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Hitachi 57S715 Manual
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Hitachi 57S715 Manual

Dp-4x chassis training
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CONTENTS...
2004 DP-4X Chassis Projection Television Information
HITACHI
PROJECTION
http://www.hitachiserviceusa.com
September 2006 (ver v)
TELEVISION
2004 MODEL RELEASE
DIGITAL HD READY PTV
Model
57S715
51S715
65F710
57F710
51F710
51F510
57F510
Service Web Site
Materials Prepared by... Alvie Rodgers C.E.T. (Chamblee, GA.)
Chassis
Remote
DP-47
CLU-3842WL
DP-47
CLU-3842WL
DP-45
CLU-4341UG2
DP-45
CLU-4341UG2
DP-45
CLU-4341UG2
*DP-43
CLU-4341UG2
*DP-43
CLU-4341UG2
* Does Not Have a
Digital Module. No
ATSC Tuner.
P/N
HL02062
HL02062
HL02071
HL02071
HL02071
HL02071
HL02071

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  • Page 1 September 2006 (ver v) HITACHI PROJECTION TELEVISION 2004 MODEL RELEASE DIGITAL HD READY PTV Model Chassis Remote DP-47 CLU-3842WL HL02062 57S715 51S715 DP-47 CLU-3842WL HL02062 65F710 DP-45 CLU-4341UG2 HL02071 DP-45 CLU-4341UG2 HL02071 57F710 51F710 DP-45 CLU-4341UG2 HL02071 51F510 *DP-43 CLU-4341UG2...
  • Page 2 DP-4X BLANK PAGE (NOTES) BLANK PAGE...
  • Page 3 Materials prepared by September 2006 DP-4X TABLE OF CONTENTS (ver v) Alvie Rodgers C.E.T. TOPICS PAGE SECTION (1) POWER SUPPLY DIAGRAMS: • Generic Power Supply Circuits Explained ---------------------------------------------------------- 01-01 • Deflection Side Shutdown Circuit Diagram Explained ------------------------------------------- 01-04 • Deflection Side Shutdown Circuit Diagram Explained ------------------------------------------- 01-05 •...
  • Page 4 Materials prepared by September 2006 DP-4X TABLE OF CONTENTS (ver v) Alvie Rodgers C.E.T. TOPICS PAGE SECTION (4) AUDIO CIRCUIT INFORMATION: • Audio Signal Selection Circuit Diagram Explanation --------------------------------------------- 04-01 • Audio Signal Selection Circuit Diagram Explanation --------------------------------------------- 04-03 SECTION (5) DEFLECTION CIRCUIT: •...
  • Page 5 POWER SUPPLY INFORMATION DP-4X CHASSIS INFORMATION SECTION 1...
  • Page 6 DP-4X BLANK PAGE “NOTES” BLANK PAGE...
  • Page 7 DP-4X GENERIC POWER SUPPLY SHUTDOWN EXPLANATION GENERIC SHUTDOWN CIRCUITS EXPLAINED: The following circuits are commonly used in Hitachi product and relate to the drawings for Shutdown: SW +115V EXCESSIVE CURRENT DETECTION RP34 0.39 (See Figure 1) SW+115V One very common circuit used in many Hitachi tele-...
  • Page 8 DP-4X GENERIC POWER SUPPLY SHUTDOWN EXPLANATION VOLTAGE LOSS or SHORT DETECTION (See Figure 4) One circuit used is the Voltage Loss Detection cir- cuit. This is a very simple circuit that detects a loss of Any Positive a particular power supply and supplies a Pull-Down B+ Supply Voltage path for the base of a PNP transistor.
  • Page 9 DP-4X GENERIC POWER SUPPLY SHUTDOWN EXPLANATION (Continued from page 2) See the DP-4X Signal Power Supply Shutdown Circuit for details. These shutdown circuits are defeated because the SW (Switched) power supplies are turned off in standby. So to prevent faults triggering of the shutdown circuit, the sensing circuits are turned off also.. Q206 generates the shutdown high signal if any of the shutdown circuits attached to its base become low.
  • Page 10 DP-4X DEFLECTION SIDE SHUTDOWN DIAGRAM EXPLANATION See The DP-4X Deflection Side Shutdown Diagram for (A), (B), (C), (D). HIGH VOLTAGE TOO HIGH DETECTION: One of the Shutdown circuits for output (A). • DH15 High Voltage Too High Sensing Circuit. This circuit monitors the High Voltage line generated by rectifying the pulse from the flyback TH01 pin 7.
  • Page 11 DP-4X DEFLECTION SIDE SHUTDOWN DIAGRAM Any fluctuations in High Voltage will also be reflected by the 50P output P/P. By monitoring the 50P (50 Pulse) rises in High Voltage will be sensed. If High Voltage climbs too high, DH15 will fire and trigger a shut down event. DH14 will fire and stop High Voltage Horz.
  • Page 12 DP-4X PROT_OVP and PROT_OCP SHUTDOWN DIAGRAM EXPLANATION PROT_OVP and PROT_OCP SHUTDOWN CIRCUITS EXPLAINED: (A) (B) (E) (F) (See the PROT_OVP and PROT_OCP Shutdown Diagram for Details). CPT PROTECT (+200V Excessive Current Detection): One of several Shutdown outputs for (E). • On the RED CRT PWB +220V (VM 200V) Excessive Current Detection Monitored by RE35.
  • Page 13 DP-4X PROT_OVP and PROT_OCP SHUTDOWN DIAGRAM PROT_OVP SHUT DOWN DIAGRAM SIGNAL PWB DEF. PWB / RED CRT PWB GREEN DEF. POWER PDC1 RE35 R.G.B. Drives 2.2 Ohm +220V VM 200V ERG1 PDS3 PDS3 QE08 RE27 RE34 Active Hi RE31 VM PROT VM PROT PROT_OVP PROTECT...
  • Page 14 DP-4X DEFLECTION POWER SUPPLY SHUTDOWN OUTPUT DIAGRAM EXPLANATION DEFLECTION POWER SUPPLY SHUTDOWN OUTPUT CIRCUIT DIAGRAM EXPLAINED: (C) (See the Deflection Power Supply Shutdown Output Circuit Diagram for Details). PROT_OVP: Identified as (C). EXCESSIVE DEFLECTION 115V B+ CURRENT DETECTION: Part of several Shutdown outputs to (C). •...
  • Page 15 DP-4X CHASSIS Deflection Power Supply Shutdown Output Circuit Diagram OCP and OVP TP01 +28V DP30 LP30 LP33 1.26A SW+ 28V GREEN RP46 CP30 L.E.D. CP32 CP34 DP50 -28V Short or Loss Detection CP33 CP35 DP46 DP47 RP47 DP31 0.65A SW -28V LP34 LP31 -28V...
