAPER FEED SYSTEM 9 - 18 Mar. 1999 © TOSHIBA TEC...
Page 146 LCF release lever LCF knob (3) Remove the 2 screws each at the front and rear that fasten the LCF unit to the rails. LFC unit Rail(front side) Mar. 1999 © TOSHIBA TEC 9 - 19 6570/5570 PAPER FEED SYSTEM...
Page 147 Wire winding pully flange. Flange Flange (6) Remove the gear claw. You can now disassem- Claw ble the gear and flange, and remove the eleva- tor wire. Clip Clip 6570/5570 PAPER FEED SYSTEM 9 - 20 Mar. 1999 © TOSHIBA TEC...
Page 148 ( Inner groove Outer groove Inner side Inner side Lower side — Outer side Upper side Mar. 1999 © TOSHIBA TEC 9 - 21 6570/5570 PAPER FEED SYSTEM...
Page 149 (4) Remove the screw, the cover bracket and the fast-on terminal. (5) Remove the 2 screws and LCF door switch. Connector (6) Remove the 2 screws and LCF motor switch. 6570/5570 PAPER FEED SYSTEM 9 - 22 Mar. 1999 © TOSHIBA TEC...
Page 150 (2) Remove the handle of front side and guide le- Guide lever ver (1 screw for each). Handle (3) Take off the top screw of link, and then remove the 2 guides (2 screws for each). Guide Mar. 1999 © TOSHIBA TEC 9 - 23 6570/5570 PAPER FEED SYSTEM...
Page 151 Manual feed roller Clip (2) Remove the front paper guide (1 screw). Manual separation roller (3) Remove the clip and draw out the manual sepa- ration roller from the shaft. 6570/5570 PAPER FEED SYSTEM 9 - 24 Mar. 1999 © TOSHIBA TEC...
Page 152 Note: The roller can be drawn out more easily from clutch LCF feed roller the shaft by pressing the pick-up roller up, and pressing the separation roller shaft down. LCF feed roller Built-in spring joint Mar. 1999 © TOSHIBA TEC 9 - 25 6570/5570 PAPER FEED SYSTEM...
Page 153 2. Tighten the screws securely. [R] Manual pick-up solenoid (1) Draw out the LCF unit. (2) Remove the rear paper guide (1 screw). Paper guide 6570/5570 PAPER FEED SYSTEM 9 - 26 Mar. 1999 © TOSHIBA TEC...
Page 154 (1) Open the LCF cover. (2) Disconnect the 2 connectors, and remove the screw to remove the switch bracket. (3) Unhook the 4 claws to remove the switches. Connector Mar. 1999 © TOSHIBA TEC 9 - 27 6570/5570 PAPER FEED SYSTEM...
Page 155 (2) Remove the 2 screws fixing the manual feed tray unit. (3) Bring the width guide towards the outside, and draw out the manual feed tray unit while press- ing the manual pick-up roller down. 6570/5570 PAPER FEED SYSTEM 9 - 28 Mar. 1999 © TOSHIBA TEC...
Page 156 Switch ........ Switches (sensors) detect whether the cassette is inserted, whether there is any paper, the tray height and the movement of paper on the paper feed path. Mar. 1999 © TOSHIBA TEC 9 - 29 6570/5570 PAPER FEED SYSTEM...
Page 158 PRDY signal is set to “H”. If subsequent paper feeding is required, the copier sets the RQF signal to High. This is repeated for the required number of copies. Mar. 1999 © TOSHIBA TEC 9 - 31 6570/5570 PAPER FEED SYSTEM...
Page 159 (9) When copying is complete, the copier sets the CRUN signal to “L”. When the CRUN signal goes to “L”, the PFP turns OFF the pedestal motor (M31) and starts the PFP tray motor (M27), (M28) or (M29) in the CW direction to lower the tray. 6570/5570 PAPER FEED SYSTEM 9 - 32 Mar. 1999 © TOSHIBA TEC...
Page 162 (2) In order to clear the above condition, the cassette must be removed and installed or the power must be switched OFF and ON (It will not be cleared by opening closing the door.). Mar. 1999 © TOSHIBA TEC 9 - 35...
Page 163 Cassette switch OFF? PFP tray motor OFF Tray stops Cassette switch ON? "ADD PAPER" no longer flashing In the copier's CRUN signal "H"? Paper feed standby Standby Door open? 6570/5570 PAPER FEED SYSTEM 9 - 36 Mar. 1999 © TOSHIBA TEC...
Page 164 CRUN signal become "H"? Have 0.3 seconds passed since pedestal motor came ON? Pedestal motor ON PFP tray motor OFF? PRDY signal goes to "H" (READY) Mar. 1999 © TOSHIBA TEC 9 - 37 6570/5570 PAPER FEED SYSTEM...
Page 165 ON? Delay for the aligning period Feed clutch OFF Aligning clutch ON Copier's paper-stop switch ON? Leading edge check time over? Delay for aligning period Aligning clutch OFF 6570/5570 PAPER FEED SYSTEM 9 - 38 Mar. 1999 © TOSHIBA TEC...
Page 166 PFP paper-stop switch OFF? Delay from the trailing edge of paper passing PFP paper-stop switch (PFP paper-stop switch off) until it has cleared the aligning roller. Aligning clutch OFF Mar. 1999 © TOSHIBA TEC 9 - 39 6570/5570 PAPER FEED SYSTEM...
Page 167 PFP tray motor OFF Tray stops 50 msec. delay Have two seconds passed since PFP tray motor CW came ON? Paper feeding standby PFP tray motor OFF Tray stops 6570/5570 PAPER FEED SYSTEM 9 - 40 Mar. 1999 © TOSHIBA TEC...
Page 168 All motors and clutches OFF "CLEAR PAPER" flashing Door open? Door closed? PFP paper-stop switch ON? "CLEAR PAPER" goes OFF Mar. 1999 © TOSHIBA TEC 9 - 41 6570/5570 PAPER FEED SYSTEM...
Page 169 TP20 Middle feed PFP lower feed roller clutch PFP lower TP20 separation Lower aligning clutch roller TP25/G28 TP20 G25 G25 Pedestal motor TP20 G64/TP28/ TP25/G28 Lower feed clutch 6570/5570 PAPER FEED SYSTEM 9 - 42 Mar. 1999 © TOSHIBA TEC...
Page 170 (arrow A). • The gear at the tip of the elevator lever moves in a CCW direction (arrow B), engaging gear 25 which rotates in a CW direction. Mar. 1999 © TOSHIBA TEC 9 - 43 6570/5570 PAPER FEED SYSTEM...
Page 171 ), the spring loosens and gear 15 becomes free. • As gear 15 becomes free, gear 144 is pulled in a CCW direction ( ) by its spring, lowering the elevator. 6570/5570 PAPER FEED SYSTEM 9 - 44 Mar. 1999 © TOSHIBA TEC...
Page 172 CCW direction ), separating the PFP separation roller from the PFP feed roller. Mar. 1999 © TOSHIBA TEC 9 - 45 6570/5570 PAPER FEED SYSTEM...
Page 173 Actuators Pick-up roller Cassette latch Lever arm Front side The cassette switches on the rear side detect whether a cassette is inserted or not. Cassette switch Cassette Actuator 6570/5570 PAPER FEED SYSTEM 9 - 46 Mar. 1999 © TOSHIBA TEC...
Page 174 PFP pick-up roller Pick-up arm Tray hole in the Cassette tray actuator position Actuator Cassette base Fig 9.4-2 In the case where there isn't paper (the acutuator isn't detected) Mar. 1999 © TOSHIBA TEC 9 - 47 6570/5570 PAPER FEED SYSTEM...
Page 175 • Next, the aligning clutch (CL7), (CL8) or (CL9) comes ON and the pedestal motor (M31) drives the PFP aligning roller to transport the paper to the copier. • The paper is aligned again by the copier’s aligning roller and transported to the copy process. 6570/5570 PAPER FEED SYSTEM 9 - 48 Mar. 1999 © TOSHIBA TEC...
