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JVC HV-32P37SUE Service Manual
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JVC HV-32P37SUE Service Manual

JVC HV-32P37SUE Service Manual

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SERVICE MANUAL
11
2003
YA011
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-43
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED
COLOUR TELEVISION
HV-32P37SUE,
HV-32P37SJE

TABLE OF CONTENTS

BASIC CHASSIS
MM
No.YA011
2003/11

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Summary of Contents for JVC HV-32P37SUE

  • Page 1: Table Of Contents

    SERVICE MANUAL COLOUR TELEVISION YA011 2003 HV-32P37SUE, HV-32P37SJE BASIC CHASSIS TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 SPECIFICATION Content Item HV-32P37SUE HV-32P37SJE Dimensions ( W × H × D ) 94.8cm × 56.2cm × 55.0cm Mass 54.0kg TV RF System CCIR (B/G, I, D/K, L/L') CCIR (B/G, I, D/K, L) Colour System PAL / SECAM / NTSC (Only EXT mode)

  • Page 3: Precaution

    SECTION 1 PRECAUTION SAFETY PRECAUTIONS [EXCEPT FOR UK] (1) The design of this product contains special hardware, (8) When service is required, observe the original lead dress. many circuits and components specially for safety Extra precaution should be given to assure correct lead purposes.
  • Page 4 SAFETY PRECAUTIONS [FOR UK] (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. Replacement parts must be identical to those used in the original circuits.

  • Page 5: Specific Service Instructions

    (P-P= Peak to Peak, B-W= Blanking to white peak) [Pin assignment] 18 16 12 10 19 17 13 11 MAIN DIFFERENCE LIST Content Item HV-32P37SUE HV-32P37SJE POWER CORD QMPK160-185JC QMPK-185-JC TV RF System CCIR (B/G, I, D/K, L/L') CCIR (B/G, I, D/K, L) ←...
  • Page 6 FEATURES ADVANTAGES OF D.I.S.T D.I.S.T. (Digital Image Scaling Technology) realizes a flicker-free, high-resolution picture(1250i/75Hz). It can accept virtually all currently used video signal formats, reproducing them with high resolution and improved detail that is very clear to the viewer. The signal path of D.I.S.T. from input to output can be divided into 5 components: (1) Interlace-Progressive Converter;...
  • Page 7 FUNCTIONS FRONT PANEL Remote control sensor Power lamp Power button REAR PANEL EXT- EXT- EXT- EXT- AV TERMINAL BOARD AUDIO OUT EXT- EXT- SIDE CONTROL JACK EXT- EXT- AUDIO OUT Aeriel terminal EXT-4 terminal Headphone jack AUDIO OUT terminal buttons, -/+ buttons EXT-1 terminal Volume button EXT-2 terminal...
  • Page 8 REMOTE CONTROL UNIT VCR / TV / DVD switch Muting key ZOOM Number key MENU Information key Zoom key 3D Sound key TV key Function (UP/DOWN, RIGHT/LEFT) keys Text key BACK Programme keys VCR/DVD/Text control key Standby key VCR/TV/DVD Switch AV key Colour key Multi screen key...
  • Page 9 TECHNICAL INFORMATION 2.5.1 SYSTEM BLOCK DIAGRAM MAIN PWB IC1781[10] MAIN MEMORY SCL0 / SDA0 DEF OSC PWB DIST PWB IC3001[0Z] IC1301[0Z] IC0212[0H] IC0161[0H] MAIN CHROMA RGB PROCESSOR DAC1 DEF CONTROL DEMODULATOR SCL1 / SDA1 IC1721[10] IC1701[10] IC801[0S] IC802[0S] IP LATCH MAIN DAC SUB CHROMA SUB DIGITAL...