  • Page 16 CIRCUITS ATTACHED TO THE BASE OF Q203: This year, Hitachi is utilizing a three legged diode OR gate style of input device for feeding shutdown inputs to the base of Q203. These diode OR gates and circuits attached are explained next.
  • Page 17 DP-4X SIGNAL POWER SUPPLY SHUTDOWN CIRCUIT EXPLANATION (Continued from page 10) D214 Left Hand Input Circuits: The left hand input to D214 is connected to the collector of Q205. This transistor works as an inverter. Its base inputs are monitoring DC voltages for shorts. Q205 base input circuits.
  • Page 18 DP-4X SIGNAL POWER SUPPLY SHUTDOWN CIRCUIT PPS1 Power 1 PROT_OCP PROT_OVP Power 3 Power 2 Active Low Active High Q104 RY105 R120 R125 SBY +5V D219 Q206 R126 5.7V SBY +5V 10.5V R237 RY101 C232 Signal Power R236 D104 Supply R110 3.3V R238...
  • Page 19 DP-4X STAND BY +5V POWER SUPPLY GENERATION EXPLANATION STAND-BY +5V POWER SUPPLY GENERATION EXPLANATION: The Stand By power supply operates anytime the set is plugged into an AC outlet. Shown below in Figure 1 is the Stand By power supply. IC101 is the Driver IC for this supply. It’s a self contained Oscillator, Driver IC.
  • Page 20 DP-4X POWER SUPPLY RELAY CONTROL EXPLANATION See The DP-4X Stand By +5.7V Generation Circuit Explanation for details. (Previous Page) See The DP-4X Power On and Off Circuit Diagram for details. (Page 01-16) Power Supply On and Off Circuit Explanation: The DP-4X Chassis utilizes 5 relays. 1.
  • Page 21 DP-4X POWER SUPPLY RELAY CONTROL EXPLANATION Continued from Previous Page See The DP-4X Power On and Off Circuit Diagram for details. (Page 01-16) (5) RY105 DC (SW +5.7V) Supply to the Low Voltage Regulators Relay When the set is turned on, the POWER DM command is supplied from pin 91 of the Microprocessor I004.
  • Page 22 DP-4X POWER ON and OFF CIRCUIT DIAGRAM SW +5.7V Audio 38.5V or 29V PPS1 POWER 1 POWER 3 POWER 2 SBY +5V 5.7V R120 R125 AC to AC to DS201 RY101 RY102 RY103 RY105 For Signal For Deflection Power Supply Power Supply Audio D104...
  • Page 23 DP-4X POWER SUPPLY SW +115V REGULATION EXPLANATION Hi-Voltage Power Supply Regulation Circuit Diagram explanation: (See Power Supply SW+115V Regulation Circuit Diagram for details) THIS POWER SUPPLY RUNS ONLY WHEN THE SET IS TURNED ON: TURNING ON THE SW +115V POWER SUPPLY: (See Relay Controls on previous page). RY102 AC Supply to the Deflection Power Supply Relay When the set is turned on, the POWER DEF command is supplied from pin 58 of the Microprocessor I004.
  • Page 24 DP-4X CHASSIS POWER SUPPLY SW +115V REGULATION CIRCUIT DIAGRAM Deflection Power Supply PPD3 From Relay RY102 AC Ground Side SW +7V TP01 CP03 CP04 43.3Vp/p 42.5Vp/p 58.5Khz RP16 Primary RP30 1 of 2 DP04 Ground Floating Ground DP01 Regulator Pin 12, 14, 15, 16 Photocoupler All 58.5Khz RP19...
  • Page 25 DP-4X CHASSIS IP01 VOLTAGES AND WAVEFORMS Voltage Waveform 2.53V 1.83V 2.27V 2.76V P/P 2.52V 4.46V 20.3V 10.39V 4.87V 12.6V p/p 58.5Khz 162V 314V p/p 58.5Khz 151V 308V p/p 58.5Khz 155V 317V p/p 58.5Khz 309V TP01 Pin 5 45.3V p/p 58.5Khz Anode DP04 Anode 42.5V p/p 58.5Khz...
  • Page 26 DP-4X SIGNAL POWER SUPPLY 5.7V REGULATION EXPLANATION 5.7V Power Supply Regulation Circuit Diagram explanation: (See Signal Power Supply 5.7V Regulation Circuit Diagram for details) THIS POWER SUPPLY RUNS ONLY WHEN THE POWER 1 COMMAND IS ACTIVE HIGH: TURNING ON THE 5.7V POWER SUPPLY: (See Power On/Off Circuit Diagram). RY101 directs AC to the Low Voltage Power Supply.
  • Page 27 DP-4X CHASSIS SIGNAL POWER SUPPLY 5.7V REGULATION CIRCUIT DIAGRAM Relay RY101 DM 5.6V F102 6 Amp D210 T201 Side T201 L204 5.7V FB202 D204 C202 Primary R223 1 of 2 Ground C228 C229 DS201 C201 R225 PC201 Start Up IC201 R208 R209 R210...
  • Page 28 DP-4X LED (Visual Trouble Detection) CIRCUIT EXPLANATION This explains the LEDs used in the Deflection Power Supply used for Visual Trouble Shooting Circuit Dia- gram explanation: (See the LED (Visual Troubleshooting) for the Deflection Power Supply Diagram on the next page for details) 2 GREEN LEDS In the DP-4X chassis, there are 2 Green LEDs that can be used for Visual Trouble shooting.
  • Page 29 DP-4X CHASSIS L.E.D. (Visual Troubleshooting) for the Deflection Power Supply 2 Total L.E.D. for visual trouble sensing observation. TP01 DP30 +28V LP30 LP33 1.26A SW+ 28V RP46 CP30 GREEN L.E.D. + & - SW 28V Active (LED) CP32 CP34 DP50 SW-28V Loss Detection CP33 CP35...
  • Page 30 DP-4X BLANK PAGE “NOTES” BLANK PAGE...
  • Page 31 MICROPROCESSOR INFORMATION DP-4X CHASSIS INFORMATION SECTION 2...
  • Page 32 DP-4X BLANK PAGE “NOTES” BLANK PAGE...
  • Page 33 DP-4X MICROPROCESSOR DATA COMMUNICATIONS CIRCUIT EXPLANATION Microprocessor Data Communications circuit diagram. (See DP-4X Microprocessor Data Communications Circuit Diagram for Details) The Microprocessor I004 must keep in communication with the Chassis to maintain control over the individual circuits. Some of the circuits must return information as well so the Microprocessor will know how to respond to different request.