Page 176 The PFP aligning roller and PFP paper stop switch are not attached to the lower unit. Mar. 1999 © TOSHIBA TEC 9 - 49 6570/5570 PAPER FEED SYSTEM...
Page 177 Note: When assembling, be sure to keep to the mounting direction of the gear and collar as Bushing shown below. E-ring PFP aligning rollers E-ring E-rings Collar Gear 6570/5570 PAPER FEED SYSTEM 9 - 50 Mar. 1999 © TOSHIBA TEC...
Page 178 (2) Take off the 2 E-rings, gear pin and bushing at the rear of the separation roller shaft. (3) Pull out the separation roller with its shaft to- Stay guide ward the front. fixing screws Pin,E-ring,bushing Separation roller Mar. 1999 © TOSHIBA TEC 9 - 51 6570/5570 PAPER FEED SYSTEM...
Page 179 PFP pick-up roller unit in the direction of arrow , extract the bushing, take off the timing belt from the pulley and then remove the PFP pick- up roller unit. Timing belt Bushing 6570/5570 PAPER FEED SYSTEM 9 - 52 Mar. 1999 © TOSHIBA TEC...
Page 180 PFP upper aligning unit (1) Pull out the LCF unit. (2) Remove the 2 screws and pull the PFP upper aligning unit out to the paper feed side. Mar. 1999 © TOSHIBA TEC 9 - 53 6570/5570 PAPER FEED SYSTEM...
Page 181 (1) Remove the PFP inner cover. (2) Remove the harness from the harness clamp (unnecessary for the upper tray). (3) Disconnect the connector. (4) Remove the motor bracket (3 screws). 6570/5570 PAPER FEED SYSTEM 9 - 54 Mar. 1999 © TOSHIBA TEC...
Page 182 [P] Cassette switch (upper, middle, and lower) (1) Remove the rear cover. (2) Unhook the 2 switch claws from the cassette rail, disconnect the connector, and then remove the cassette switch. Mar. 1999 © TOSHIBA TEC 9 - 55 6570/5570 PAPER FEED SYSTEM...
Page 183 (6) Disconnect the pedestal motor connector. (7) Remove the harness from the 3 harness (Outside) (Inside) clamps. (8) Remove the 8 screws, and draw out the PFP drive unit towards you to remove. 6570/5570 PAPER FEED SYSTEM 9 - 56 Mar. 1999 © TOSHIBA TEC...
Page 184 In this section, the drum-related parts including the drum are described. Construction of the parts is as follows: • Drum • Main charger • Ozone filter unit—Slot exhaust, exhaust fan motor • Discharge LED Mar. 1999 © TOSHIBA TEC 10 - 1 6570/5570 DRUM...
Page 185 “pre-exposure” effect. The cleaning effect neutralizes and eliminates the residual charge on the surface of the photosensitive element while the pre-exposure effect maintains a fixed photosensitive surface potential before the charging process is again initiated. 6570/5570 DRUM 10 - 2 Mar. 1999 © TOSHIBA TEC...
Page 186 (6) Draw out the drum shaft from the front side. (7) Remove the drum by lifting it up. Drum [B] How to replace the drum (1) Remove the drum. (2) Remove the 3 screws. Mar. 1999 © TOSHIBA TEC 10 - 3 6570/5570 DRUM...
Page 187 (4) Draw out the drum upwards. Drum [C] Main charger (1) Remove the middle inner cover. (2) Remove the screw, and draw out the main charger to the front side. 6570/5570 DRUM 10 - 4 Mar. 1999 © TOSHIBA TEC...
Page 188 2. Do not allow the charger wire to be twisted. V-groove 3. Do not touch the charger wire directly with your hands or fingers. Mar. 1999 © TOSHIBA TEC 10 - 5 6570/5570 DRUM...
Page 189 4 to 5 mm when a force of 200g is 200g applied at the mark. Mark Spring balance Mark S = 4 to 5mm Rear side of belt from 200g Timing belt outside of plate bending outer side 6570/5570 DRUM 10 - 6 Mar. 1999 © TOSHIBA TEC...
Page 190 Note: When installing the switch, press in the di- rection of arrow and secure. Also insert the harness into the terminals paying attention to the color, and bend the terminals to an angle of 45°. Switch fixing screw Mar. 1999 © TOSHIBA TEC 10 - 7 6570/5570 DRUM...
Page 191 (3) Remove the ozone filter from its holder. Ozone filter [L] Ozone filter unit (1) Disconnect the 2 connectors, remove the 2 screws, and remove the ozone filter unit. 6570/5570 DRUM 10 - 8 Mar. 1999 © TOSHIBA TEC...
Page 192 [N] Reversal Fan Motor (1) Open the exit door and draw out the ADU unit. (2) Remove the reversal fan motor bracket (2 screws, connector). Connector Mar. 1999 © TOSHIBA TEC 10 - 9 6570/5570 DRUM...
Page 193 (3) Remove the reversal fan motor from the bracket (2 screws). Note: Attach the reversal fan motor in the direc- tion shown in the figure. 6570/5570 DRUM 10 - 10 Mar. 1999 © TOSHIBA TEC...
Page 194 Transfer belt cleaning mechanism Belt transport unit lock/unlock mechanism Lower damp heater unit Copier rear frame Transfer belt drive mechanism Transfer belt contact/release mechanism Belt transport unit simple lock mechanism Mar. 1999 © TOSHIBA TEC 11 - 1 6570/5570 TRANSFER/TRANSPORT UNIT...
Page 195 Transfer belt drive roller Transfer belt cleaning brush Transfer belt Transport guide Recovery auger Lower damp heater cover Transfer belt cleaning blade Lower damp heater Fig. 1 Belt transport unit sectional view 6570/5570 TRANSFER/TRANSPORT UNIT 11 - 2 Mar. 1999 © TOSHIBA TEC...
Page 196 Guides paper that is held in contact by static electricity to the fuser unit. This guide is made of material that prevents electrification caused by friction with the paper. Mar. 1999 © TOSHIBA TEC 11 - 3 6570/5570 TRANSFER/TRANSPORT UNIT...
Page 197 (12) Belt transport unit simple lock mechanism When the belt transport unit is inserted into the copier, this mechanism simply holds the belt trans- port unit before it is locked by rotation of the handle. 6570/5570 TRANSFER/TRANSPORT UNIT 11 - 4 Mar. 1999 © TOSHIBA TEC...
Page 198 (2) Disconnect the transfer belt power supply con- nector, the cleaning brush power supply con- nector and the earth (2 screw). (3) Remove the front clip, and slide the bearing. Mar. 1999 © TOSHIBA TEC 11 - 5 6570/5570 TRANSFER/TRANSPORT UNIT...
Page 199 (1) Rotate the transfer belt support/power supply mechanism inside the transfer belt unit by 90°, and then draw out upwards. (2) Remove the 2 fastening screws from the drive roller support bracket. 6570/5570 TRANSFER/TRANSPORT UNIT 11 - 6 Mar. 1999 © TOSHIBA TEC...
Page 200 4. After assembly, make sure that the power supply roller rotates smoothly, and moves vertically smoothly by the spring. 5. Do not touch the surface of the power supply roller directly with your hands. Mar. 1999 © TOSHIBA TEC 11 - 7 6570/5570 TRANSFER/TRANSPORT UNIT...
Page 201 2. Do not directly touch the blade edge by hand. Also, do not allow hard objects to bump against the blade edge. 8070/6570/5570/4580 TRANSFER/TRANSPORT UNIT 11 - 8 Mar. 2000 © TOSHIBA TEC...
Page 202 PC board) and its mounting direction. 2. Make sure that sensor pins are firmly fit- ted into the bracket holes. 3. Do not forget to re-connect the connec- tors. Mar. 1999 © TOSHIBA TEC 11 - 9 6570/5570 TRANSFER/TRANSPORT UNIT...
