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Sanyo SRT-4040 Service Manual
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Sanyo SRT-4040 Service Manual

Sanyo SRT-4040 Service Manual

Real time video cassette recorder
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Download this manual See also: Instruction Manual
SERVICE MANUAL
Real Time Video Cassette Recorder
CONTENTS
1. DISASSEMBLY .................................................................... 6
2. ELECTRICAL ADJUSTMENT .............................................. 8
MECHANISM PARTS ......................................................... 12
ACCESSORIES & PACKING MATERIALS ........................ 14
CABINET & CHASSIS PARTS ........................................... 14
ELECTRICAL PARTS ........................................................ 15
CIRCUIT DIAGRAM & PRINTED WIRING BOARDS ............. C1
NOTE: 1. Parts order must contain model number, part number, and description.
2. Substitute parts may be supplied as the service parts.
3. N.S.P. : Not available as service parts.
Design and specifications are subject to change without notice.
NB4QR/NA
FILE NO.
SRT-4040
(Product Code : 175 700 74)
(U.S.A.)
(Canada)
(Korea)
(Taiwan)
Please see other materials with Reference
number given in table below.
Materials
Reference No.
Model No.
Mechanism
VP-R/VP-N
MM5310380
Manual
Mechanism
REFERENCE No.SM5310428

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  • Page 1: Table Of Contents

    FILE NO. SERVICE MANUAL SRT-4040 Real Time Video Cassette Recorder (Product Code : 175 700 74) (U.S.A.) (Canada) (Korea) (Taiwan) CONTENTS MAINTENANCE TABLE ON THE MONITOR SCREEN ... 3 1. DISASSEMBLY ..............6 Please see other materials with Reference 2. ELECTRICAL ADJUSTMENT ..........8 number given in table below.

  • Page 2: Safety Precautions

    SAFETY PRECAUTIONS WARNING: Service should not be attempted by anyone unfamiliar with the necessary precautions for this recording or playback equipment. The following precautions are necessary during servicing: Many electrical and mechanical parts in this recorder have Before returning the set to the customer, always perform an AC leakage current check on the exposed metallic special safety-related characteristics for providing protec- parts of the cabinet, such as terminals, screwheads, metal...

  • Page 3: Maintenance Table On The Monitor Screen

    MAINTENANCE TABLE ON THE MONITOR SCREEN To display the maintenance table, press “MENU” key with “REC/PLAY SPEED” key while the fourth MENU <POWER FAILURE> is displayed. Press “MENU” key with “REC/PLAY POWER FAILURE Maintenance table 1 SPEED” key “MENU” key “MENU”...
  • Page 4 Error Codes (Self-Diagnosis Contents) E01→ The cylinder motor does not rotate. E10→ The capstan motor does not rotate, or the capstan E02→ The take-up reel does not rotate. motor and the cylinder motor does not rotate with E03→ The capstan motor does not rotate. the cassette inserted.
  • Page 5 Maintenance Table : Cleaning : Confirmation : Lubrication : Exchange 2000H 4000H 8000H Notes 6000H ASSY, BRAKE BAND ASSY, LEVER BT (tape guide) FULL ERASE HEAD ASSY, ROLLER CLEANER ASSY, GUIDE ROLLER ASSY, MOUNTING INCLNE S ASSY, MOUNTING INCLNE T Tape path ACE HEAD system...

  • Page 6: Disassembly

    1. DISASSEMBLY 1-1. REMOVAL OF CABINET M-NB4QR/NA-1 Cabinet Clamps (C) Door Opener Lever Edge of Cassette Holder Indicators (LED) Clamp (B) Clamps (C) Clamps (A) Terminal Cover TM-1 PWB CP-1 PWB Main Unit Indicators (LED) Clamp (B) Front Panel Cassette Door Bottom Cover Fig.
  • Page 7 M-NC4QG/U-2 VD-1 PWB Screw Main Unit Screw Clamps (B) CP-1 PWB (Foil side) CP-1 PWB (parts side) Clamps (D) TM-1 PWB Fig. 1-1-2 1-2. CIRCUIT BOARD LOCATIONS M-NB4QR/NA TB-1 PWB PW-1 PWB TM-1 PWB TB-2 PWB TB-4 PWB VD-1 PWB CP-1 PWB Fig.