  • Page 34 DP-4X MICROPROCESSOR DATA COMMUNICATIONS CIRCUIT EXPLANATION ON THE SIGNAL PWB: UD2003 Digital Tuner (ATSC Tuner) Not in the DP-43 Chassis. The Microprocessor I004 controls the Digital Tuner via communication lines. They are listed below; • DM RTS (Digital Module Receive Transmission) from pin (21) of PMS1 connector to pin (27) of I004. •...
  • Page 35 DP-4X MICROPROCESSOR DATA COMMUNICATIONS CIRCUIT EXPLANATION I009 Level Shift The Microprocessor I004 operates at 3.3Vdc. Most of the Circuits controlled by the Microprocessor operate at 5Vdc. The Level Shift IC steps up the DC voltage to accommodate. This IC isn’t controlled by the Microproces- sor, however it is in direct contact with Data transmission and is included in the communication circuit.
  • Page 36 DP-4X MICROPROCESSOR DATA COMMUNICATIONS CIRCUIT EXPLANATION I501 Sub Y Pr/Pb Selector Any input by the time it reaches this IC is in the Y Pr/Pb or Y Cr/Cb state. Selection for the Sub (PinP) picture will be selected by this IC. The PinP Y Pr/Pb Selector IC selects the appropriate input between Components 1 or 2, HDMI 1 or 2, ATSC Tuner, Sub Tuner or Composite Inputs and/or DVD Player (If Provided).
  • Page 37 DP-4X Chassis Microprocessor Data Communications DEFLECTION SDA2 I501 SUB Y Pr/Pb SDA3 SDA3 I011 SUB DEFLECTION Selector SCL2 EEPROM SCL3 SCL3 PDS3 PPD1 SDA2 IB01 I502 SCL1 Vert SDA3 I007 MAIN Y Pr/Pb SDA1 Drive IOO4 Selector EEPROM SCL3 SCL2 Micro SDA2 I401...
  • Page 38 DP-4X AUDIO VIDEO MUTE CIRCUIT EXPLANATION (See DP-4X Series Chassis Audio Video Mute Circuit Diagram for details) There are times in which the main picture and audio must be muted. This can be because of changing channels, Auto Programming and Power On/Off where the noise between stations or Audio pop is unacceptable. Another situation is when the deflection circuit malfunctions.
  • Page 39 DP-4X AUDIO VIDEO MUTE CIRCUIT EXPLANATION (4) AC LOSS DETECTION: AC is monitored by the AC Loss detection circuit. The AC signal generated from PC101 photo coupler on the Power Supply PWB to the connector PPS1 pin (10). This signal is routed and rectified by DY08. This charges up CY93 and through DY08 to charge CY92.
  • Page 40 DP-4X AUDIO VIDEO MUTE CIRCUIT EXPLANATION V MUTE: From Pin 49 of the Microprocessor I004 When its necessary to mute the audio as described on the first page, the Microprocessor outputs a High from pin 49. This high is routed to the Level Shift IC I009 pin 9 as 3.3V. This voltage is level shifted to 5V by this IC and output as V MUTE 1 from pin 11.
  • Page 41 DP-4X Series Chassis AUDIO and VIDEO MUTE Circuit FC H Blk FC V Blk QY28 QY27 PPS1 AC Sig RZ41 DY05 IY04 From FBP In CY92 RZA2 RZ99 RZF7 Rainforest PC101 RZ09 SW 9.3V Power DY08 H Loss Det Supply QY47 QY58 RZF8...
  • Page 42 DP-4X MICROPROCESSOR NTSC SYNC INPUT CIRCUIT EXPLANATION NTSC SYNC CIRCUIT DIAGRAM. (See Microprocessor Sync Input Circuit Diagram for Details) The Microprocessor I004 must have Sync inputs from the Chassis to Lock its generation of OSD, Closed Cap- tion, Customer’s Menu, Service Menu, etc….. The Chassis feeds back this information in the form of Blanking pulses from the Deflection Circuit and Sync from the Video.
  • Page 43 DP-4X SERIES CHASSIS MICROPROCESSOR SYNC INPUT CIRCUIT DIAGRAM I005 Not in the DP-43 Chassis Q407 QV01 QV02 Q003 DM Y Q015 Digital Module Main MAIN NTSC NTSC for Monitor Out Q010 Q012 DM C Q408 QV06 QV07 QV10 Q014 Front Control PWB PFS2 Y 60 Aux 5 Video V3V...
  • Page 44 DP-4X BLANK PAGE “NOTES” BLANK PAGE...
  • Page 45 VIDEO INFORMATION DP-4X CHASSIS INFORMATION SECTION 3...
  • Page 46 DP-4X BLANK PAGE “NOTES” BLANK PAGE...
  • Page 47 DP-4X VIDEO SIGNAL SELECTION PATH EXPLANATION VIDEO SIGNAL SELECTION PATH EXPLANATION. (See Video Select Selection Path Circuit Diagram for Details) The Microprocessor I004 communicates with the Video Selector IC I402 via I C communication. It outputs SDA2 via pin 31 and SCL2 via pin 28. These communications lines arrive at I402 on pins 45 and 46 respectively. This allows the Microprocessor to select the appropriate Video input in accordance to the Customer’s selection.
  • Page 48 DP-4X VIDEO SIGNAL SELECTION PATH EXPLANATION (Continued from page 04-01) Main Picture Outputs from I402: Continued Main Selected Component Out Y Pr/Pb from Pin 56 (Y), pin 54 (Pr) and pin 55 (Pb): • The Main Y Pr/Pb signal is then routed to the Component Selector IC I502. Its inputs are pin 78 (Y), pin 2 (Pr) and pin 80 (Pb).
  • Page 49 DP-4X CHASSIS VIDEO SIGNAL SELECTION PATH Composite Q407 Video or S-Y TUNER PWB PTU2 Main Y / V See DP-4X Chassis Composite Q408 Video Signal Path - 1H NTSC U301 Main Tuner MAIN U302 Sub Tuner Sub TV Main C I502 Main YH DM Y...
  • Page 50 DP-4X COMPOSITE VIDEO SIGNAL PATH - 1H NTSC EXPLANATION COMPOSITE VIDEO SIGNAL PATH –1H NTSC EXPLANATION. (See Composite Video Select Path - 1H NTSC for Details) The inputs to I402 were described in the previous explanation, Video Signal Selection Path. This discussion will take up the signal flow for 1H NTSC video out of I402.
  • Page 51 DP-4X COMPOSITE VIDEO SIGNAL PATH - 1H NTSC EXPLANATION (Continued from page 04-04) PIN 60 SUB (PinP) 1H NTSC VIDEO SIGNAL FLOW. The Composite Video signal is output via pin 60. Then through Q403 to the following buffers; QV06 and QV07.
