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JVC HD-56ZR7J Service Manual
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JVC HD-56ZR7J Service Manual

D-ila projection television
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SERVICE MANUAL
D-ILA PROJECTION TELEVISION
3
YA385
2006
HD-56ZR7J, HD-56ZR7U,
HD-70ZR7J, HD-70ZR7U
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-39

TABLE OF CONTENTS

COPYRIGHT © 2006 Victor Company of Japan, Limited
BASIC CHASSIS
RP4
No.YA385
2006/3

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Summary of Contents for JVC HD-56ZR7J

  • Page 1: Table Of Contents

    SERVICE MANUAL D-ILA PROJECTION TELEVISION YA385 2006 HD-56ZR7J, HD-56ZR7U, HD-70ZR7J, HD-70ZR7U BASIC CHASSIS TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 SPECIFICATION Contents Items HD-56ZR7J HD-56ZR7U HD-70ZR7J HD-70ZR7U × × × × × × Dimensions ( W 131.8 cm 96.8 cm 43.9 cm 162.6 cm 116.7 cm 51.9 cm Mass 42 kg 69 kg TV RF System CCIR ( I )

  • Page 3: Precaution

    SECTION 1 PRECAUTION SAFETY PRECAUTIONS (1) The design of this product contains special hardware, (6) Isolation Check (Safety for Electrical Shock Hazard) many circuits and components specially for safety After re-assembling the product, always perform an purposes. For continued protection, no changes should be isolation check on the exposed metal parts of the cabinet made to the original design unless authorized in writing by (antenna terminals, video/audio input and output terminals,...
  • Page 4 INSTALLATION LAMP UNIT HANDLING CAUTION 1.2.1 HEAT DISSIPATION If the heat dissipation vent behind this unit is blocked, cooling LAMP UNIT : TS-CL110EAA efficiency may deteriorate and temperature inside the unit will rise. The temperature sensor that protects the unit will be activated when internal temperature exceeds the predetermined level and power will be turned off automatically.
  • Page 5 1.3.3 LAMP UNIT REPLACEMENT 1.3.6 PRECAUTION FOR REPLACEMENT (1) The lamp replacement message will appear when need to • Do not replace the LAMP UNIT immediately after the projector change the lamp. After replace the lamp, need to reset the has been used.
  • Page 6 SERVICE PARTS KIT INSTRUCTIONS SCREEN HANDLING CAUTIONS Due to the character of this product, these OPTICAL /DRIVE 1.5.1 SCREEN STORAGE ASS'Y are prepared. Store the SCREEN ASS'Y in a standing position in order to avoid Please note these OPTICAL/DRIVE ASS'Y when replacing or deformation.

  • Page 7: Specific Service Instructions

    ZOOM You can enjoy sounds with a widerambience. This function can change the screen size according to the picture aspect ratio. MAIN DIFFERENCE LIST Item HD-56ZR7J HD-56ZR7U HD-70ZR7J HD-70ZR7U TV RF System CCIR ( I ) CCIR (B/G, I, D/K, L)
  • Page 8 21-PIN EURO CONNECTOR (SCART) : EXT-1 / EXT-2 / EXT-3 Pin No. Signal designation Matching value EXT-1 EXT-2 EXT-3 AUDIO R output 500mV(rms) (Nominal), Low impedance Used (TV OUT) Used (LINE OUT) Not used AUDIO R input 500mV(rms) (Nominal), High impedance Used (R1) Used (R2) Used (R3)
  • Page 9 TECHNICAL INFORMATION 2.5.1 D-ILA DEVICE SPECIFICATION 2.5.4 D-ILA DEVICE STRUCTURE Item Content R / G / B DEVICE (SIDE VIEW) H:1312 × V:800 Resolution Glass Pixel number about 1050000 substrate H :12.0µm × V :12.0µm Pixel size Aspect ratio 16:9 Incident light Contrast ratio 1000:1...
  • Page 10 2.5.5 MAIN CPU PIN FUNCTION [IC7501 : DIGITAL SIGNAL PWB ASS'Y] Pin name Function Pin name Function Test purpose I/O Program ROM data for main CPU Test purpose I/O Program ROM data for main CPU Test purpose I/O Program ROM data for main CPU Test purpose VSS33 P2.8...
  • Page 11 2.5.6 SUB (CHASSIS) CPU PIN FUNCTION [IC7001 : DIGITAL SIGNAL PWB ASS'Y] Pin name Function Pin name Function LCD_PRO Not used BS_TXD Not used : Data transmission for digital tuner communication P_MU Picture muting [Muting = H] BS_RXD Not used : Data receive for digital tuner communication FUNC_LED Not used CD_INT...