  • Page 8: Electrical Adjustment

    2. ELECTRICAL ADJUSTMENT 2-1. SERVO CIRCUIT ADJUSTMENT • These adjustments should be carried out upon completion of the tape transport adjustments. • If the tape transport adjustments (except the tilt adjustment) are done after these adjustments, follow the procedures again in section 2-1-3.
  • Page 9 2-1-4. 24H PLAYBACK MODE TRACKING ADJ. Notes : • Set the REC/PLAY SPEED button to indicator panel to the Measuring Point Measuring Equipment Adj. Condition 8H (8 hours) mode. • Self-recoding means “Record any broadcasting or video sig- Picture of Color bar generator Self-recording nal and play back the just-recorded portion”.
  • Page 10 2-2. VIDEO CIRCUIT ADJUSTMENT Before making the following adjustments, complete the adjustments described in section 2-1. “Servo Circuit.” 2-2-1. TEST EQUIPMENT AND STANDARDS REQUIRED NTSC color bar signal with 100% white level (EIA color bar signal), Color Bar Signal Generator monoscope signal Frequency Counter Vertical sensitivity...

  • Page 11: Test Points For Tape Path Adjustment

    3. TEST POINTS FOR TAPE PATH ADJUSTMENT Test points TP153 (ENV) and TP152 (SW-P) for tape path adjustment are shown in figure below. TP152 TP151 VR151 TP153 VD-1 PWB (Parts side) Fig. 3-1 – 11 –...

  • Page 12: Parts List

    4. PARTS LIST LOCATION PARTS NO. DESCRIPTION LOCATION PARTS NO. DESCRIPTION 20100 613 176 2343 ASSY,REEL SUPPLY MECHANISM PARTS 1 613 169 3722 ASSY,REEL SUPPLY 11000 613 196 4600 COMPL,CYLINDER,2N4N-QL 20110 412 015 8603 SPECIAL WASHER 3.1X6X0.25 11100 613 196 4648 ASSY,CYLINDER,LWR,4Q 20200 613 160 4193...
  • Page 13 LOCATION PARTS NO. DESCRIPTION LOCATION PARTS NO. DESCRIPTION 5060A 613 151 8872 ASSY,MOUNTING INCLINE T 10160 412 048 7505 SPECIAL SCREW-2.6X4 5060B 613 022 0233 ASSY,GUIDE,ROLLER 10700 613 167 5926 MOUNTING CAPSTAN 5060C 412 048 4504 SPECIAL SCREW-2X3 10720 412 048 8007 SPECIAL SCREW-2.6X6 50700 613 175 6472...

  • Page 14: Accessories & Packing Materials

    LOCATION PARTS NO. DESCRIPTION LOCATION PARTS NO. DESCRIPTION 613 198 3250 COMPL PWB,TB-4 ACCESSORIES & PACKING MATERIALS 613 082 5223 HOLDER 9170 613 198 2888 INSTRUCTION MANUAL 613 194 0420 COMPL PWB,TM-1 9200 645 052 4066 CORD,POWER-2.0MK 613 198 3861 DOOR CASSETTE 9001 613 196 9674...
  • Page 15 LOCATION PARTS NO. DESCRIPTION LOCATION PARTS NO. DESCRIPTION 613 198 3250 COMPL PWB,TB-4 ACCESSORIES & PACKING MATERIALS 613 082 5223 HOLDER 9170 613 198 2888 INSTRUCTION MANUAL 613 194 0420 COMPL PWB,TM-1 9200 645 052 4066 CORD,POWER-2.0MK 613 198 3861 DOOR CASSETTE 9001 613 196 9674...