  • Page 10: Disassembly

    SECTION 3 DISASSEMBLY DISASSEMBLY PROCEDURE 3.1.7 CHECKING THE PW BOARD (1) Pull out the MAIN CHASSIS (Refer to REMOVING THE 3.1.1 REMOVING THE REAR COVER MAIN CHASSIS). (1) Unplug the power plug. (2) Erect the MAIN CHASSIS vertically so that you can easily (2) Remove 13 screws [A] as shown in the Fig.
  • Page 11 FRONT CABINET MAIN SPEAKER HOLDER CRT SOCKET MAIN SPEAKER LINE FILTER PWB LF BASE POWER & DEF. PWB CLAW MI-COM HVT HOLDER MAIN CHASSIS EHT PWB FRONT CONTROL DEF OSC PWB AV TERMINAL CONTROL BOARD CLAW BASE MAIN PWB DIST PWB AV SW PWB Fig.1 POWER CORD...
  • Page 12 REMOVING THE CRT NOTE: CRT CHANGE TABLE • Replacement of the CRT should be performed by 2 or more persons. • After removing the REAR COVER, CHASSIS etc., (1) Putting the CRT change table on soft cloth, the CRT APPROX. change table should also be covered with such soft cloth 35cm (shown in Fig.
  • Page 13 MEMORY IC REPLACEMENT 3.3.1 MEMORY IC This TV use the memory IC. In the memory IC, there are memorized data for correctly operating for the video and deflection circuits and more. When replacing the memory IC, be sure to use IC written with the initial values of data. 3.3.2 PROCEDURE FOR REPLACING MEMORY IC 1.
  • Page 14 FACTORY SHIPPING SETTING 3.4.1 SETTING VALUE OF SYSTEM CONSTANT SET Setting item Variable range Setting value 1. P MUTE YES / NO 3.4.2 SETTING OF REMOTE CONTROL UNIT Setting item Setting value Setting item Setting value POWER 3D SOUND VOLUME ZOOM PANORAMIC CHANNEL...
  • Page 15 REPLACEMENT OF CHIP COMPONENT 3.5.1 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. 3.5.2 SOLDERING IRON (1) Use a high insulation soldering iron with a thin pointed end of it.

  • Page 16: Adjustment

    SECTION 4 ADJUSTMENT 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 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 17 ADJUSTMENT LOCATIONS FRONT FRONT CONTROL PWB F901 POWER SW FRONT TO MAIN PWB POWER CORD TO SIDE CONTROL PWB TO LINE FILTER PWB TO FRONT CONTROL PWB POWER & DEF. PWB MAIN PWB CN016 TO DEG COIL CN001 CN001 TO SPEAKER CN002 CN002 SIDE CONTROL PWB...
  • Page 18 FRONT LINE FILTER PWB TO POWER & DEF. PWB FRONT TO POWER & DEF. PWB TO FRONT CONTROL PWB POWER & DEF. PWB MAIN PWB TO LINE FILTER PWB CN016 TO DEG COIL TO LINE FILTER PWB CN001 CN001 CN002 CN002 MI-COM PWB TO CRT SOCKET PWB...
  • Page 19 TOOL OF SERVICE MENU OPERATION Operate the SERVICE MENU with the REMOTE CONTROL UNIT. 4.5.1 SERVICE MENU ITEMS With the SERVICE MENU, various adjustment can be made, and they are broadly classified in the following items of settings. Sub Menu item Description 1.IF This mode adjusts the IF circuit.
  • Page 20 4.5.6 DESCRIPTION OF SERVICE MENU SCREEN Describe the screen when display the sub menu screen. For example, describe about 2. V/C, 4. DEF and 5. VSM PRESET. 4.5.6.1 2. V/C 4.5.6.3 5. VSM PRESET V / C VSM PRESET BRIGHT Colour system 1.
  • Page 21 4.5.7 SETTING METHOD OF SUB MENU SCREEN 4.5.7.1 1. IF [Perform only confirmation] When enter to the 1. IF adjustment screen, display the sub select IF SERVICE MENU screen as shown in figure. Then select the one of 1.VCO or 2. 1.