  • Page 52 DP-4X CHASSIS COMPOSITE 1H NTSC and COMPONENT VIDEO SIGNAL PATH QV03 See Micro. I402 Sync Path ATSC Video Select 1080i Q407 Composite V IV06 Main S-Y Y In Main Y 3D-Y Selector I502 Main Also IV08 Y Pr/Pb Component Y QV02 QV04 QV11...
  • Page 53 DP-4X RGB PROCESSOR CIRCUIT EXPLANATION RGB PROCESSOR CIRCUIT EXPLANATION. (See the RGB Processor Circuit Diagram. for Details) The RGB Process Circuit Diagram shows the continuation of the Video Signal path from the outputs of I502 and I501 that were described in the previous explanation, Component Video Signal Path. This discussion will take up the signal flow from that point.
  • Page 54 DP-4X RGB PROCESSOR CIRCUIT EXPLANATION (Continued from page 04-07) IY04 RGB Processor Outputs; The RGB Processor is responsible for final preparation of the signal before it arrives at the CRTs for display. Brightness, Contrast, Pedestal Level compensation (DC Restoration), Time Compression, Black Peak Expansion, Room Light variance compensation, Color Saturation, Tint adjustments, Sports, Movie and News Modes are all a part of this Chips responsibilities.
  • Page 55 DP-4X Chassis RGB PROCESS Signal Path RAINFOREST IC ATSC To CPT IY04 1080i PWBs QY52 R Out Processor QY54 I502 Main 1080I Flex Bypass G Out Y Pr/Pb QY13 Q506 QY56 Selector Pr 2 In QY16 B Out Q505 Composite Pb 2 In Main Q504...
  • Page 56 DP-4X ABL CIRCUIT EXPLANATION (See ABL Circuit Diagram on the next page for details) The ABL voltage is generated from the Flyback transformer TH01 ABL pin (8). The ABL pull-up resistors are RH27 and RH28. They receive their pull up voltage from the SW +115V which is the B+ line for Deflection cre- ated in the Power Supply.
  • Page 57 DP-4X Chassis A.B.L. Circuit Diagram QY09 SW +9.3V Sub Deflection PWB RY32 RY35 IY04 Rainforest DY02 RY58 RY48 RY44 CY21 CY22 DY01 RY49 SDA2 CY25 IB01 CY24 SCL2 Signal PWB Center DAC LH06 Deflection PWB TH01 DH13 SW +115V RH23 CH17 RH27 30K 1 Gnd...
  • Page 58 DP-4X MAIN and SUB SYNC CIRCUIT DIAGRAM EXPLANATION (See Main/Sub Sync Circuit Diagram for details) This diagram shows the route for sync to the RGB Processor (Rainforest IC) IY04. I502 Main Y Pr/Pb Selector Sync Inputs and Outputs: Any signal that have been selected for the Main Picture, is selected by this IC via I C communications to the Mi- croprocessor SDA2 pin 3 and SCL2 pin 4.
  • Page 59 DP-4X MAIN and SUB SYNC CIRCUIT DIAGRAM EXPLANATION (Continued from page 12) I501 SUB Y Pr/Pb Selector Sync Inputs and Outputs: Any signal that have been selected for the Sub Picture, is selected by this IC via I C communications to the Mi- croprocessor SDA2 pin 3 and SCL2 pin 4.
  • Page 60 DP-4X MAIN/COMPONENT SYNC CIRCUIT DIAGRAM Y In I502 1H NTSC: Cb B In Composite, Main Tuner, From IV08 Pins Y-37, Cb-47, Cr-48 From PMS1 Pins MAIN S-In Y-C Y-37, Cb-39, Cr-41 Cr R In Y In ATSC Y Pr/Pb 1080i Selector Pb In From I402 Pins Y-56, Pb/Cb-55, Pr/Cr-54...
  • Page 61 AUDIO INFORMATION DP-4X CHASSIS INFORMATION SECTION 4...
  • Page 62 DP-4X BLANK PAGE “NOTES” BLANK PAGE...
  • Page 63 DP-4X AUDIO SIGNAL SELECTION PATH EXPLANATION AUDIO SIGNAL SELECTION PATH EXPLANATION. (See Audio Select Selection Path Circuit Diagram for Details) The Microprocessor I004 communicates with the Audio Selector IC I401 via I C communication. It outputs SDA2 via pin 31 and SCL2 via pin 28. These communications lines arrive at I401 on pins 22 and 23 respectively. This allows the Microprocessor to select the appropriate audio input in accordance to the Main Picture displayed by the Customer.
  • Page 64 DP-4X AUDIO SIGNAL SELECTION PATH EXPLANATION (Continued from page 04-01) Outputs from I401: Selected Audio Out from Pin 30 (L) and Pin 29 (R): The Audio Outputs from pin 30 and 29 of I401 are now split into two paths. (1) Main Path: The Left and Right audio arrives at the Main BBE Control Chip IA01 at pins 1 and (2) Secondary Path: If the Main Video Selection is something other than the Digital Module (ATSC) the selected audio is routed back into the Digital Module.
  • Page 65 DP-4X CHASSIS AUDIO SIGNAL SELECTION PATH TUNER PWB PTU2 SDA2 I004 Main U301 Main Tuner Micro Tuner SCL2 Mono Not in the DP-43 Chassis U302 Sub Tuner Tuner DM_R Digital Module DM_L ATSC Tuner Audio In for Q418 Sel_DM_R Dig. Audio Out HDMI 1_R I401 During Non-ATSC...
  • Page 66 DP-4X BLANK PAGE “NOTES” BLANK PAGE...
  • Page 67 DEFLECTION INFORMATION DP-4X CHASSIS INFORMATION SECTION 5...
  • Page 68 DP-4X BLANK PAGE “NOTES” BLANK PAGE...
  • Page 69 DP-4X HORIZONTAL DRIVE CIRCUIT EXPLANATION HORIZONTAL DRIVE CIRCUIT DIAGRAM EXPLANATION: (Use the Horizontal Drive Circuit Diagram for details) CIRCUIT DESCRIPTION When B+ (PSC connector pin 12) arrives at the Rainforest IC IY04 pin (45), horizontal drive is output from pin (37).
  • Page 70 Fig 1 GENERAL INFORMATION: The DP-4X deflection circuit differs from analog Hitachi projection televisions. It utilizes in a sense, two hori- zontal output circuits. One for Deflection and one for High Voltage. This allows for better deflection stabilization and is not influenced by fluctuations of the High Voltage circuit which may cause unacceptable breathing and side pulling of the deflection.
  • Page 71 DP-4X SERIES CHASSIS HORIZONTAL DRIVE CIRCUIT H. Def. Yoke R To Micro. for OSD, Auto Prog, SD, AFC, SW +9.3V H. Def. Yoke G IY04 PDS2 H. Def. Yoke B L704 Osc. HVCO FBP In X501 H.Blk. L704 - L705 Linearity Coils L705 HD In H Sync...