Page 203 Notes: 1. When installing the damp heater cover, prevent the harness from becoming nipped. 2. Before installing the lower damp heater unit, check the power voltage. 6570/5570 TRANSFER/TRANSPORT UNIT 11 - 10 Mar. 1999 © TOSHIBA TEC...
Page 204: Toner Hopper
This is the developing process performed in the devel- oper unit. Toner cartrige Toner hopper unit Developer unit Mar. 1999 © TOSHIBA TEC 12 - 1 6570/5570 DEVELOPER UNIT...
Page 205 This paddle supplies stirred developer material to the feed roller, and recovers developer material that has been separated by the lower developer sleeve and returns it to the stirring section. 6570/5570 DEVELOPER UNIT 12 - 2 Mar. 1999 © TOSHIBA TEC...
Page 206 The auto-toner sensor monitor the toner density in the developer material by operating a mag- netic bridge circuit. When the toner density drops, a fixed amount of toner is added from the toner hopper. Mar. 1999 © TOSHIBA TEC 12 - 3 6570/5570 DEVELOPER UNIT...
Page 207: Toner Empty Switch
The left figure above shows the sensor lever lifted by the toner. The right figure above shows the sensor lever down due to lack of toner and the magnetic sensor detecting the toner-empty state. 6570/5570 DEVELOPER UNIT 12 - 4 Mar. 1999 © TOSHIBA TEC...
Page 208 Input gear(G27) Mixer 2 gear (G45) Lower magnetic roller gear (G17) Rear paddle gear (G31) Rear side Transport roller gear(G23) Idle gear (G19) Drum Front paddle gear (G18) Front side Mar. 1999 © TOSHIBA TEC 12 - 5 6570/5570 DEVELOPER UNIT...
Page 209 Copier rear side drive Rear side Lower and upper Idle gear Idle gear Rear side gear Mixer 1 magnetic rollers Mixer 2 Transport Idle gear Front side gear roller Front side 6570/5570 DEVELOPER UNIT 12 - 6 Mar. 1999 © TOSHIBA TEC...
Page 210 V(90 ) U(120 ) W(180 ) 0° 30° 60° 90° 120° 150° 180° 210° 240° 270° 300° 330° 360° Hall element A Hall element B Hall element C Hall voltage Mar. 1999 © TOSHIBA TEC 12 - 7 6570/5570 DEVELOPER UNIT...
Page 211 That is, the FG pulse and reference frequency are controlled to be equal. →The developer motor rotates at a constant speed (Locked range state.). (8) When the DEVON signal changes to “H” level, the developer motor stops. 6570/5570 DEVELOPER UNIT 12 - 8 Mar. 1999 © TOSHIBA TEC...
Page 212 This signal is the motor ON/OFF control signal. When it becomes “L” level, the motor rotates. Signal level of motor circuit Signal “H” level “L” level DEVCK Reference clock (821.2Hz) DEVON Motor OFF Motor ON Mar. 1999 © TOSHIBA TEC 12 - 9 6570/5570 DEVELOPER UNIT...
Page 213 • The current which was flowing in the motor winding flows via the route of diode D1. ~ It decreases at the rate of the time constant determined by the inductance and resistance of the winding. • The motor stops. 6570/5570 DEVELOPER UNIT 12 - 10 Mar. 1999 © TOSHIBA TEC...
Page 214 Toner Toner motor Gate Main array DA converter Control voltage signal Toner-empty switch IC48 IC15 Toner density signal MB88347 IC49 Auto-toner sensor (A04) Developer unit Developer material BC-RAM IC23 Mar. 1999 © TOSHIBA TEC 12 - 11 6570/5570 DEVELOPER UNIT...
Page 215 • DC conversion circuit: Converts the high-frequency output from the detection winding to a DC signal. ↓ Auto-toner output V Magnetic resistance Auto-toner output Detection Drive winding conversion main LGC winding circuit (Developer material) Magnetic circuit 6570/5570 DEVELOPER UNIT 12 - 12 Mar. 1999 © TOSHIBA TEC...
Page 216 Toner in the developer material ......much  →Magnetic resistance: large→detection output: small→auto-toner output V : small • DC voltage corresponding to toner density in the developer material = auto-toner output V Mar. 1999 © TOSHIBA TEC 12 - 13 6570/5570 DEVELOPER UNIT...
Page 217 (1) Remove the developer unit. Top cover (2) Remove the top cover (2 screws). (3) Completely remove the old developer material while rotating the gear on the rear side plate. 6570/5570 DEVELOPER UNIT 12 - 14 Mar. 1999 © TOSHIBA TEC...
Page 218 Note: When installing the top cover, position it Top cover securely on its hooks and be sure not catch the urethane seal. Seat of topcover Urethan seal Mylar of sideframe Mar. 1999 © TOSHIBA TEC 12 - 15 6570/5570 DEVELOPER UNIT...
Page 219 Bias plate from the magnetic roller shaft. Note: Pay attention to the color of the rollers when assembling the upper and lower guide roll- ers. Lower guide roller (Black) E-ring 8070/6570/5570/4580 DEVELOPER UNIT 12 - 16 Mar. 2000 © TOSHIBA TEC...
Page 220 (8) Remove the entire upper and lower roller sub unit from the developer. (9) Remove the 2 pole fixing holders and the 2 E- Pole fixing holder rings on the inside. Mar. 1999 © TOSHIBA TEC 12 - 17 6570/5570 DEVELOPER UNIT...
Page 221 Seal Scraper Seal Transport roller E-ring [E] Transport magnetic roller Gear (1) Remove the upper and lower developer roller sub unit. (2) Remove the front gear and the E-ring. 6570/5570 DEVELOPER UNIT 12 - 18 Mar. 1999 © TOSHIBA TEC...
Page 222 Convex part of sideframe Leveler on the front and rear side frames (2 screws). [G] Auto-toner sensor Auto-toner sensor (1) Remove developer material. (2) Remove the auto-toner sensor (2 screws). Mar. 1999 © TOSHIBA TEC 12 - 19 6570/5570 DEVELOPER UNIT...
Page 223 (5) Remove the 2 oil seals from the nozzle mixer with the C-ring pliers. Nozzle mixer Oil seal (6) After removing the 2 bearings with the C-ring Oil seal pliers, remove the 2 oil seals. Bearing 6570/5570 DEVELOPER UNIT 12 - 20 Mar. 1999 © TOSHIBA TEC...
Page 224 Oil seal (paddle section) (1) Remove the front side plate, rear side plate and nozzle mixer. (2) Remove the E-ring, and then the gear and par- allel pin. E-ring Gear Mar. 1999 © TOSHIBA TEC 12 - 21 6570/5570 DEVELOPER UNIT...
Page 225 (2) Remove each of the oil seals pressure-fitted into the sealed bushes on the front and rear sides. (3) Remove the transport roller. Bottom Oil seal 6570/5570 DEVELOPER UNIT 12 - 22 Mar. 1999 © TOSHIBA TEC...
Page 226 (4) Press the toner hopper unit towards the rear side to release the hooks, and then lift the rear Toner hopper unit side up at an angle to remove. Mar. 1999 © TOSHIBA TEC 12 - 23 6570/5570 DEVELOPER UNIT...
Page 227 (1) Remove the toner hopper unit. (2) Take out the screw, disconnect the connector, and remove the toner-empty switch. Connector [N] Toner-supply cover switch (1) Remove the switch cover (1 screw). Switch cover 6570/5570 DEVELOPER UNIT 12 - 24 Mar. 1999 © TOSHIBA TEC...
Page 228: Toner Transport Auger Unit
(1) Remove the rear cover. (2) Disconnect the developer bias connector and Motor unit remove the duct (2 screws). Developer bias (3) Remove the motor unit (3 screws). connector Duct Mar. 1999 © TOSHIBA TEC 12 - 25 6570/5570 DEVELOPER UNIT...
