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JVC HV-32D25EUW Service Manual
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JVC HV-32D25EUW Service Manual

JVC HV-32D25EUW Service Manual

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SERVICE MANUAL
12
2002
52068
CONTENTS
SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
SERVICE ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

COLOUR TELEVISION

HV-32D25EUW
HV-32D25EJW
COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.
HV-32D25EUW
HV-32D25EJW
BASIC CHASSIS
MK
No.52068
2002/12

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Summary of Contents for JVC HV-32D25EUW

  • Page 1: Colour Television

    HV-32D25EUW HV-32D25EJW SERVICE MANUAL COLOUR TELEVISION 52068 2002 HV-32D25EUW BASIC CHASSIS HV-32D25EJW CONTENTS SAFETY PRECAUTIONS ......... . . 4 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 Headphone jack Stereo mini jack (Ø3.5mm) Remote Control Unit RM-C61 (AAA/R03 Dry cell battery x 2) : HV-32D25EUW RM-C62 (AAA/R03 Dry cell battery x 2) : HV-32D25EJW Design & specifications are subject to change without notice. Manufactured under license from Dolby Laboratories Licensing Corporation.
  • Page 3 HV-32D25EUW HV-32D25EJW 21-pin Euro connector (SCART) : EXT-1/EXT-2/EXT-3 PinNo. Signal Designation Matching Value EXT-1 EXT-2 EXT-3 AUDIO R output 500mV(rms) (Nominal), Used (TV OUT) Used (LINE OUT) NC Low impedance AUDIO R input 500mV(rms) (Nominal), Used Used Used High impedance...
  • Page 4 HV-32D25EUW HV-32D25EJW SECTION 1 SAFETY PRECAUTIONS 1.1 HV-32D25EUW connecting the other end of the lead through a 10k resistor to the anode button. (1) The design of this product contains special hardware, (8) When service is required, observe the original lead dress.
  • Page 5 HV-32D25EUW HV-32D25EJW 1.2 HV-32D25EJW [UK VERSION] (1) The design of this product contains special hardware and many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Re- placement parts must be identical to those used in the original circuits.