  • Page 72 DP-4X IH01 HIGH VOLTAGE DRIVER IC WAVEFORM AND VOLTAGES IH01 (M62501P) TROUBLESHOOTING TIPS IH01 NORMAL OPERATION: Pin 1 = 6.80V with Color Bar, Varies with Brightness levels. Pin 2 = 11.72V Pin 3 = 0.59V Pin 4 = 2.47V Pin 5 = 1.60V Pin 6 = 10.58V Pin 7 = 0.0V POUT...
  • Page 73 DP-4X SWEEP LOSS DETECTION CIRCUIT EXPLANATION (See Sweep Loss Detection Circuit for details) The key component in the Sweep Loss Detection circuit is QN02. This transistor is normally biased off by the pull up resistor RN08, RN04 and RN09. When the base becomes 0.6V below the emitter, it will be turned on, causing the SW +10.5V to be applied to two different circuits, the SPOT circuit and the High Voltage Drive cir- cuit.
  • Page 74 DP-4X SWEEP LOSS DETECTION CIRCUIT SW+10.5V DN01 CN02 SW+7V RN13 RN12 RN11 RN09 RN04 Vertical Blanking DN08 DN05 QN05 From Pin 8 I601 QN04 RN15 CN04 V. Blk. DN06 CN05 RN14 DN07 RN08 24V P/P RN05 QN02 CN03 RN06 DN04 High Voltage RN10 Driver IC...
  • Page 75 DP-4X VERTICAL OUTPUT CIRCUIT EXPLANATION (See the Vertical Output Circuit for details) I601 B+: The Vertical Output IC I601 requires SW+28V to operated. This voltage is supplied from the Power Supply. The output for the SW+28V pulse is from pin 16 of TP01. Its then rectified by DP30, filtered by CP32, LP30, CP34. The SW +28V is routed through the Vertical B+ Excessive Current Sensor R629, Q604 to pin 7 of I601.
  • Page 76 DP-4X CHASSIS VERTICAL OUTPUT CIRCUIT DIAGRAM Power Sub Deflection PWB PDD1 PROT_OVP Supply PWB IB01 R626 V.NF SW +28V QB04 To Dyn Focus R632 VP Para V. Def. Yoke B PDS2 Q604 D608 V Drive From Pin 35 V In of IY04 R627 R631...
  • Page 77 DP-4X SIDE PINCUSHION CIRCUIT EXPLANATION (See the Side Pincushion Circuit Diagram for details) Due to the nature of deflection, the sides of the picture has a tendencies to pull in similar to an hour glass. The Side pincushion circuit is responsible for manipulating deflection to compensate. This is accomplished by super imposing a vertical parabolic waveform on the DC voltage utilized for Horizontal Size.
  • Page 78 DP-4X SIDE PINCUSHION CIRCUIT DIAGR AM Pin 10 of PPD1 can vary from 4.25V~6V SDA1 SCL1 PPD1 RB11 Vert Drive Vert Drive From Rainforest IY04 pin 35 SW +115V IB01 V. NF R706 V. NF From Vertical Yoke Charge Capacitor 108V V Saw From Vertical Drive...
  • Page 79 DIGITAL CONVERGENCE INFORMATION DP-4X CHASSIS INFORMATION SECTION 6...
  • Page 80 DP-4X BLANK PAGE “NOTES” BLANK PAGE...
  • Page 81 DP-4X DIGITAL CONVERGENCE INTERFACE CIRCUIT EXPLANATION See Digital Convergence Interconnection Circuit Diagram for details. The Digital Convergence circuit is responsible for maintaining proper convergence of all three colors being pro- duced by the CRTs. Many different abnormalities can be quickly corrected by running Magic Focus. The Digital convergence Interconnect Diagram depicts how the Digital Convergence Circuit is interfaced with the rest of the Projection’s circuits.
  • Page 82 DP-4X DIGITAL CONVERGENCE INTERFACE CIRCUIT EXPLANATION data represents a specific correction signal for that specific location. When the Service Technician makes any adjustment, the new information must be stored in memory, EEPROM. The EEPROM only stores the 117 differ- ent adjustment points data, the SRAM interpolates to come up the additional 139 adjustment points for a total of 256 per color.
  • Page 83 DP-4X DIGITAL CONVERGENCE INTERFACE CIRCUIT EXPLANATION EXPLANATION OF THE DIGITAL CONVERGENCE INTERCONNECT DIAGRAM: See Digital Convergence Interconnection Circuit Diagram for details. INFRARED RECEIVER: During normal operations, the IR receiver directs its signal to the Main Microprocessor where it interprets the incoming signal and performs a predefined set of operations.
  • Page 84 DP-4X DIGITAL CONVERGENCE INTERFACE CIRCUIT EXPLANATION MICROPROCESSOR: The Microprocessor is only involved in the Digital Convergence circuit related to disabling IR (Infrared Remote Control Signals). When the DCU is put into the Digital Convergence Adjustment Mode (DCAM) or Magic Fo- cus, the Microprocessor ignores IR pulses.
  • Page 85 DP-4X DIGITAL CONVERGENCE INTERFACE CIRCUIT EXPLANATION ever, any manual adjustment data is lost. If 9 Point Manual Adjustment was Selected: This If 117 Point Manual Adjustment was Selected: represents the Grid Display. This represents the Grid Display. After making any adjustment in either 9 Point or 117 Point, press the EXIT key. Then the Manual Adjustment Mode Menu will appear.
  • Page 86 DP-4X CHASSIS "DIGITAL CONVERGENCE" INTERCONNECTION CIRCUIT DIAGRAM I004 MAG SW In (Lo) Signal PWB Rainforest IY05 IY04 Q032 Q031 QY34 DCU IR Out OSD B QY56 OSD B OSD B QY17 QY32 OSD G DCU IR Sel OSD G OSD G QY29 I009 OSD R...
  • Page 87 DCU mode. Hold down the ENT key and DVD CBL STB PVR AMP Remote begins in TV mode. enter 1345 (Hitachi Pre-Code). SOURCE ACCESS While holding the "ENT" key, press "MENU" then "INFO" keys. RASTER POSITION TV LED will blink 3 times.
  • Page 88 DCU PHASE NOTE: The 3X3 mode can only be entered after the RAM is NOTE: DCU Phase cleared. Press With Power Off press and hold HITACHI then the EXIT key the Service Only switch. Then Press the Power Button. PAGE 06-08...
  • Page 89 DP-4X ADJUSTMENT MARKER ON AND OFF CONTROL ADJUSTMENT MARKER ON AND OFF: Remote must be in Digital Convergence Adjustment Mode. See page 08-18. This function can improve view of adjustment point during Digital Convergence Adjustment Mode (DCAM). When the Service Only switch on the Def/Convergence PWB is pressed, the Digital Convergence Adjustment Grid appears.