Page 229 (If there is a clearance between the duct and seals, toner may be blown out and dirty the inside of the copier.) 6570/5570 DEVELOPER UNIT 12 - 26 Mar. 1999 © TOSHIBA TEC...
Page 230 (3) Remove the 2 screws and the panel cover. (4) Draw out the fan. [T] Replacing toner filter (1) Remove the feed cover. (2) Remove the screw and the filter cover. Mar. 1999 © TOSHIBA TEC 12 - 27 6570/5570 DEVELOPER UNIT...
Page 232 Recovery blade Main blade Drum thermistor Drum Weight Fur brush Toner recovery auger Toner adhesion amount sensor Separation claw G17/30 Mar. 1999 © TOSHIBA TEC 13 - 1 6570/5570 CLEANER...
Page 233 To separate paper that could not be separated by the transport belt, the separation claw is pressed against the drum by the separation claw solenoid only when the leading edge of the paper passes through. 6570/5570 CLEANER 13 - 2 Mar. 1999 © TOSHIBA TEC...
Page 234 (9) Fur brush Removes paper dust and foreign matter remaining on the drum surface after separation of the trans- fer paper, reduces blade wear, lengths the blade life, and improves image reliability. Mar. 1999 © TOSHIBA TEC 13 - 3 6570/5570 CLEANER...
Page 235 R3, R2 and R1, amplified and is output from output terminal pin No.8. This output voltage is input to the A/D converter of the microcomputer to control the temperature of the high-voltage transformer for the main charger. 6570/5570 CLEANER 13 - 4 Mar. 1999 © TOSHIBA TEC...
Page 236 This is referred to here as the “toner adhesion amount.” Toner adhesion amount sensor Light source intensity signal Reflected light intensity signal Light emitting element Light sensing element Test pattern (toner image) Photosensitive drum Mar. 1999 © TOSHIBA TEC 13 - 5 6570/5570 CLEANER...
Page 237 [7] End of Control (The determined image formation conditions are reflected in subsequent copies.) When the result is judged as NG (No Good). [6] The image formation conditions are changed. Return to [3] 6570/5570 CLEANER 13 - 6 Mar. 1999 © TOSHIBA TEC...
Page 238 Executes steps [1] to [7] described in 13.4.3. Image Formation Process Photosensitive drum Toner adhesion amount sensor Test pattern Light source Reflected light intensity signal intensity signal Various image formation conditions MCPU Mar. 1999 © TOSHIBA TEC 13 - 7 6570/5570 CLEANER...
Page 239 (2) Remove the top cover (4 screws). (3) Holding the bracket turn the main blade over. (4) Remove the screw. (5) Hold the ends of the 2 screws, remove the main blade. Screw ends 6570/5570 CLEANER 13 - 8 Mar. 1999 © TOSHIBA TEC...
Page 240 (2) Remove the fur brush from the cleaner body. Fur brush [E] Toner adhesion amount sensor (1) Remove the sensor mounting bracket (2 screws). Mar. 2000 © TOSHIBA TEC 13 - 9 8070/6570/5570/4580 CLEANER UNIT...
Page 241 (3) Slide the separation claw unit to the front side to draw it out from the bushing on the rear side, and draw out the unit to the rear. Separation claw unit 8070/6570/5570/4580 CLEANER UNIT 13 - 10 Mar. 2000 © TOSHIBA TEC...
Page 242 The motor can be re- moved as an individual unit. Bracket (4) Remove the toner auger motor (2 screws and bundling band). Toner auger motor Mar. 2000 © TOSHIBA TEC 13 - 11 8070/6570/5570/4580 CLEANER UNIT...
Page 243 Note: During assembly, move the separation claw solenoid in the direction of the arrow, and Solenoid secure. Connector Bunding band [J] Drum motor (1) Remove the flywheel (3 screws). 6570/5570 CLEANER 13 - 12 Mar. 1999 © TOSHIBA TEC...
Page 244 (2) Draw out the toner bag. Toner bag [L] Toner-full detector (1) Remove the toner bag. (2) Disconnect the toner-full detector connector. (3) Remove the screw on the bracket securing the toner-full detector. Toner-full detector Mar. 1999 © TOSHIBA TEC 13 - 13 6570/5570 CLEANER...
Page 245 (2) Disconnect the transport auger motor. [N] Toner transport motor (1) Remove the toner transport motor (2 screws). Note: Adjustment of the main blade, recovery blade and fur brush cleaner unit is not necessary. 6570/5570 CLEANER 13 - 14 Mar. 1999 © TOSHIBA TEC...
Page 246: Fuser Unit
In the temperature sensing section, the temperature of the upper and lower heat rollers is controlled by a thermistor. If the temperature becomes abnormally hot, the power to the heater lamps is cut by a thermostat. Mar. 1999 © TOSHIBA TEC 14 - 1 6570/5570 FUSER UNIT...
Page 247 A cleaning roller 4 is attached so as to contact the lower heat roller to remove the toner and paper scraps that have stuck to the lower heat roller during the fusing process. 6570/5570 FUSER UNIT 14 - 2 Mar. 1999 © TOSHIBA TEC...
Page 248 The thermostat on this copier is for preventing abnor- mal operation. When the thermostat detects an abnormality, the thermostat must be replaced to- gether with the other damaged parts in the fuser. Mar. 1999 © TOSHIBA TEC 14 - 3 6570/5570 FUSER UNIT...
Page 249 (or replaced), if turning ON the power switch does not cause the heater to energize resulting in an error, check the Thermistor status counter (08-code 400) and reset it to “0”. Surface temperature of heat roller: 200°C (Thermistor resistance value: about 0.8 kΩ) 6570/5570 FUSER UNIT 14 - 4 Mar. 1999 © TOSHIBA TEC...
Page 250 240°C, the second thermistor detects this, causing the heater to be turned OFF immediately regardless of the temperature in the paper-contact area. Mar. 1999 © TOSHIBA TEC 14 - 5 6570/5570 FUSER UNIT...
Page 251 Reference (supplement) The following fusing control mode is available only for 8070. • Relationship between the upper heat roller surface temperature and the fusing control mode. Temperature Fusing control status More than 200°C Heater lamp OFF From 170°C to 200°C Lamp ON, normal copying speed From 160°C to 170°C...
Page 253 OFF again. After confirming that an abnormal heater condition has occurred, repair the problem and then clear code 400 of the setting mode with “0”. After that, you can bring the copier into its normal operating condition. 6570/5570 FUSER UNIT 14 - 6 Mar. 1999 © TOSHIBA TEC...
Page 254 (9) During standby, the HTRMOTL level changes to “L” if the temperature of the lower heat roller drops below the reference temperature, and the heat roller motor rotates at low speed. Mar. 1999 © TOSHIBA TEC 14 - 7 6570/5570 FUSER UNIT...
Page 255 ON. Signal level of motor circuit Signal “H” level “L” level HMOT-REF Reference clock (1247.6Hz) HTRMOTL Motor OFF Motor low-speed ON HTRMOT Motor OFF Motor ON 6570/5570 FUSER UNIT 14 - 8 Mar. 1999 © TOSHIBA TEC...
Page 256 (2) Remove the fuser unit guard (3 screws). Rear cover (3) Remove one rear E-ring each. Cleaning roller 1 E-ring Cleaning roller 2 Spring (black) Spring (silver) Rear side Mar. 1999 © TOSHIBA TEC 14 - 9 6570/5570 FUSER UNIT...
Page 257 (5) Remove the thermostat bracket (1 screw). Thermistor connector (6) Remove the thermostat (2 screws). Notes: 1. When assembling, make sure that the thermostat is attached as shown in the figure on the right. 1mm~1.5mm 6570/5570 FUSER UNIT 14 - 10 Mar. 1999 © TOSHIBA TEC...
Page 258 (2) Remove the lower thermistor (1 screw). Lower thermistor Harness cover [E] Upper separation claw (1) Remove the jam release unit (1 screw on the front side). Jam release unit Mar. 1999 © TOSHIBA TEC 14 - 11 6570/5570 FUSER UNIT...