  • Page 12: Disassembly

    SECTION 3 DISASSEMBLY DISASSEMBLY PROCEDURE CAUTION AT DISASSEMBLY: • Be sure to perform the SYSTEM SETTEING, at the end of the procedure. • Make sure that the power cord is disconnected from the outlet. • Pay special attention not to break or damage the parts. •...
  • Page 13 SCREEN BLOCK SCREEN BRACKET FRONT BRACKET SCREEN ASS'Y BACK COVER SCREEN BLOCK FRONT PANEL MAIN BODY CENTRE COVER SPEAKER FRONT LED SPEAKER SPEAKER GRILL FRONT Fig.1 (No.YA385)1-13...
  • Page 14 3.1.1.8 REMOVING THE MIRROR (Fig.2) 3.1.1.10 REMOVING THE SUPPORT HOLDER (Fig.2) • Remove the SPEAKER GRILL. • Remove the SPEAKER GRILL. • Remove the FRONT PANEL. • Remove the FRONT PANEL. • Remove the SCREEN BLOCK. • Remove the SCREEN BLOCK. (1) Remove the 4 screws [A] attaching the MIRROR HOLDER (1) Remove the 2 screws [E].
  • Page 15 FILTER COVER FILTER BACK COVER MIRROR HOLDER(top) MIRROR HOLDER MIRROR (side) HOLDER MIRROR (side) FILTER FILTER COVER SIDE CONTROL MAIN BODY SIDE CONTROL BASE SPEAKER SUPPORT HOLDER SPEAKER FRONT Fig.2 (No.YA385)1-15...
  • Page 16 3.1.2 FRONT SIDE DISASSEMBLY [HD-70ZR7] 3.1.2.1 REMOVING THE SPEAKER GRILL (Fig.3) 3.1.2.7 REMOVING THE SCREEN BLOCK (Fig.3) (1) Remove the 1 screw [A] and the 1 screw [B]. • Remove the SPEAKER GRILL. (2) Remove the SPEAKER GRILL. • Remove the CENTRE PANEL. •...
  • Page 17 SCREEN BLOCK SCREEN ASS'Y SCREEN BRACKET FRONT BRACKET BACK COVER FRONT PANEL MAIN BODY SCREEN BLOCK SPEAKER FRONT CENTRE COVER LED PWB SPEAKER GRILL CENTRE PANEL SPEAKER SPEAKER GRILL FRONT Fig.3 (No.YA385)1-17...
  • Page 18 3.1.2.9 REMOVING THE MIRROR (Fig.4) 3.1.2.13 REMOVING THE BACK COVER (Fig.4) • Remove the SPEAKER GRILL. • Remove the SPEAKER GRILL. • Remove the CENTRE PANEL. • Remove the CENTRE PANEL. • Remove the FRONT PANEL. • Remove the FRONT PANEL. •...
  • Page 19 BACK COVER MIRROR HOLDER STOPPER MIRROR HOLDER(top) MIRROR HOLDER BRACKET(top) MIRROR MIRROR HOLDER HOLDER (side) (side) MIRROR BACK COVER BRACKET (REAR) SIDE CONTROL BACK COVER BRACKET (L/R) SIDE CONTROL BASE BACK COVER BRACKET (FRONT) MAIN BODY SPEAKER BOX FRONT SPEAKER BOX Fig.4 (No.YA385)1-19...
  • Page 20 3.1.3 REAR SIDE DISASSEMBLY 3.1.3.1 REMOVING THE LAMP UNIT (Fig.5) 3.1.3.4 REMOVING THE POWER PWB (Fig.5) (1) Remove the 1 screw [A]. • Remove the LAMP COVER. (2) Remove the LAMP COVER. • Remove the BODY COVER. (3) Remove the 2 screws [B]. •...