  • Page 90 DP-4X ADJUSTMENT MARKER MOVEMENT USING CH DW KEY ADJUSTMENT MARKER MOVES CLOCKWISE SPIRALING OUT BY CH DW KEY: Remote must be in Digital Convergence Adjustment Mode. See page 08-18. As always, the adjustment procedure should begin in the Center of the screen and work outward in a Clock- wise spiral to the outside of the screen This give the best over all adjustment.
  • Page 91 DP-4X ADJUSTMENT MARKER MOVEMENT USING CH DW KEY ADJUSTMENT MARKER MOVES CLOCKWISE SPIRALING OUT BY CH DW KEY: (Continued from Previous Page) As can be seen in the Figure below, (See Figure 3) this identifies the first 25 stopping positions where the ad- justment Point will stop with each press of the CH DW key on the Remote Control.
  • Page 92 CONVERGENCE USING OUTSIDE SIGNAL SOURCE Remote must be in Digital Convergence Adjustment Mode. See page 08-18. By superimposing the digital cross hatch on the main picture or the adjustment point on the main picture, ad- justments can be made that are more specific to errors seen while observing the main picture instead of only the cross hatch pattern.
  • Page 93 MAGIC FOCUS ERROR CODES FOR THE DP-4X CHASSIS CONVERGENCE ERRORS: Remote Must be in DCAM. See page 08-18. If an error message or code appears while performing MAGIC FOCUS or initialize (ASPECT) then Digital Convergence Adjustment Mode, follow this confirmation and repair method. 1) Turn on Power and receive any signal.
  • Page 94 DP-4X BLANK PAGE “NOTES” BLANK PAGE...
  • Page 95 CHASSIS PICTURES DP-4X CHASSIS INFORMATION SECTION 07...
  • Page 96 DP-4X BLANK PAGE “NOTES” BLANK PAGE...
  • Page 97 DP-4X CHASSIS PICTURES (08) DP-4X Main Chassis Picture This picture shows the DP-4X Main Chassis. The main difference from previous chassis is the addi- tion of a Convergence Output PWB, Tuner PWB, Sub Deflection PWB and HDMI Module. Digital Module Tuner PWB Antenna Convergence...
  • Page 98 DP-4X CHASSIS PICTURES (08) DP-4X Main Chassis Picture Continued. This picture shows a closer view of the DP-4X Deflection PWB. The main difference from previous chassis is the addition of a Convergence Output PWB and the Sub Deflection Module. The Sub De- flection Module contains the Vertical Drive generation IC and the Side Pin Op Amps.
  • Page 99 DP-4X CHASSIS PICTURES (08) DP-4X Main Chassis Picture Continued. This picture shows a close up view of the DP-4X Digital Convergence Unit (DCU). p/n CS00831A. Digital Convergence Unit (DCU) This picture shows a close up view of the DP-4X Sub (Signal) Power Supply. This PWB is plugged directly into the Signal PWB and supplies the low voltage power supplies needed for the chassis.
  • Page 100 DP-4X CHASSIS PICTURES (08) DP-4X Main Chassis Picture Continued. This picture shows a close up view of the DP-4X Tuner PWB. This PWB contains the Main and Sub NTSC Tuners. Tuner PWB Main and Sub NTSC Tuners HDMI COMPARED TO DVI: This picture shows a close up view of and HDMI to DVI adapter cable.
  • Page 101 DP-4X CHASSIS PICTURES This picture shows a close up view of the DP-43 Rear Panel. (1) ANTENNA INPUTS: Antenna A: feeds the Main Tuner and Sub (PinP) Tuner. When switched to Antenna B, the RF from Antenna A is output "Out To Converter" The Main Tuner now receives it's RF input from Antenna B.
  • Page 102 DP-4X CHASSIS PICTURES This picture shows a close up view of the DP-45 Rear Panel. (1) ANTENNA INPUTS: Note that the main difference from previous models is that there are only to F59 (RF) inputs. Antenna A feeds the Main Tuner, Sub (PinP) Tuner and the ATSC Tuner. When switched to Antenna B, the RF feeds the Main Tuner and the ATSC Tuner.
  • Page 103 DP-4X CHASSIS PICTURES This picture shows a close up view of the DP-47 Rear Panel. (1) ANTENNA INPUTS: Note that the main difference from previous models is that there are only to F59 (RF) inputs. Antenna A feeds the Main Tuner, Sub (PinP) Tuner and the ATSC Tuner. When switched to Antenna B, the RF feeds the Main Tuner and the ATSC Tuner.
  • Page 104 DP-4X BLANK PAGE “NOTES” BLANK PAGE...
  • Page 105 DP-4X CHASSIS ADJUSTMENTS DP-4X CHASSIS INFORMATION SECTION 08...
  • Page 106 DP-4X BLANK PAGE “NOTES” BLANK PAGE...
  • Page 107 DP-4X SERVICE ADJUSTMENT ORDER “PREHEAT BEFORE BEGINNING” Adjustment Index --------------------------------------------------------------------------------------------- 08-01 Adjustment Magnet Locations ---------------------------------------------------------------------------- 08-02 ORDER OF ADJUSTMENT: 01 Pre HEAT (30 Minutes) ---------------------------------------------------------------------------------- 08-03 02 Cut Off ------------------------------------------------------------------------------------------------------ 08-04 03 Pre Focus Lens and Static ----------------------------------------------------------------------------- 08-05 04 DCU Phase Data Setting ------------------------------------------------------------------------------- 08-06 05 Horz.
  • Page 108 DP-4X BLANK PAGE “NOTES” BLANK PAGE...
  • Page 109 DP-4X MAGNET AND YOKE LOCATION DP-4X MAGNETS Adjustment Points FRONT GREEN BLUE (1) Centering magnet RED (5) Beam Alignment magnets (2) Centering magnet GREEN (6) Focus Block Assembly RED, GREEN & BLUE (3) Centering magnet BLUE FOCUS CONTROLS (4) Beam Form Magnets Also: SCREEN CONTROLS for RED, GREEN &...
  • Page 110 DP-4X CHASSIS PRE-HEAT RUN ADJUSTMENTS PRESET EACH 3. Video Controls in Factory Allow set to operate at least Reset condition. ADJUSTMENT VR TO 30 Minutes before begin- CONDITION AS SHOWN: ning adjustments. 1) Screen VR on Focus Pack. SCREEN VR Pre Set fully counter clockwise.
  • Page 111 DP-4X CHASSIS CUT-OFF (SCREENS) ADJUSTMENT ADJUSTMENT 3. Adjust any Screen VR. Screen VR should be PREPARATION: • turned clockwise gradually Pre Heat Run should be until that particular color is finished. • barely visible. Room Light should be minimal. 4. Repeat for the other two colors.