Page 259 [F] Lower separation claw/cleaning roller 4 (1) Remove 1 screw for each from the front and rear sides, and open the lower separation claw unit. Lower separation claw unit 6570/5570 FUSER UNIT 14 - 12 Mar. 1999 © TOSHIBA TEC...
Page 260 Notes: 1. When attaching the 2 heater lamps, make sure that they are attached with the Upper hearter lamp TOSHIBA marks facing the front. TOSHIBA mark Lower hearter lamp Mar. 1999 © TOSHIBA TEC 14 - 13 6570/5570 FUSER UNIT...
Page 261 (6) Remove the 2 front screws and take out the bearing. Handle bracket (7) Remove the timing belt. Stop ring (8) Remove the rear stop ring and take out the pulley. Timing belt Pulley 6570/5570 FUSER UNIT 14 - 14 Mar. 1999 © TOSHIBA TEC...
Page 262 Wind paper onto the lower heat roller in the same way when installing the lower heat roller. Lower heat roller Paper Mar. 1999 © TOSHIBA TEC 14 - 15 6570/5570 FUSER UNIT...
Page 263 Lower inlet guide lower inlet guide on the 2 screws. Stamped mark Exit roller (1) Remove the front and rear stop ring, then re- move the exit roller. Stop ring 6570/5570 FUSER UNIT 14 - 16 Mar. 1999 © TOSHIBA TEC...
Page 264 Connector [K] Heat roller motor (1) Remove the rear cover. (2) Remove the rear side cover. (3) Remove the connector cable bracket (2 screws). Connector cable bracket Mar. 1999 © TOSHIBA TEC 14 - 17 6570/5570 FUSER UNIT...
Page 265 (3) Remove the rear side cover. (4) Remove the connector cable bracket (2 screws). Connector cable bracket (5) Disconnect the motor connector. Connector 6570/5570 FUSER UNIT 14 - 18 Mar. 1999 © TOSHIBA TEC...
Page 266 2 screws to remove the SSR. Note: Wiring is as follows. Thin wire Blue White Black Yellow Yellow connector Transparent connector Blue White Blue White Thick wire Mar. 1999 © TOSHIBA TEC 14 - 19 6570/5570 FUSER UNIT...
Page 267: Transport Roller
(6) Transport section This section comprises a transport roller and transport guide for guiding re-fed paper to the feed section on this copier. Mar. 1999 © TOSHIBA TEC Mar. 1999 © TOSHIBA TEC 15 - 1A 15 - 1...
Page 268: Drum
Drum ADU/exit switching gate Aligning roller Fuser Exit roller ADU inlet/reversal roller Separation belt Stack section Holding gate Aligning roller Transport roller Transport guide Pick-up roller Feed roller 8070/6570/5570/4580 ADU 15 - 2A Mar. 1999 © TOSHIBA TEC...
Page 269 When the gate solenoid turns OFF, the arm returns to its original position (arrow by spring force, and the copied paper is out- put. Mar. 1999 © TOSHIBA TEC Mar. 1999 © TOSHIBA TEC Mar. 1999 © TOSHIBA TEC 15 - 3A...
Page 270 When the reverse rotation clutch turns ON, the in- Inlet/reversal roller let roller rotates in the direction (reverse direction) for turning the paper over. Forward rotation clutch Inlet roller Forward rotation Input gear clutch Reverse rotation clutch 8070/6570/5570/4580 ADU 15 - 4A Mar. 1999 © TOSHIBA TEC...
Page 271 ADU transport roller drive Trasport roller When the ADU transport clutch is turn ON, the ADU transport roller rotates. Trasport clutch Mar. 1999 © TOSHIBA TEC Mar. 1999 © TOSHIBA TEC 15 - 5A 15 - 5 8070/6570/5570/4580 ADU 8070/6570/5570/4580 ADU...
Page 272 Each time that five sheets of paper are stacked continuously during stacking, the side guides align the sides of the paper. The ADU empty switch is for detecting whether or not paper is on the stack section. 8070/6570/5570/4580 ADU 15 - 6A Mar. 1999 © TOSHIBA TEC...
Page 273 The paper on the stack section is fed successively from the bottom side. This operation is repeated until all stacked paper is copied. Mar. 1999 © TOSHIBA TEC 15 - 7A 8070/6570/5570/4580 ADU...
Page 274 3) The ADU position detection switch 1 and ADU position detection switch 2 switch detect the leading and trailing edges of the paper passing through the ADU transport roller. They are also used for detecting paper jams. 8070/6570/5570/4580 ADU Mar. 1999 © TOSHIBA TEC 15 - 8A 15 - 8 Mar. 1999 © TOSHIBA TEC...
Page 275 1) The reversal switch detects the leading and trailing edges of the paper passing through the reversal gate. It is also used for detecting paper jams. Mar. 1999 © TOSHIBA TEC 15 - 9A 8070/6570/5570/4580 ADU...
Page 276 (1) Remove the 2 screws fixing the ADU feed cover. [B] Stack guide unit (1) Remove the 6 screws fixing the stack guide unit. (2) Disconnect the connector. (3) Remove the stack guide unit. Connector 8070/6570/5570/4580 ADU 15 - 10A Mar. 1999 © TOSHIBA TEC...
Page 277 (3) Disconnect the connector, and release the switch claw from the bracket to remove the position detection switch 1. Mar. 1999 © TOSHIBA TEC Mar. 1999 © TOSHIBA TEC 15 - 11A 15 - 11 8070/6570/5570/4580 ADU...
Page 278 (5) Remove the set screw fixing the transport clutch and disconnect the connector. Then remove the transport clutch. 8070/6570/5570/4580 ADU 15 - 12A Mar. 1999 © TOSHIBA TEC...
Page 279 [K] Transport switch 2 (1) Turn the ADU unit cover. (2) Disconnect the connector, and release the switch claw from the bracket to remove trans- port switch 2. Mar. 1999 © TOSHIBA TEC 15 - 13A 8070/6570/5570/4580 ADU...
Page 280 (3) Remove the pick-up roller guide unit. (4) Remove the ADU drive unit. (5) Remove the transport clutch guide. (6) Remove the front E-ring and bush. 8070/6570/5570/4580 ADU Mar. 1999 © TOSHIBA TEC 15 - 14A 15 - 14 Mar. 1999 © TOSHIBA TEC 8070/6570/5570/4580 ADU...
Page 281 (2) Remove the stack guide unit. (3) Remove the pick-up roller guide unit. (4) Remove the ADU drive unit. (5) Remove the transport clutch guide. (6) Remove the front E-ring and bearing. Mar. 1999 © TOSHIBA TEC 15 - 15 6570/5570 ADU...
Page 282 Feed switch [Q] Aligning switch Aligning switch (1) Remove the ADU feed cover. (2) Disconnect the connector, and release the switch claw from the bracket to remove the aligning switch. 6570/5570 ADU 15 - 16 Mar. 1999 © TOSHIBA TEC...
Page 283 [S] Forward rotation clutch and reverse rotation clutch (1) Remove the ADU feed unit. (2) Remove the 2 E-rings, 2 screws and then the feed drive unit. Mar. 1999 © TOSHIBA TEC Mar. 1999 © TOSHIBA TEC 15 - 15A 15 - 17A 8070/6570/5570/4580 ADU...
Page 284 (2) Remove the feed drive unit. (3) Remove the screw fixing the holding gate sole- noid to remove the holding gate solenoid. 8070/6570/5570/4580 ADU 8070/6570/5570/4580 ADU 15 - 16A 15 - 18 Mar. 1999 © TOSHIBA TEC Mar. 1999 © TOSHIBA TEC...
Page 285 (9) Remove the front E-ring, and take out the bush. (10) Remove the rear E-ring, and take out the bush. Spring E-ring Mar. 1999 © TOSHIBA TEC Mar. 1999 © TOSHIBA TEC 15 - 17A 15 - 19A 8070/6570/5570/4580 ADU...