  • Page 16: Electrical Parts

    ELECTRICAL PARTS Note: 1. Materials of Capacitors and Resistors are abbreviated as follows ; Resistors Capacitors MT-FILM Metallized Film Resistor MT-POLYEST Metallized Polyester Capacitor MT-GLAZE Metallized Glaze Resistor MT-COMPO Metallized Composite Capacitor OXIDE-MT Oxide Metallized Film Resistor TA-SOLID Tantalum Solid Capacitor AL-SOLID Aluminum Solid Capacitor NP-ELECT...
  • Page 17 LOCATION PARTS NO. DESCRIPTION LOCATION PARTS NO. DESCRIPTION Q2048 405 138 6700 TR DTC144EKA D3004 407 078 2705 DIODE 1SS244 Q2071 405 003 5609 TR 2SA1318-S D3005 407 012 4406 DIODE 1SS133 405 003 5708 TR 2SA1318-T D3008 407 063 8903 ZENER DIODE MTZJ5.6C 405 003 5807 TR 2SA1318-U...
  • Page 18 LOCATION PARTS NO. DESCRIPTION LOCATION PARTS NO. DESCRIPTION (TRANSFORMER) C1238 403 298 9609 CERAMIC 0.1U K 16V T2001 645 018 3515 TRANS,OSC,70KHZ C1241 403 167 7002 ELECT 4.7U M 50V (CAPACITORS) C1242 403 215 2201 CERAMIC 0.01U K 50V C1001 403 191 8709 ELECT 1U M 50V C1250...
  • Page 19 LOCATION PARTS NO. DESCRIPTION LOCATION PARTS NO. DESCRIPTION C3036 403 157 3106 CERAMIC 56P J 50V R1026 401 105 2904 MT-GLAZE 22K JA 1/16W R1045 401 105 0504 MT-GLAZE 1K JA 1/16W C3037 403 157 3106 CERAMIC 56P J 50V C3038 403 135 3302 ELECT 1000U M 6.3V...
  • Page 20 LOCATION PARTS NO. DESCRIPTION LOCATION PARTS NO. DESCRIPTION R2005 401 105 1105 MT-GLAZE 12K JA 1/16W R3071 401 105 0504 MT-GLAZE 1K JA 1/16W R3073 401 105 2201 MT-GLAZE 180K JA 1/16W R2006 401 105 5301 MT-GLAZE 4.7K JA 1/16W R2007 401 105 1105 MT-GLAZE...
  • Page 21 LOCATION PARTS NO. DESCRIPTION LOCATION PARTS NO. DESCRIPTION R7419 401 105 8203 MT-GLAZE 68K JA 1/16W Q1543 405 014 4400 TR 2SC2412K-Q 405 014 4509 TR 2SC2412K-R R7420 401 105 8203 MT-GLAZE 68K JA 1/16W R7421 401 105 8203 MT-GLAZE 68K JA 1/16W 405 014 4608 TR 2SC2412K-S...
  • Page 22 LOCATION PARTS NO. DESCRIPTION LOCATION PARTS NO. DESCRIPTION R1513 401 105 7305 MT-GLAZE 820 JA 1/16W (RESISTORS) R1515 401 105 7909 MT-GLAZE 0.000 ZA 1/16W R7135 401 018 2701 CARBON 330 JA 1/4W R1521 401 105 0504 MT-GLAZE 1K JA 1/16W R7136 401 016 2505 CARBON...
  • Page 23 LOCATION PARTS NO. DESCRIPTION LOCATION PARTS NO. DESCRIPTION L5002 645 010 0598 LINE FILTER (CONNECTORS) L5003 645 006 3602 INDUCTOR,1.1UH CN851 645 006 0977 PLUG,10P (N.S.P) L5004 645 009 3791 CORE,BEAD CN852 645 048 3974 TERMINAL,BOARD (N.S.P) L5005 645 009 3791 CORE,BEAD L5101 645 011 6957...
  • Page 24 CIRCUIT DIAGRAMS & PRINTED WIRING BOARDS TABLE OF CONTENTS OVERALL WIRING, MECHANISM CONNECTION & BLOCK DIAGRAMS Page OVERALL WIRING ............................C3 MECHANISM CONNECTION ........................... C4 AUDIO CIRCUIT ............................... C4 VIDEO CIRCUIT ............................... C5 SYSTEM CONTROL & SERVO CIRCUIT ......................C6 CIRCUIT DIAGRAMS CP-1 BOARD (VA-A) VIDEO &...
  • Page 25 NOTES: 1. All resistance values in "OHMS" unless otherwise noted. (K=1,000 ; M=1,000,000) 2. All capacitance values in "µF" unless otherwise noted. p=pico farad ; µ ,u or U=micro farad 3. All inductance values in "µH" unless otherwise noted. µ ,u or U=micro henry ; m=milli henry PRODUCT SAFETY NOTICE THE COMPONENTS DESIGNATED BY A SYMBOL ( ) IN THIS...
  • Page 26 CIRCUIT DIAGRAMS & PRINTED WIRING BOARDS TABLE OF CONTENTS OVERALL WIRING, MECHANISM CONNECTION & BLOCK DIAGRAMS Page OVERALL WIRING ............................C3 MECHANISM CONNECTION ........................... C4 AUDIO CIRCUIT ............................... C4 VIDEO CIRCUIT ............................... C5 SYSTEM CONTROL & SERVO CIRCUIT ......................C6 CIRCUIT DIAGRAMS CP-1 BOARD (VA-A) VIDEO &...
  • Page 27 NOTES: 1. All resistance values in "OHMS" unless otherwise noted. (K=1,000 ; M=1,000,000) 2. All capacitance values in "µF" unless otherwise noted. p=pico farad ; µ ,u or U=micro farad 3. All inductance values in "µH" unless otherwise noted. µ ,u or U=micro henry ; m=milli henry PRODUCT SAFETY NOTICE THE COMPONENTS DESIGNATED BY A SYMBOL ( ) IN THIS...