  • Page 112 DP-4X CHASSIS PRE-FOCUS ADJUSTMENT ADJUSTMENT 2) Adjust the Focus VR for Green until Focus is PREPARATION: A) Pre Heat Run should be achieved. finished. (A Fine Adjustment will be made later.) NOTE: 3) Repeat for Blue. • PTSR connector on RED FOCUS ADJUSTMENT: 1) Short the 2pin sub- 4) Repeat for Red.
  • Page 113 DP-4X CHASSIS DCU CROSSHATCH PHASE ADJUSTMENT Adjustment Preparation: • Cut Off adjustment should 6) Adjust data value using 11)Press the Service Only be finished. the keys indicated in the Switch to return to Nor- • Video Control: Brightness chart, until the data mal Mode.
  • Page 114 DP-4X HORIZONTAL CENTER ADJUSTMENT (COARSE) Adjustment Preparation: Adjustment Procedure NOTE: To enter the I C Bus • Video Controls in the alignment menu, with Power (1080i 16:9) HD MODE: Off, press the INPUT button Factory Reset state. 1) Receive a 1080i and hold it down, then press Adjustment Procedure (HDTV) crosshair...
  • Page 115 DP-4X CHASSIS TILT (RASTER INCLINATION) ADJUSTMENT Adjustment Preparation: Adjustment Procedure : BLUE: • The set can face any direc- 6) Remove cover or PTS GREEN: tion. 1) Apply covers to the RED short from BLUE and • Receive the Cross-Hatch and BLUE lenses or short cover the RED CRT.
  • Page 116 DP-4X CHASSIS BEAM ALIGNMENT ADJUSTMENT Preparation for adjustment: 2) Put Green (G) tube beam move, repeat steps [2] • Pre Heat, Pre-optical focus, alignment magnet to the can- through [6]. cel state as shown in Figure 8) Conduct beam alignment for DCU Phase Data, H.
  • Page 117 DP-4X CHASSIS RED AND BLUE RASTER OFFSET ADJUSTMENT INFORMATION: Raster Offset is necessary to conserve Memory allocation. It is very important to remember that the Red is offset Left of Center and Blue is offset Right of center. Please use the following information to accurately offset Red and Blue from center. Also see Overlay Dimensions for further details.
  • Page 118 DP-4X BEAM FORM ADJUSTMENT BEAM SHAPE (FORM) Preparation for adjustment Adjustments procedure: 1) Green CRT beam shape 5) Also adjust the Red and Blue • IMPORTANT: Screen format adjustment. CRT beam shapes according 2) Short-circuit 2P sub-mini to the steps (1) to (4). should be “NORMAL“.
  • Page 119 DP-4X SIDE PIN ADJUSTMENT ADJUSTMENT ADJUSTMENT PROCEDURE: 3) Choose EW PARA (Side Pin) item by using PREPARATION: 1) Press the SERVICE the Remote's thumb • ONLY button on the Receive an NTSC sig- stick down button. DEF/CONV PWB and nal. the MUTE key on •...
  • Page 120 DP-4X VERTICAL SIZE ADJUSTMENT If you are continuing from previous adjustment (Side Pin) begin at step (3). VERTICAL SIZE: 5) Use the Thumbstick to 1) Receive an NTSC sig- scroll down to V Size. nal. 6) Adjust V Size Data 2) With Power on, press using the Thumbstick NOTE:...
  • Page 121 DP-4X HORIZONTAL SIZE ADJUSTMENT If you are continuing from previous adjustment (V Size) begin at step (3). HORIZONTAL SIZE: 1) Receive an NTSC 4) Press the MENU button signal. to remove Red and NOTE: 2) With Power Off, press Blue. Centering magnet may the Service Only switch 5) Use the Thumbstick to...
  • Page 122 DP-4X TRAPEZOID ADJUSTMENT If you are continuing from previous adjustment (H Size) begin at step (3). ADJUSTMENT PREPARA- ADJUSTMENT PROCEDURE: 4) Adjust TRAPEZOID as TION: follows by using the 1) SERVICE button on the thumb stick left and • Deflection PWB is Receive an NTSC sig- right.
  • Page 123 DP-4X LENS FOCUS ADJUSTMENT Preparation for adjust- ample.) 4) After completing optical 2) (See Figure 1) Loosen focus, tighten the fixing ment the fixing screw on the screws for each lens. • Receive the Cross-hatch lens assembly so that 5) When adjusting the pattern signal.
  • Page 124 DP-4X STATIC FOCUS ADJUSTMENT ADJUSTMENT FOCUS ADJUSTMENT: PREPARATION: • Pre Heat Run should be 1) Short the 2pin sub- 2) Adjust the Focus VR for finished. miniature connector on Red until maximum the CRT PWB (PTS), to Focus is achieved. remove any color not being adjusted and 3) Repeat for Blue and...
  • Page 125 DCAM will toggle in the following hold down the ENT key and enter 1345 order, Normal DCU Grid, Turns of Color to select Hitachi codes. or Colors not being adjusted (except Green), Picture and DCU Grid, Picture FOR CLU-4341UG2...
  • Page 126 When this happens, most of the time it is 3) READ FROM OLD ROM DATA: because some critical adjustments were 4) In any Hitachi Digital convergence set, overlooked or skipped. the Old ROM data can be re-read to The below adjustments are very critical...
  • Page 127 DCU mode. Hold down the ENT key and DVD CBL STB PVR AMP Remote begins in TV mode. enter 1345 (Hitachi Pre-Code). SOURCE ACCESS While holding the "ENT" key, press "MENU" then "INFO" keys. RASTER POSITION TV LED will blink 3 times.
  • Page 128 DCU PHASE NOTE: The 3X3 mode can only be entered after the RAM is NOTE: DCU Phase cleared. Press With Power Off press and hold HITACHI then the EXIT key the Service Only switch. Then Press the Power Button. PAGE 08-21...
  • Page 129 DP-4X DIGITAL CONVERGENCE OVERLAY DIMENSIONS NOTE: Aspect may not be correct but dimensions are correct. 51 IINCH DIGITAL CONVERGENCE OVERLAY DIMENSIONS 51F510 DP-43 Chassis and 51S715 DP-47 Chassis OVERLAY DIMENSIONS 1129 H. SIZE 19.7 90.8 90.8 90.8 90.8 90.8 90.8 90.8 90.8 90.8...
  • Page 130 DP-4X DIGITAL CONVERGENCE OVERLAY DIMENSIONS NOTE: Aspect may not be correct but dimensions are correct. 57 IINCH DIGITAL CONVERGENCE OVERLAY DIMENSIONS 57F510 DP-43 Chassis and 57S715 DP-47 Chassis OVERLAY DIMENSIONS 1262 H. SIZE 22.0 101.5 101.5 101.5 101.5 101.5 101.5 101.5 101.5 101.5 101.5 22.0...