Page 286 Remove the 2 E-rings, and remove the E-ring E-ring drop roller. Separation belt roller E-ring Bush 8070/6570/5570/4580 ADU Mar. 1999 © TOSHIBA TEC 8070/6570/5570/4580 ADU 15 - 18A 15 - 19A 15 - 20A Mar. 1999 © TOSHIBA TEC Mar. 1999 © TOSHIBA TEC 8070/6570/5570/4580 ADU...
Page 287 (7) Draw out arm R to the rear side. Note: For reassembling, refer to the service hand- book 1.15.2 “Holding gate position adjust- ment”. Arm R Mar. 1999 © TOSHIBA TEC Mar. 1999 © TOSHIBA TEC 15 - 19A 15 - 21A 8070/6570/5570/4580 ADU...
Page 288 (3) Remove the rear clip and bush. Clip (4) Slide the ADU/exit switching gate to the front and remove it. Gate 8070/6570/5570/4580 ADU 8070/6570/5570/4580 ADU 15 - 20A 15 - 22A Mar. 1999 © TOSHIBA TEC Mar. 1999 © TOSHIBA TEC...
Page 289 (3) Slide the exit roller to the rear and remove the bearing from the frame, and then take out the exit roller. Exit roller Mar. 1999 © TOSHIBA TEC Mar. 1999 © TOSHIBA TEC 15 - 21A 15 - 23...
Page 290 Connector Color Harness Color Connector Color Harness Color Black Black Black Black Harness for reverse clutch White White Black Black Harness for forward clutch White Brown White Black Harness for solenoid 8070/6570/5570/4580 ADU 15 - 24 Mar. 2000 © TOSHIBA TEC...
Page 291 (3) Remove the 3 screws fixing the drive motor bracket and then the drive motor bracket. (4) Remove the 2 screws fixing the ADU drive motor and then the ADU drive motor. Mar. 1999 © TOSHIBA TEC 15 - 25 6570/5570 ADU...
Page 292 Original feeding Pick-up roller tray Exit roller Separation pad Exit from ADF Flapper Reverse roller Aligning roller Original stopper Original glass Sent onto the original glass for duplex copying Feed roller Mar. 1999 © TOSHIBA TEC 16 - 1 6570/5570 ADF...
Page 293 • ADF reverse motor • ADF reverse roller • ADF reverse solenoide • ADF reverse flapper • Exit sensor • ADF exit roller • ADF exit cover sensor Control section • PC board 6570/5570 ADF 16 - 2 Mar. 1999 © TOSHIBA TEC...
Page 294 III. The solenoid turns ON when transport of the second original is restarted after the first original is exited and transport of the second original is stopped on the glass. Mar. 1999 © TOSHIBA TEC 16 - 3 6570/5570 ADF...
Page 295 Transport motor Feed motor Lock Pick-up roller stops. Feed roller stops. Aligning roller rotates CCW. Weight goes up. Transport belt rotates CCW. Exit roller rotates CCW. Reverse roller rotates CCW. 6570/5570 ADF 16 - 4 Mar. 1999 © TOSHIBA TEC...
Page 296 After the alignment sensor detects the leading edge of the original, the original is transported for a specified number of pulses, and the leading edge of the original arrives and is aligned at the aligning roller. The feed motor then stops. Mar. 1999 © TOSHIBA TEC 16 - 5 6570/5570 ADF...
Page 297 If the original is a non-standard size, or the original size differs from that of the previously fed original, the original size data is sent to the copier. 6570/5570 ADF 16 - 6 Mar. 1999 © TOSHIBA TEC...
Page 298 At the point when the original arrives at the exposure position, the feed motor stops, the original is set at the exposure position, and feed is completed. Mar. 1999 © TOSHIBA TEC 16 - 7 6570/5570 ADF...
Page 299 If there is an original on the tray when feed is completed, initial alignment of the next original is started. * This operation is repeated until all originals on the tray are fed. 6570/5570 ADF 16 - 8 Mar. 1999 © TOSHIBA TEC...
Page 300 (11) Turn guide sensor OFF At the point when the exit sensor turns OFF, the number of pulses up to reversal motor stop is set. Mar. 1999 © TOSHIBA TEC 16 - 9 6570/5570 ADF...
Page 301 DF have been output, the transport motor and reversal motor stop, exit is completed, the DF operation in progress signal is reset, and feed operation is completed. * During step feed, 2 originals are output continuously. 6570/5570 ADF 16 - 10 Mar. 1999 © TOSHIBA TEC...
Page 302 The feed motor then stops. At the same time, the transport motor and reversal motor start to operate in the forward direction to rotate the transport belt and reversal roller and start the dummy exit operation. Mar. 1999 © TOSHIBA TEC 16 - 11 6570/5570 ADF...
Page 303 If the original is a non-standard size, or the original size differs from that of the previously fed original, the original size data is sent to the copier. 6570/5570 ADF 16 - 12 Mar. 1999 © TOSHIBA TEC...
Page 304 At the point where the leading edge of the original is nipped by the reversal roller lower passage roller by a specified amount or more, the transport motor and the reversal motor stop. Mar. 1999 © TOSHIBA TEC 16 - 13...
Page 305 The original is stopped in contact with the original stopper, and the rear side of the origi- nal is set. 6570/5570 ADF 16 - 14 Mar. 1999 © TOSHIBA TEC...
Page 306 At the point when the trailing edge of the original has passed the reversal flapper, the flapper solenoid turns OFF, and the reversal flapper is switched to the exit side. Mar. 1999 © TOSHIBA TEC 16 - 15...
Page 307 In the same way as (4), the original size is detected at the point when the trailing edge of the original has passed the aligning sensor. 6570/5570 ADF 16 - 16 Mar. 1999 © TOSHIBA TEC...
Page 308 (16) Completion of exit At the point when the original is completely output onto the exit tray, the reversal motor stops, and exit is completed. Mar. 1999 © TOSHIBA TEC 16 - 17 6570/5570 ADF...
Page 309 The original is stopped in contact with the original stopper, and the rear side of the original is set. 6570/5570 ADF 16 - 18 Mar. 1999 © TOSHIBA TEC...
Page 310 DF have been output, the transport motor and reversal motor stop, exit is completed, the DF operation in progress signal is reset, and feed operation is completed. Mar. 1999 © TOSHIBA TEC 16 - 19...
Page 311 Data communications (RXD, TXD) between the copier and the ADF is carried out by serial communica- tions. So, you cannot check whether or not signals are being sent or received correctly in the field using a multimeter. COPIER DF-ACK DF-REQ 6570/5570 ADF 16 - 20 Mar. 1999 © TOSHIBA TEC...
Page 312 (personal check) is being fed by normal feed in the one-sided mode is set as the jam pulse. This is set at the point when the trailing edge of the output original has passed the exit sensor in the one-sided mode. Mar. 1999 © TOSHIBA TEC 16 - 21 6570/5570 ADF...
Page 313 For this reason, when the exit sensor turns ON at completion of double-sided feed, the exit sensor accumulation jam is judged. This method is adopted to detect jams. 6570/5570 ADF 16 - 22 Mar. 1999 © TOSHIBA TEC...
Page 314 Passage of the trailing edge of the fed original through the aligning sensor The number drive pulses output by the feed motor between is counted to detect the size of the original in the feed direction. Mar. 1999 © TOSHIBA TEC 16 - 23 6570/5570 ADF...
Page 315 E2PROM control Initialization over? Status change Initialization processing monitoring Operating status monitoring Operation control Jam processing Communications control ADF unit test mode? ADF unit test mode control General-purpose timer set processing 6570/5570 ADF 16 - 24 Mar. 1999 © TOSHIBA TEC...