  • Page 6: Specific Service Instructions

    HV-32D25EUW HV-32D25EJW SECTION 2 SPECIFIC SERVICE INSTRUCTIONS 2.1 MAIN DIFFERENCE LIST ITEM HV-32D25EUW HV-32D25EJW POWER CORD QMPK160-185-JC QMPN130-185-JC REMOTE CONTROL UNIT RM-C61-1C RM-C62-1C LCT1272-001A-U INST BOOK LCT1273-001A-U LCT1271-001A-U LCT1274-001A-U RATING LABEL LC11548-003A-U LC11364-018A-U EURO LABEL AEM1064-034-E AEM1064-035-E 2.1.1 FEATURES • DIST (Digital Image Scaling Technology) employs an interpolation method that doubles the scanning lines to realize 1250-line flicker-free picture making it especially suitable for reproducing high-resolution pictures even on large-screen displays.
  • Page 7 HV-32D25EUW HV-32D25EJW 2.2 SYSTEM BLOCK MICOM IC004 IC001 MEMORY MICRO COMPUTER SDA 0 SCL 0 MAIN SDA 2 SDA 1 IC201 IC301 SCL 2 SCL 1 SYNC.SEP. PROCESSOR IC101 TU001 COMPONENT SW MAIN TUNER AV SW PWB DOLBY PWB IC601...
  • Page 8 HV-32D25EUW HV-32D25EJW 2.3 FUNCTIONS 2.3.1 FRONT CONTROL & REAR (SIDE) TERMINAL Refer to the pages in brackets for details. Remote control sensor Power lamp (GREEN : Operation, RED : Stand-by) Main power button Headphone jack (mini jack) Channel up/down & Volume +/- buttons...
  • Page 9 HV-32D25EUW HV-32D25EJW 2.3.3 REMOTE CONTROL UNIT RM-C62 : HV-32D25EJW RM-C61 : HV-32D25EUW Muting button Muting button Number buttons Number buttons ZOOM button ZOOM button 3D sound button 3D sound button Information button Information button TV button TV button buttons buttons...
  • Page 10 HV-32D25EUW HV-32D25EJW 2.4 DISASSEMBLY PROCEDURE 2.4.1 REMOVING THE SUB WOOFER UNIT & THE REAR (2) Remove the 4 screws [G] attaching the SIDE SPEAKER. COVER (3) Follow the same steps when removing the other hand (1) Unplug the power cord.
  • Page 11 HV-32D25EUW HV-32D25EJW FRONT CABINET SPEAKER ADAPTER ( 4) SIDE SPEAKER CKET CRT SO ( 3) LINE FILTER PWB POWER & DE F. PWB CLOW DEF OSC PWB MICOM CHASSIS BASE EHT PWB FRONT AV TERMINAL DIST PWB CONTRO BOARD MAIN...
  • Page 12 HV-32D25EUW HV-32D25EJW 2.4.11 REMOVING THE CRT CRT CHANGE TABLE Note: • Replacement of the CRT should be performed by 2 or more persons. • After removing the REAR COVER, CHASSIS etc., APPROX. (1) Putting the CRT change table on soft cloth, the CRT...
  • Page 13 HV-32D25EUW HV-32D25EJW 2.5 REPLACEMENT OF MEMORY ICs 2.5.1 MEMORY ICs This TV use memory ICs. In the memory ICs, there are memorized data for correctly operating the video and deflection SERVICE MENU circuits. When replacing memory ICs, be sure to use ICs written...
  • Page 14 HV-32D25EUW HV-32D25EJW 2.5.3 USER SETTING VALUES (SHIPPING VALUES) Setting item Setting value Setting item Setting value MAIN POWER SW PICTURE SETTING SHIPPING CHANNEL PICTURE MODE BRIGHT PRESET CHANNEL See ; OPERATING COLOUR TEMP NORMAL INSTRUCTIONS. ZOOM MODE PANORAMIC TINT NORMAL...
  • Page 15 HV-32D25EUW HV-32D25EJW 2.5.4 SERVICE MENU SETTING ITEMS Setting item Setting value Setting item Setting value 1.IF 1.VCO 6.STATUS (Do not adjust) 2.ATT ON/OFF 2. V/C 1.CUT OF R 12.TWN CONT 7.VNR 1.MYLV 10.MCCOR 2.CUT OF G 13.COLOUR (Do not adjust) 2.ONMVF...
  • Page 16 HV-32D25EUW HV-32D25EJW 2.6 REPLACEMENT OF CHIP COMPONENT 2.6.1 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.
  • Page 17 HV-32D25EUW HV-32D25EJW SECTION 3 SERVICE ADJUSTMENTS 3.1 ADJUSTMENT PREPARATION (1) There are 2 ways of adjusting this TV: One is with the REMOTE CONTROL UNIT and the other is the conventional method using adjustment parts and components. (2) The setting (adjustment) using the REMOTE CONTROL UNIT is made on the basis of the initial setting values. The setting values which adjust the screen to the optimum condition can be different from the initial setting values.
  • Page 18 HV-32D25EUW HV-32D25EJW 3.3 ADJUSTMENT LOCATIONS FRONT CONTROL PWB FRONT POWER SW POWER LINE FILETER PWB SIDE CONTROL PWB D8801 IC8851 LF9901 F8901 LF8901 IC9931 POWER CORD CN8016 FRONT MAIN PWB POWER&DEF PWB MICOM PWB CN001 DOLBY PWB AV SW PWB...
  • Page 19 9.SHIPPING(OFF) Don't select under the adjustment.as this menu is set in "ON" after the inspection. Note: When users press the MAIN POWER button, the JVC logo appears. If they press any keys, the LANGUAGE menu appears. 10.BUS FREE It is not requirement to adjustment.
  • Page 20 HV-32D25EUW HV-32D25EJW 3.4.3 BASIC OPERATION IN SERVICE MENU SERVICE MENU (1) How to enter SERVICE MENU Press the [INFORMATION] key and the [MUTE] key of the SERVICE MENU REMOTE CONTROL UNIT simultaneously, 1. IF 2. V/C SERVICE MENU screen of Fig. 1 will be displayed.