  • Page 131 DP-4X DIGITAL CONVERGENCE OVERLAY DIMENSIONS NOTE: Aspect may not be correct but dimensions are correct. 65 IINCH DIGITAL CONVERGENCE OVERLAY DIMENSIONS 65F710 DP-45 CHASSIS OVERLAY DIMENSIONS 1439 H. SIZE 25.3 115.7 115.7 115.7 115.7 115.7 115.7 115.7 115.7 115.7 115.7 19.7 38.6 52.1...
  • Page 132 DP-4X CONVERGENCE USING OUTSIDE SIGNAL SOURCE Remote Must be in Digital Convergence Adjustment Mode see page 08-18. To assist the Technician in performing Digital Convergence Adjustments and to actually be able to make ad- justments while observing the actual picture and in case there an error seen between the DCU Grid and the Main picture, the DP-4X Chassis as added the following convergence adjustment benefit.
  • Page 133 DP-4X CHASSIS MAGIC FOCUS “CHARACTER SET UP” IMPORTANT: TABLE 1 DP-4X Remote MUST BE IN Digital Convergence Adjustment Mode. Parameter Normal See page 08-18 ADJ. DISP DEMO WAIT NOTE: This instruction should be applied when a new DCU is being INT.
  • Page 134 DP-4X CHASSIS MAGIC FOCUS “PATTERN SET UP” IMPORTANT: correction data. Press the 3) Use the 6 Key to rotate Remote MUST BE IN Digital Service Only button to bring Arrow. Arrow rotates clock- up Internal Crosshatch.) Convergence Adjustment Mode. wise with each press on the 6 Adjustment Procedure: Key.
  • Page 135 DP-4X CHASSIS RASTER POSITION ADJUSTMENT 2) Use the following Keys to IMPORTANT: be accessed in this select a color to adjust. Remote MUST BE IN Digital mode. • Convergence Adjustment Mode. INFO : REEN • 0 : RED 2) Use the Thumbstick to •...
  • Page 136 DP-4X DIGITAL CONVERGENCE ADJUSTMENT PROCEDURE 2) Three adjustment stopping 7) Press the Volume Down IMPORTANT: point modes are available. Remote MUST BE IN Digital wheel (MUTE) to return to • the DCU Grid. Convergence Adjustment Mode. 3X3 Mode Press INFO 8) INITIALIZE THE key 5 times.
  • Page 137 MAGIC FOCUS ERROR CODES FOR THE DP-4X CHASSIS CONVERGENCE ERRORS: Remote Must be in DCAM. See page 08-18. If an error message or code appears while performing MAGIC FOCUS or initialize (ASPECT) then Digital Convergence Adjustment Mode, follow this confirmation and repair method. 1) Turn on Power and receive any signal.
  • Page 138 DP-4X BLUE DE-FOCUS ADJUSTMENT Adjustment Preparation: Adjustment Procedure • Video Controls should be 1) Receive any NTSC cross- Factory Reset Condition. hatch signal. 2) Turn the B FOCUS VR until Blue is Focused. • See Figure 2 1) Adjust BLUE defocus according to the following specifications.
  • Page 139 DP-4X SUB BRIGHTNESS ADJUSTMENT Preparation for adjustment Sub Brightness: • Start adjustment 20 min- Go to I C ADJ. Mode. utes or more after the With power Off, press power is turned on. INPUTS and POWER • CUT OFF adjustment buttons at the same time, should be finished.
  • Page 140 DP-4X WHITE BALANCE ADJUSTMENT Adjustment Conditions: set to (7F). Off and Green Cut Off ad- • • Cut Off and Blue Defocus Set Color Temperature to justment within I C Service must be complete. Menu (10800 K) HIGH on Customer’s Menu. •...
  • Page 141 DP-4X WHITE BALANCE ADJUSTMENT FLOW CHART START CUT OFF ADJUSTMENT BLUE DEFOCUS ADJUSTMENT SUB BRIGHT ADJUSTMENT ADJUST Hi LIGHT W/B Repeat two or three times ADJUST Lo LIGHT W/B until no adjustment is necessary. SUB BRIGHT ADJUSTMENT CHECK If NOT OK Lo LIGHT W/B Hi LIGHT W/B If OK...
  • Page 142 DP-4X PinP (SUB) PICTURE AMPLITUDE ADJUSTMENT Preparation for Adjustment Adjustment Procedure: • 1. Go to I C adjustment Mode. Sub Brightness adjustment should be fin- 2. Scroll down to "SUB CONT". ished. • Press the "PIP" button on the Remote Con- Start adjustment 20 minutes after the trol.
  • Page 143 DP-4X HORIZONTAL CENTER ADJUSTMENT (FINE) Adjustment Preparation: • Video Controls at Factory Reset Condition. • Convergence Adjustment should be complete. Adjustment Procedure (1080i 16:9) HD Adjustment Procedure NORMAL MODE: MODE: 1) Receive an (ATSC 480p 16:9) signal. 1) Receive a 1080i (HDTV) signal. 2) Enter the I C Service Menu* and 2) Press the SERVICE ONLY switch...
  • Page 144 DP-4X BLANK PAGE “NOTES” BLANK PAGE...
  • Page 145 THINGS YOU SHOULD KNOW This Section must be downloaded separately due to the fact that it changes so often. Please go to our web site http://www.hitachiserviceusa.com and download the DP-4X Chassis Section 09 to get the most current version. DP-4X CHASSIS INFORMATION SECTION 09...
  • Page 146 DP-4X BLANK PAGE “NOTES” BLANK PAGE...
  • Page 147 SERVICE POLICY FOR THE DP-4X CHASSIS DP-4X CHASSIS INFORMATION SECTION 10...
  • Page 148 DP-4X BLANK PAGE “NOTES” BLANK PAGE...
  • Page 149 The Service Policy for the models on the right is; DP-47 "Board Level Repair". See below for PWB parts list. 57S715 It's not necessary for a PWB to be replaced if there can be found a simple repair. Ser- 51S715...
  • Page 150 DP-4X SERVICE POLICY Chassis Part Numbers Main Chassis UE23122 Comes with Tuner PWB, CRT PWBs, Front Control PWB, Flex Converter, HDMI Module, Digital Module, Magic Focus Interface PWB and Audio Outputs. Signal PWB w/o power supply. JT24472 Comes with Tuner PWB, Flex Converter, HDMI Module, Digital Module and Audio Outputs.
  • Page 151 DP-4X BLANK PAGE “NOTES” BLANK PAGE...
  • Page 152 DP-4X BLANK PAGE “NOTES” BLANK PAGE...

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