  • Page 21 3.1.3.9 REMOVING THE REGULATOR PWB (Fig.5) • Remove the LAMP COVER. • Remove the BODY COVER. • Remove the BODY BRACKET. • Remove the MAIN UNIT. • Remove the AV TERMINAL BOARD. • Remove the REAR JACK PWB. • Remove the PWB HOLDER. •...
  • Page 22 LAMP UNIT MAIN BODY LAMP COVER FRONT BODY BRACKET RECEIVER PWB ANALOG SIGNAL ANALOG PWB BRACKET DIGITAL SIGNAL EARTH WIRE REGULATOR PWB HOLDER REAR JACK SHIELD COVER AV TERMINAL BOARD ANTENNA TERMINAL POWER PWB MAIN UNIT BODY COVER POWER CORD Fig.5 1-22 (No.YA385)
  • Page 23 3.1.3.11 REMOVING THE LAMP COVER SW PWB (Fig.6) 3.1.3.16 REMOVING THE LAMP COOLING FAN-2 (Fig.6) • Remove the LAMP COVER. • Remove the LAMP COVER. • Remove the BODY COVER. • Remove the BODY COVER. • Remove the BODY BRACKET. •...
  • Page 24 3.1.3.18 REMOVING THE MAIN DRIVE PWB (Fig.6) • Remove the LAMP COVER. • Remove the BODY COVER. • Remove the BODY BRACKET. • Remove the MAIN UNIT. (1) Slide the TOP DUCT PLATE and remove it. (2) Remove the 1 screw [Q] and the 1 screw [R]. (3) Remove the TOP DUCT.
  • Page 25 OPTICAL / DRIVE ASS’Y REMOTE FRONT SENSOR TOP DUCT PLATE THERMOSTAT LAMP BALLAST BLOCK LAMP BALLAST TOP DUCT DUCT LAMP COOLING LAMP FAN DUCT FAN-1 SHIELD COOLING LAMP CASE BALLAST HOLDER UNIT MAIN DRIVE LAMP LAMP BALLAST COOLING BRACKET FAN-2 COOLING FAN BRACKET TEMP.
  • Page 26 MEMORY IC REPLACEMENT • This model uses the memory IC. • This memory IC stores data for proper operation of the video and drive circuits. • When replacing, be sure to use an IC containing this (initial value) data. 3.2.1 MEMORY IC LIST Simbol Number of pins Mounting PWB...
  • Page 27 3.2.4 SETTINGS OF FACTORY SHIPMENT 3.2.4.1 BUTTON OPERATION 3.2.4.2 REMOTE CONTROL DIRECT OPERATION Setting item Setting position Setting item Setting position POWER CHANNEL CHANNEL VOLUME VOLUME ZOOM AUTO TV/AV 3D SOUND 3.2.4.3 REMOTE CONTROL MENU OPERATION (1) PICTURE (3) FEATURES Setting item Setting position Setting item...
  • Page 28 REPLACEMENT OF CHIP COMPONENT 3.3.1 CAUTIONS (1) Avoid heating for more than 3 seconds. (2) Do not rub the electrodes and the resist parts of the pattern. (3) When removing a chip part, melt the solder adequately. (4) Do not reuse a chip part after removing it. 3.3.2 SOLDERING IRON (1) Use a high insulation soldering iron with a thin pointed end of it.