  • Page 21 HV-32D25EUW HV-32D25EJW SERVICE MENU SERVICE MENU 1. IF 2. V/C 3. AUDIO 4. DEF 5. VSM PRESET 6. STATUS 7. VNR 8. IP 9. SHIPPING (OFF) 0. BUS FREE 1-9 : SELECT : EXIT 4. DEF 1.IF(VCO) IF SERVICE MENU...
  • Page 22 HV-32D25EUW HV-32D25EJW 3.5 ADJUSTMENTS 3.5.1 CHECK ITEM Mesuring Item Test point Adjustment part Description instrument B1 POWER Signal CN0S1 2. V/C --> (1) Receive any broadcast. SUPPLY generator connector 1. CUT OF R (2) Select 2. V/C from the SERVICE MENU.
  • Page 23 HV-32D25EUW HV-32D25EJW 3.5.2 HIGH VOLTAGE Mesuring Item Test point Adjustment part Description instrument HIGH VOLTAGE Signal CRT anode 2. V/C --> (1) Receive any broadcast. generator 1. CUT OF R (2) Select 2. V/C from the SERVICE MENU. Chassis GND (3) Select 1.
  • Page 24 HV-32D25EUW HV-32D25EJW 3.5.5 FOCUS Mesuring Item Test point Adjustment part Description instrument FOCUS Signal FOCUS 1 VR (1) Receive the cross-hatch signal generator [HVT] (2) Set the FULL mode. (3) By turning the FOCUS 1 VR, adjust the picture so...
  • Page 25 HV-32D25EUW HV-32D25EJW 3.5.7 VIDEO / CHROMA CIRCUIT ADJUSTMENT The setting (adjustment) using the remote control unit is made on the basis of the initial setting values. The setting values which adjust the screen to the optimum condition can be different from the initial setting values.
  • Page 26 HV-32D25EUW HV-32D25EJW Mesuring Item Test point Adjustment part Description instrument WHITE Signal 2. V/C --> • Proceed to the following adjustment after having BALANCE generator 4. DRIVE R completed the adjustment of LOW LIGHT WHITE (High light) 5. DRIVE G BALANCE.
  • Page 27 HV-32D25EUW HV-32D25EJW Mesuring Item Test point Adjustment part Description instrument Signal 2. V/C --> (1) Receive the black and white pattern signal (colour BRIGHTNESS generator 9. BRIGHT off). (2) Select 2. V/C from the SERVICE MENU. Remote (3) Select 9. BRIGHT.
  • Page 28 HV-32D25EUW HV-32D25EJW Mesuring Item Test point Adjustment part Description instrument SECAM Signal TP-R 2. V/C --> [Method of adjustment without measuring SUB COLOUR generator TP-E 13. COLOUR instrument] [CRT SOCKET (1) Receive SECAM broadcast. Oscilloscope PWB] (2) Select 2.V/C from the SERVICE MENU.
  • Page 29 HV-32D25EUW HV-32D25EJW Mesuring Item Test point Adjustment part Description instrument NTSC 3.58MHz Signal TP-R 2. V/C --> [Method of adjustment without measuring SUB TINT generator TP-E 14. HUE instrument] [CRT SOCKET (1) Input a NTSC 3.58MHz COMPOSITE VIDEO Oscilloscope PWB] signal (full field colour bar with 75% white) from the EXT terminal.
  • Page 30 HV-32D25EUW HV-32D25EJW Mesuring Item Test point Adjustment part Description instrument SUB SCREEN Signal TP-R 2. V/C --> (1) Receive PAL colour bar signal to right and left SUB COLOUR & generator TP-E 16.TWN COL screen. SUB TINT [CRT SOCKET 17.TWN TNT...
  • Page 31 HV-32D25EUW HV-32D25EJW 3.5.8 DEFLECTION CIRCUIT ADJUSTMENTS The setting (adjustment) using the remote control unit is made on the basis of the initial setting values. The setting values which adjust the screen to the optimum condition can be different from the initial setting values.
  • Page 32 HV-32D25EUW HV-32D25EJW Mesuring Item Test point Adjustment part Description instrument V.SIZE Signal 4.DEF --> (1) Receive a cross-hatch signal. generator 3.V-SIZE (2) Select 4.DEF from the SERVICE MENU. (3) Select 3.V-SIZE. Remote (4) Adjust to make the vertical screen size 92% of the control unit picture size.
  • Page 33 HV-32D25EUW HV-32D25EJW Mesuring Item Test point Adjustment part Description instrument SIDEPIN Signal 4.DEF --> (1) Receive a cross-hatch signal. generator 7.EW-PIN (2) Select 4.DEF from the SERVICE MENU. (3) Select 7. EW-PI.N Remote (4) Adjust so that the first vertical lines at the left and control unit right edges on the screen are straight.
  • Page 34 HV-32D25EUW HV-32D25EJW Mesuring Item Test point Adjustment part Description instrument CORNER PIN Signal 4. DEF --> (1) Receive a cross-hatch signal. generator 8. COR-UP (2) Select 4. DEF from the SERVICE MENU. 9. COR-LOW (3) Select 8.COR-UP. Remote (4) Set the initial setting value.
  • Page 35 HV-32D25EUW HV-32D25EJW...
  • Page 36 HV-32D25EUW HV-32D25EJW VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan Printed in Japan 0212 WPC...

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