Page 316 Operation control Operation control Initial alignment One-side feed control No.1 double-sided transport control No.2 double-sided transport control Double-sided reversal control Eject control Dummy exit control Weight plate initialization control RETURN Mar. 1999 © TOSHIBA TEC 16 - 25 6570/5570 ADF...
Page 317 Jam pulse cleared Feed motor OFF? Setting of feed motor deceler- ation request by aligning sensor ON interrupt (deceler- ation started after specified pulse drive) Feed motor OFF? Initial alignment END 6570/5570 ADF 16 - 26 Mar. 1999 © TOSHIBA TEC...
Page 318 OFF? Setting of transport motor deceleration request by timing sensor OFF interrupt (deceleration started after specified pulse drive) Feed motor and transport motor stopped? One-sided feed control END Mar. 1999 © TOSHIBA TEC 16 - 27 6570/5570 ADF...
Page 319 Jam pulse cleared Setting of transport motor/ Feed motor reversal motor deceleration deceleration started request by exit sensor ON interrupt Transport motor and reversal motor stopped? No.1 double-sided transport END 6570/5570 ADF 16 - 28 Mar. 1999 © TOSHIBA TEC...
Page 320 Setting of transport motor/ reversal motor deceleration start request by exit sensor ON interrupt (deceleration started after specified pulse drive) Transport motor and reversal motor stopped? No.2 double-sided transport END Mar. 1999 © TOSHIBA TEC 16 - 29 6570/5570 ADF...
Page 321 OFF Flapper solenoid OFF at pulse count up (switchover to exit direction) Transport motor and reversal motor stopped? All motors stopped? Double-sided reversal control END 6570/5570 ADF 16 - 30 Mar. 1999 © TOSHIBA TEC...
Page 322 Setting of jam pulse from sensor OFF (deceleration exit sensor ON to reversal started after specified sensor OFF pulse drive) Reversal motor stopped? Exit control END Mar. 1999 © TOSHIBA TEC 16 - 31 6570/5570 ADF...
Page 323 Next original on tray? One-sided feed started Double-sided reversal started Initial alignment started Exit started Double- Initial alignment sided reversal One-sided completed? completed? feed completed? Exit completed? 6570/5570 ADF 16 - 32 Mar. 1999 © TOSHIBA TEC...
Page 324 Double- sided reversal completed? Exit completed? Exit started One-sided feed started Exit completed? One-sided feed completed? Next original on tray? Initial alignment started Initial alignment completed? Exit completed ? RETURN Mar. 1999 © TOSHIBA TEC 16 - 33 6570/5570 ADF...
Page 325: Timing Charts
16.8 Timing Charts 16.8.1 A4, 3 sheets, one-sided mode 6570/5570 ADF 16 - 34 Mar. 1999 © TOSHIBA TEC...
Page 329 Detects open/close of the feed section Reed switch (paper feed cover switch) RCOVER RCOVER-SW Detects open/close in the exit/reversal section Reed switch (exit cover switch) APSSW APS-STR-SW APS start switch Microswitch (APS start switch) 6570/5570 ADF 16 - 38 Mar. 1999 © TOSHIBA TEC...
Page 330: Electrical Parts Layout
FCOVER RCOVER-SW RCOVER DF-OPN-SW EEPROM APSSW APS-STR-SW Driver converter DF-ACK DF-REO Communications circuit Driver RSOL SGND SGND FMOT +24V +5V power DC+24V circuit Driver TMOT Rush current limiting circuit RMOT Mar. 1999 © TOSHIBA TEC 16 - 39 6570/5570 ADF...
Page 331 IC4, R16 and Q7 so that the output voltage of PTr is the required voltage. The D/A output voltage values at this time are values unique to each of the sensor elements, and are stored to non-volatile memory EEPROM (IC11). 6570/5570 ADF 16 - 40 Mar. 1999 © TOSHIBA TEC...
Page 332 R67, R68, R71 and Q13 immediately extracts the load that accumulates in C45 when one of the ADF open/close switch, feed cover switch and exit cover switch becomes open, and limits the inrush current that flows when the cover is opened or closed momentarily. Mar. 1999 © TOSHIBA TEC 16 - 41 6570/5570 ADF...
Page 333 PWM signal. When the solenoid starts to actuate, the solenoid actuates at its maximum torque at 100% duty. After actuation is completed, the duty ratio is reduced to hold actuation while heating of the solenoid is held in check. 6570/5570 ADF 16 - 42 Mar. 1999 © TOSHIBA TEC...
Page 334 If a system error prevents the clock from being input from the CPU, pin 8 of IC3 turns Low, to reset the CPU and stop system operation. Resistor R27 is for stopping the watchdog timer, and is normally not mounted. Mar. 1999 © TOSHIBA TEC 16 - 43 6570/5570 ADF...
Page 335 IC11 is powered by +5V from E2PROM. IC11 power is held by D11, R74 and C42 until writing of data is completed even if something causes the power voltage to fall during writing of data. 6570/5570 ADF 16 - 44 Mar. 1999 © TOSHIBA TEC...
Page 336 This output circuit is for communicating with the copier body. It is “1” at 5V and “0” at 0V. Logic at connector sections and the CPU output port is the same. Mar. 1999 © TOSHIBA TEC 16 - 45 6570/5570 ADF...
Page 337 (connector section voltage 2.5V or more) voltage 2.5V or less) EXITS (exit sensor) No original With original (connection section (connector section voltage 2.5V or more) voltage 2.5V or less) APSSW (APS start switch) ADF open ADF closed 6570/5570 ADF 16 - 46 Mar. 1999 © TOSHIBA TEC...
Page 338 PWM signal. When the solenoid starts to actuate, the solenoid actuates at its maximum torque at 100% duty After actuation is completed, the duty ratio is reduced to hold actuation while heating of the solenoid is held in check. Mar. 1999 © TOSHIBA TEC 16 - 47 6570/5570 ADF...
Page 339 When all three reed switches turn ON, the relay coil is excited to supply +24V power to the drive circuit. The voltage of CN6 and CN7 becomes 0V when all three switches are ON. When one of the switches turns OFF, the voltage of CN6 and CN7 becomes 24V. 6570/5570 ADF 16 - 48 Mar. 1999 © TOSHIBA TEC...
Page 340 Note: During assembly, insert the clips and fix the transport unit at the position shown in the figure. Clip [B] Transport belt (1) Remove the transport unit. (2) Loosen the screw (front) fastening the belt ten- sion plate. Mar. 1999 © TOSHIBA TEC 16 - 49 6570/5570 ADF...
Page 341 2. The belt tension roller in the feed and exit side is different in the shape of the leaf spring at the central one and the end. So, pay attention the shape difference at installation. 6570/5570 ADF 16 - 50 Mar. 1999 © TOSHIBA TEC...
Page 342 (3) Disconnect the 2 connectors and remove the earth lead (1 screw) and harness band. (4) Remove the 2 screws, and slide the ADF unit to the rear side and light up to remove. ADF unit Mar. 1999 © TOSHIBA TEC 16 - 51 6570/5570 ADF...
Page 343 (8) Remove the 6 screws and the feed unit. Note: M4 x 12 ..4 pcs. M4 x 8 ..1 pc. M3 x 6 ..1 pc. (harness guide) 6570/5570 ADF 16 - 52 Mar. 1999 © TOSHIBA TEC...
Page 344 (2) Remove the jam release cover by removing the 2 screws (front and rear sides). Note: To assemble, be sure to insert spring wash- ers to fasten the jam release cover. Jam release cover Mar. 1999 © TOSHIBA TEC 16 - 53 6570/5570 ADF...
Page 345 (4) Slide the aligning roller (L) to draw out the roller. Aligning roller (L) [K] Timing sensor and size sensor (1) Remove the feed unit. (2) Remove the 4 screws. Inlet guide 8070/6570/5570/4580 ADF 16 - 54 Mar. 2000 © TOSHIBA TEC...