  • Page 28: Overall Wiring

    OVERALL WIRING, MECHANISM CONNECTION & BLOCK DIAGRAMS OVERALL WIRING W0001 CN154 CN156 1AC0W31B63800 CN001 BOARD IN SENSER ALL CLEAR ALL CLEAR TRS DATA TRS DATA FLAT CABLE CT-1 RTS DATA RTS DATA 1AV4W32N05170 CN155 RTS CLK RTS CLK MECHANISM D-PG D-PG (OPTION BOARD) ALWAYS 13V(MH)

  • Page 29: Mechanism Connection

    MECHANISM CONNECTION AUDIO CIRCUIT...

  • Page 30: Video Circuit

    VIDEO CIRCUIT...

  • Page 31: System Control & Servo Circuit

    SYSTEM CONTROL & SERVO CIRCUIT...

  • Page 32: Circuit Diagrams

    CIRCUIT DIAGRAMS CP-1 BOARD (VA-A) VIDEO & AUDIO TO SY-A VA-A CN102 B3-70074/NB4QR-NA VOLTAGE:REC(PLAY)MODE CN104 ALARM/1SHOT IN PB C CONTROL/CLOCK IN SWD 5V SERIES/EJECT IN EXT TIMER/AL RESET IN TO VD-1 CN151 WARNING OUT CONTROL/CLOCK OUT T.END/SERIES OUT CN101 J1205 10.0 TIMER/EJECT OUT 29PIN OUT...
  • Page 33 CP-1 BOARD (VA-A) VIDEO & AUDIO [LEFT] (1.8) (1.0) (2.5) (1.8) (0.3) 5.2(5.2) (0.3) (0.1) 5.1(5.1) 5.1(5.1) (3.4) 5.1(5.1) (3.3) (2.5) (3.3) (3.3) 2.4(1.1) (3.0) (1.9) 0.1(3.0) 2.7(2.7) 2.0(2.0) 5.1(5.1) (2.3) (2.7) (1.8) (1.5) (0.6) (2.5) (1.6) (2.5) (0.7) (3.3) (3.9) (2.5) 0.0(1.4)
  • Page 34 CP-1 BOARD (VA-A) VIDEO & AUDIO [RIGHT] 1AV4L26B0210J (1.8) (1.0) (2.5) (1.8) (0.3) 5.2(5.2) (0.3) (0.1) 5.1(5.1) 5.1(5.1) (3.4)

  • Page 35: Video Circuit Waveforms

    IC301 SYSTEM CONTROL, TIMER, OSC & SERVO MPU PIN FUNCTIONS TABLE VIDEO CIRCUIT WAVEFORMS / I O TEST POINT LOCATION WAVEFORM TEST POINT LOCATION WAVEFORM c t i e l i l a i , l l i IC101 PIN17 IC101 PIN43,45 PLAY REC/PLAY...

  • Page 36: Board (Sy-A) System Control & Servo

    CP-1 BOARD (SY-A) SYSTEM CONTROL & SERVO TO VA-A LOADING MOTOR DRIVE SWD 12V POWER DOWN DET (86) IC303 IC306 CTL - MN1381R (85) CTL + LB1643L TO VA-A NOTE NOT SPECIFIED DIODES:1SS133 A MUTE SY-A (24H) GND(MCL) VOLTAGE:REC(PLAY)MODE (12H) B2-70074/NB4QR-NA REC H GND(MCL)
  • Page 37 CP-1 BOARD (SY-A) SYSTEM CONTROL & SERVO [LEFT] IN(CASINO) (EJECT IN(CASINO) (SERIES...
  • Page 38 CP-1 BOARD (SY-A) SYSTEM CONTROL & SERVO [RIGHT] IN(CASINO) (EJECT IN(CASINO) (SERIES...