  • Page 29: Adjustment

    SECTION 4 ADJUSTMENT ADJUSTMENT PREPARATION BASIC OPERATION OF SERVICE MODE (1) The adjustment using the REMOTE CONTROL UNIT is 4.4.1 HOW TO ENTER THE SERVICE MODE made on the basis of the initial setting values. The set- (1) Press the [INFORMATION] key and [MUTING] key ting values which adjust the screen to the optimum simultaneously, to enter the SERVICE MODE.
  • Page 30 4.4.4 ADJUSTMENT MODE This mode is used to adjust the VIDEO CIRCUIT. 4.4.4.1 HOW TO ENTER THE ADJUSTMENT MODE When the SERVICE MENU SCREEN of SERVICE MODE is displayed, press [1] key to enter the ADJUSTMENT MODE (Fig.2). 4.4.4.2 DESCRIPTION OF STATUS DISPLAY OF ADJUSTMENT MODE ADJUSTMENT MODE (3) PICTURE MODE SETTINGITEM No.
  • Page 31 4.4.5 DESCRIPTION OF STATUS DISPLAY OF RGB BOX PATTERN MODE This mode is used to adjust the DRIVE CIRCUIT. 4.4.5.1 HOW TO ENTER THE RGB BOX PATTERN MODE When the SERVICE MENU SCREEN of SERVICE MODE is displayed, press [9] key to enter the RGB BOX PATTERN MODE (Fig3). 4.4.5.2 DESCRIPTION OF STATUS DISPLAY OF RGB BOX PATTERN MODE RGB BOX PATTERN MODE...
  • Page 32 INITIAL SETTING VALUES IN THE SERVICE MODE • Perform fine-tuning based on the "initial values" using the remote control when in the Service mode. • The "initial values" serve only as an indication rough standard and therefore the values with which optimal display can be achieved may be different from the default values.
  • Page 33 Item No. Item Variable range Setting value Item No. Item Variable range Setting value D020 SYH CON 00 - 3F D070 (Not display) 00 - FF D021 SYH CONF 00 - 01 D071 (Not display) 00 - FF D022 SC CON 00 - 3F D072 (Not display)
  • Page 34 Item No. Item Variable range Setting value Item No. Item Variable range Setting value D120 (Not display) 00 - FF D170 (Not display) 00 - FF D121 (Not display) 00 - FF D171 (Not display) 00 - FF D122 (Not display) 00 - FF D172 (Not display)
  • Page 35 ADJUSTMENT PROCEDURE 4.6.1 FOCUS Measuring Item Test point Adjustment part Description instrument LENS FOCUS Hexagon FOCUS knob (1) Remove the SPEAKER GRILL and CENTRE wrench [PROJECTION LENS] PANEL. (2.5mm) (2) Display the MENU screen. (3) Loosen the focus lock screw. (4) Adjust the FOCUS knob so that the centre Projection lens screen may become the best focus.
  • Page 36 Measuring Item Test point Adjustment part Description instrument DRIVE CENTRE Remote [9.RGB BOX PATTERN] (1) Receive a centre cross (or crosshatch) pattern. POSITION control unit (2) Press [INFORMATION] [MUTING] key simultaneously, to enter the Signal SERVICE MODE. generator (3) Press the [9] key, to select "RGB BOX PATTERN MODE"...
  • Page 37 Measuring Item Test point Adjustment part Description instrument 1125i (50Hz) Remote [1.ADJUST] (1) Receive a 1125i (50Hz) 30% all white pattern A-D OFFSET control unit S001: PREPARE signal. (Adjustment setting mode change) (2) Set PICTURE MODE to "STANDARD". Signal (3) Set ZOOM to "FULL". generator S013: HD CB OF(1125i Cb offset) (4) Set COLOUR TEMP.
  • Page 38 Measuring Item Test point Adjustment part Description instrument WHITE Remote [1.ADJUST] (1) Receive a PAL 75% all white signal. BALANCE control unit S030: R DRIVE (Red drive) (2) Set PICTURE MODE to "STANDARD". (HIGHLIGHT) S031: G DRIVE (Green drive) (3) Set ZOOM to "FULL". Signal S032: B DRIVE (Blue drive) (4) Set COLOUR TEMP.

  • Page 39: Troubleshooting

    SECTION 5 TROUBLESHOOTING SELF CHECK FEATURE 5.1.5 POINTS TO NOTE WHEN USING THE SELF CHECK FEATURE 5.1.1 OUTLINE In addition to circuit failures (abnormal operation), the following This unit comes with the "Self check" feature, which checks the cases may also be iagnosed as "Abnormal" and displayed and operational state of the circuit and displays/saves it during counted as "NG".
  • Page 40 5.1.6 DETAILS Self check is performed for the following items: < Page 1 of screen > Diagnosis Detection item Display Detection content Detection timing signal (line) Low bias line short Confirm the operation of the low bias (2.5V / LB_PRO Detection starts 3 seconds after protection 3.3V / 5V / 9V) protection circuit.
  • Page 41 < Page 2 of screen > Diagnosis Detection item Display Detection content Detection timing signal (line) Fan lock Not used. Abnormal of operation of Not used. PANEL Abnormal rise Not used. oftemperature in PANEL Abnormal rise of Not used. temperature in AUDIO Short circuit detection of Not used.
  • Page 42 Victor Company of Japan, Limited ILA Display Category 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama-city, Kanagawa-prefecture, 221-8528, Japan (No.YA385) Printed in Japan...

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