Page 346 (2) Remove the inlet guide. (3) Remove the front-side E-ring and bush. (4) Remove the plastic ring fastening the roller, and Pick-up roller draw out the roller. Plastic ring Aligning roller(R) Mar. 1999 © TOSHIBA TEC 16 - 55 6570/5570 ADF...
Page 347 (3) Disconnect the 2 connectors from PC board. (4) Remove the earth lead fastened to the hinge section. (5) Remove the screw from the harness guide. (6) Remove the 5 screws and the reversal unit. Reverse unit 6570/5570 ADF 16 - 56 Mar. 1999 © TOSHIBA TEC...
Page 348 Disconnect the connector and remove the 2 screws. [R] Reversal roller (1) Remove the reversal unit. (2) Remove the stay (2 screws). (3) Remove the E-rings from the front side. Mar. 1999 © TOSHIBA TEC 16 - 57 6570/5570 ADF...
Page 349 (1) Remove the ADF unit. (2) Remove the cover. (3) Disconnect the 11 connectors. (4) Remove the 2 screws, and slide the PC board from the hooking section on the rear side to remove. 6570/5570 ADF 16 - 58 Mar. 1999 © TOSHIBA TEC...
Page 350 [U] ADF fan motor Connector (1) Remove the PC board. (2) Disconnect the connector and remove the screw. (3) Remove the 2 screws. Mar. 1999 © TOSHIBA TEC 16 - 59 6570/5570 ADF...
Page 351 1. Jump mylar sheet (feed guide) Feed guide Fixing reference: Clearance 0 to 0.5mm Jump mylar sheet (when pushed up against this line) A-A cross-section 6570/5570 ADF 16 - 60 Mar. 1999 © TOSHIBA TEC...
Page 352 Feed cover mylar sheet Fixing reference: Clearance 0 to 0.5mm Fixing reference: Clearance (when pushed up against this rib) 0 to 0.5mm (when pushed up against this rib) a-a cross-section b-b cross-section Mar. 1999 © TOSHIBA TEC 16 - 61 6570/5570 ADF...
Page 353 (Overlapping of ribs is not allowed. Clearance must be 0 to 2mm.) Feed sheet 1 Feed sheet 5 6570/5570 ADF 16 - 62 Mar. 1999 © TOSHIBA TEC...
Page 354 4. Guide mylar sheets, mirror seals, mirror mylar sheets * When fixing the mirror seal, do not scratch the mirror surface. C-C cross-section Mirror mylar sheet Guide mylar sheet (2 locations) Mirror seal B-B cross-section Mar. 1999 © TOSHIBA TEC 16 - 63 6570/5570 ADF...
Page 355 Aligning mylar Sheet Fixing reference: Deviation 0 to -0.5mm (protrusion not allowed) (protrusion also not allowed on opposite face) 6. Weight mylar Sheet (weight holder) Weight mylar sheet Weight holder 6570/5570 ADF 16 - 64 Mar. 1999 © TOSHIBA TEC...
Page 356 7. Guide mylar sheet (2) Guide mylar sheet (2) (3 locations) A-A cross-section Mar. 1999 © TOSHIBA TEC 16 - 65 6570/5570 ADF...
Page 357 Fix in order 1 , 2 and 3 so that mylar does not sag. Sagging not allowed Make sure that edges of mylar guide do not deviate. Arrow View Guide mylar sheet (3) 6570/5570 ADF 16 - 66 Mar. 1999 © TOSHIBA TEC...
Page 358 (when pushed up against this line) * The paper path direction in the figure must be free A-A cross-section from steps that may catch the paper. 10. Flapper rubber skirt Flapper rubber skirt Arrow view Mar. 1999 © TOSHIBA TEC 16 - 67 6570/5570 ADF...
Page 359 11. Reversal mirror seal * When fixing the reversal mirror seal, do not scratch the mirror surface. Reversal mirror seal Reversal mirror seal A-A cross-section 6570/5570 ADF 16 - 68 Mar. 1999 © TOSHIBA TEC...
Page 360 12. Cushions Fixing reference: Clearance 0 to 0.5mm (end face reference) Cushions Mar. 1999 © TOSHIBA TEC 16 - 69 6570/5570 ADF...
Page 361 13. Reversion roller cushions, reversal roller mylar sheets (reversal roller cushion) Fixing reference: ± Reversal roller cushions 0.5mm (3 locations) Reversal roller mylar sheets (3 locations) (reversal roller mylar sheet) Fixing reference: 0 to -0.5mm 6570/5570 ADF 16 - 70 Mar. 1999 © TOSHIBA TEC...
Page 362 The tip must be firmly pressed against the DF cover. Section a: (The tip must not protrude Insert into hole, and fix to rib. from the DF cover.) A-A cross-section Mar. 1999 © TOSHIBA TEC 16 - 71 6570/5570 ADF...
Page 363 DF cover sheet 2 DF cover sheet 8 (2 locations) (2 locations) (Overlapping of the gate DF cover sheet 1 not allowed.) (2 locations) (Overlapping of the gate not allowed.) 6570/5570 ADF 16 - 72 Mar. 1999 © TOSHIBA TEC...
Page 364 16. Tray sheet guides Fixing reference: 0 to -0.5mm Fixing reference: 0 to -0.5mm (end face rounded corner end (end face rounded corner end reference) reference) Tray sheet guide Tray sheet guide Mar. 1999 © TOSHIBA TEC 16 - 73 6570/5570 ADF...
Page 365 Note2. To perform correctly Note 1, be sure to make the discharge brush rise up from the GUIDE-ALGN-IN. FRM-FEED-794-R Note 1 Note 2 Rear side Note 2 GUIDE-ALGN-IN Discharge brush 8070/6570/5570/4580 ADF 16 - 74 Mar. 2000 © TOSHIBA TEC...
Page 366 COV-DF-794 20. Pad cushion 0~1mm Pad cushion Must not protrude beyond the bracket BKT-PAD-SPT-794 Pad cushion 0~1mm Must not protrude beyond the bracket Align and then attach (Gap = 0~0.5mm) Mar. 2000 © TOSHIBA TEC 16 - 75 8070/6570/5570/4580 ADF...
Page 367 22. Reverse section side mylar Rounded corner end –1 0 ~ 0.5 Not to become stuck on the rib MYLAR-RVS-U-R View MYLAR-RVS-U-F 0 ~ 0.5 Not to become stuck on the rib Unit: mm 8070/6570/5570/4580 ADF 16 - 76 Mar. 2000 © TOSHIBA TEC...
Page 368 A-A' Sectional view Paper-feed Mylar (1) 24. Paper-feed mylar (2) 0~+0.5mm 0~+0.5mm Paper-feed Mylar (2) for end face for bent area 0~+0.5mm 0~+0.5mm Paper-feed Mylar (2) for end face for bent area Mar. 2000 © TOSHIBA TEC 16 - 77 8070/6570/5570/4580 ADF...
Page 371: Power Supply Unit
When the protection circuit has operated, remove the cause of circuit operation (e.g. short), and reset the circuit by turning the power OFF then ON again. Mar. 1999 © TOSHIBA TEC 17 - 1 6570/5570 POWER SUPPPLY...
Page 372 Breaker 24VC Main switch Live 24VD Neutral Reg. Door switch 36VA 36VB Switching power supply 36VD Frequecy 3.3VA~C reactor GNDA~C(3.3V) 5.1VB,D,E,H,I GNDB,D,E,H,I(5.1V) 12VA~C DGA~C(12V) Reg. 24VF 24VG 24VH 6570/5570 POWER SUPPLY 17 - 2 Mar. 1999 © TOSHIBA TEC...
Page 373 0~200 ms 21.6V or more +24V(MAIN) 21.6V or more 4.95V or more +5.1V(DOOR) 4.95V or more 21.6V or more +24V(DOOR) 21.6V or more 34.2V or more +36V(DOOR) 34.2V or more Mar. 1999 © TOSHIBA TEC 17 - 3 6570/5570 POWER SUPPPLY...

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Toshiba 8070 Service Manual

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