  • Page 39: Servo Circuit Waveforms

    TM-1 BOARD KEY SWITCH CN711 REPEAT LED SEG K SEG J SEG I SEG H SEG G SEG F SEG B TO CP-1(TM-A) CN741 DISPLAY(FLD) GRID/ANODE ASSIGNMENT DRAWING & TABLE SERVO CIRCUIT WAVEFORMS 8G 7G 6G 5G 4G 3G 2G TEST POINT TEST POINT WAVEFORM...

  • Page 40: Board (Tm-A) Display & Key Scan

    CP-1 BOARD (TM-A) DISPLAY & KEY SCAN A7401 1AV4T41B04100 TM-A T2-70074/NB4QR-NA 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 J7404 CN741 REPEAT LED SEG K SEG J SEG I SEG H...

  • Page 41: Board Y/C Mix & Relay

    VD-1 BOARD Y/C MIX & RELAY CN157 CN158 ALARM/1SHOT IN ALARM/1SHOT IN CONTROL/CLOCK IN CONTROL/CLOCK IN SERIES/EJECT IN SERIES/EJECT IN EXT TIMER/AL RESET IN EXT TIMER/AL RESET IN WARNING OUT WARNING OUT CONTROL/CLOCK OUT CONTROL/CLOCK OUT T.END/SERIES OUT T.END/SERIES OUT TIMER/EJECT OUT TIMER/EJECT OUT SW OUT...

  • Page 42: Board Terminal

    TB-1 BOARD TERMINAL CP-1, TB-4 BOARDS (PW-A) POWER SUPPLY CN852 R8501 4.7K J8501 C8501 1000P F5401 ALARM/1SHOT IN 2.5A250V PW-A CN546 J8502 R8502 4.7K (RED) AC IN C8502 1000P CONTROL/CLOCK IN CN851 R8503 4.7K P2-70074/NB4QR-NA J8503 C8503 1000P ALARM/1SHOT IN SERIES/EJECT IN CONTROL/CLOCK IN R8504...

  • Page 43: Board Power Supply

    PW-1 BOARD POWER SUPPLY L5002 10mH;0.6A CN501 L5004 AC IN B.C. AC IN C5002 AC IN B.C. 0.033/250 AC IN L5005 C5001 TO CP-1(PW-A) CN543 0.033/250 T5001 1AV4L51B2610N C5005 2200P/400 D5001 DBC10G C5010 100;200 D5101 D5101 L5101 RK39 10UH J5104 TO CP-1(PW-A) CN541 CN511...

  • Page 44: Printed Wiring Boards (P.w.b.)

    PRINTED WIRING BOARDS (P.W.B.) CP-1 P.W.B.
  • Page 45 CP-1 P.W.B. [LEFT] J1462 C1064 R1118 C3058 J1005 J1304 J1306 J1463 J1378 L1005 C3060 R3065 J1459 D3011 J1325 R1205 J1464 J1002 C1111 R1111 D3010 J1315 J1467 R3064 C1073 Q1119 L1111 R3066 R1119 C3062 J1455 J1379 J1473 CN202 D1103 J1470 R3063 R3068 J1471 D1101...
  • Page 46 CP-1 P.W.B. [RIGHT] PW-A Y5002 CN544 LOC.NO.5401~ CAUTION CN547 L1201 TB-3 D5451 JK201 JK202 D3031 C2117 J1204 J1416 IC541 D2111 C3130 C1201 J5451 D5420 CN546 J5452 R5402 R2204 R2112 C2114 C5422 R2116 D5421 J2111 RISK OF FIRE Q3101 Q3102 R5422 C1250 R5420 J1201...

  • Page 47: Pwb

    PW-1 P.W.B. VD-1 P.W.B. SW P CN154 VR151 TP151 TP153 TP152 C1545 R1634 IC161 R1541 C1533 CN156 CN155 R1551 C1521 R1542 FFC CONTACT SIDE R1536 R1601 Q1544 R1631 R1550 R1537 C1522 Q1543 Q1521 C1524 R1603 Q1631 Q1542 R1530 R1523 C1603 R1545 R1546 R1531...

  • Page 48: Pwb

    TM-1 P.W.B. S7109 S7102 CN711 CN712 MENU DOWN SHIFT DOWN POWER S7107 SHIFT RIGHT CN713 MENU UP SPEED S7121 S7101 MENU S7122 TIMER D7102 C7150 ONSCREEN S7125 ALL CLEAR D7125 J7106 S7117 STOP C7133 S7113 S7126 S7119 S7116 S7114 S7115 SCAN EJECT REC CHECK...
  • Page 49 SANYO Electric Co., Ltd. Osaka, Japan Aug./’02 Printed in Japan...

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