  • Page 22: Service Menu

    SERVICE MENU FLOW CHART SERVICE MENU SERVICE MENU 2. V/C 1. IF 4. DEF 3. AUDIO 6. STATUS 5. VSM PRESET 8. IP 7. 3DNR 0. BUS FREE 9. SHIPPING(OFF) 1-9 : SELECT i : EXIT Do not adjust. 1.IF 6.
  • Page 23 INITIAL SETTING VALUE OF SERVICE MENU (1) Adjustment of the SERVICE MENU is made on the basis of the initial setting values. However, the new setting values which displays on the screen in its optimum condition may differ from the initial setting value. (2) Do not change the initial setting values of the items not listed in "ADJUSTMENT PROCEDURE".
  • Page 24 4.7.4 [3. AUDIO] Setting item Variable range Initial setting value 1.ERROR LIMIT 0000H~FFF0H 100H 2.A2 ID THR 0000H~00FFH 3.Q-PEAK B/G→I→D/K→L ----- 4.SOUND LEVEL ----- FFFFH Initial setting value Setting item Variable range SURROUND HIGH 5.VIRT_MODE PANORAMA / 3D PANORAMA 3D PANORAMA 3D PANORAMA 3D PANORAMA 6.VIRT_SPAT...
  • Page 25 4.7.6 [7.3DNR] Initial setting value External External (Composite / S) Setting item Variable range (Component) NTSC NTSC NTSC NTSC SECAM SECAM 625i 525i 3.58 4.43 3.58 4.43 1. YNR LIM 0000~0003 2. YNR K 0000~0003 3. YNR GAIN 0000~0003 4. CNR LIM 0000~0003 5.
  • Page 26 Initial setting value External External (Composite / S) Setting item Variable range (Component) NTSC NTSC NTSC NTSC SECAM SECAM 625i 525i 3.58 4.43 3.58 4.43 41. F1VER 0000~0003 42. MREF 0000~0007 43. CDEYE 0000~0003 44. YDEYE 0000~0003 45. MDS 0000~0001 46.
  • Page 27 Initial setting value External External (Composite / S) Setting item Variable range (Component) NTSC NTSC NTSC NTSC SECAM SECAM 625i 525i 3.58 4.43 3.58 4.43 81. EN PIXH W 0000~000F 82. EN PIXV S 0000~000F 83. EN PIXV A 0000~0001 84.
  • Page 28 4.7.7 [8. IP] Initial setting value Single screen External External Setting item Variable range (Composite / S) (Component) External (RGB) 625p / 625i 525i 625i 525i 625i 525i 1125i 525p 1. ASLGAIN 0~63 2. ASLVHGAIN 0~63 3. ASLHGAIN 0~63 4. ASLVPEAKFREQ 5.
  • Page 29 Initial setting value Text 2 screen / Multi 2 screen / Multi 12 screen External External Setting item Variable range (Composite / S) (Component) External (RGB) 625p / 625i 525i 625i 525i 625i 525i 525p screen 1. ASLGAIN 0~63 2. ASLVHGAIN 0~63 3.
  • Page 30 Initial setting value When main screen input is other than RGB, 625p and 525p Multi 2 screen (Sub screen) Setting item Variable range Single External External screen External (Composite / S) (Component) (RGB) 625i 525i 625i 525i 625i 525i 36. BSLGAIN 0~63 37.
  • Page 31 Initial setting value When main screen input is one of RGB, 625p or 525p Multi 2 screen (Sub screen) Setting item Variable range External External External (Composite / S) (Component) screen (RGB) 625i 525i 625i 525i 625i 525i 36. BSLGAIN 0~63 37.
  • Page 32 ADJUSTMENT PROCEDURE 4.8.1 CHECK ITEM Measuring Item Test point Adjustment part Description instrument B1 POWER Signal S1 Connector [2. V/C] (1) Receive the black and white signal (color off). SUPPLY generator TP-91 1. CUT_OF_R (2) Connect the DC voltmeter to TP-91 (S1 connector 5 check TP-E pin) and TP-E (S1 connector 1 pin).
  • Page 33 4.8.4 TUNER / IF CIRCUIT Measuring Item Test point Adjustment part Description instrument IF VCO check Remote [1. IF] • It must not adjust without inputting the RF signal. control unit 1. VCO (1) Receive the broadcast. (2) Select 1. IF. (3) Select <...
  • Page 34 4.8.6 VSM PRESET Measuring Item Test point Adjustment part Description instrument Remote [5. VSM PRESET] (1) Select 5. VSM PRESET PRESET control unit 1. CONT (2) Set the PICTURE MODE to "BRIGHT". setting 2. BRIGHT (3) Select < 1. CONT >. 3.
  • Page 35 4.8.7 VIDEO CIRCUIT Measuring Item Test point Adjustment part Description instrument WHITE Signal [2. V/C] (1) Receive the black and white signal (color off). BALANCE generator 1. CUT_OF_R (2) Select the 2. V/C. (LOW LIGHT) 2. CUT_OF_G (3) Set the initial setting value of < 1.CUT_OF_R >, < 2. Remote 3.
  • Page 36 Measuring Item Test point Adjustment part Description instrument WHITE Signal [2. V/C] (1) Receive the black and white signal (color off). BALANCE generator 4. DRIVE_R (2) Select the 2. V/C. (HIGH LIGHT) 5. DRIVE_G (3) Set the initial setting value of < 4. DRIVE_R >, < 5. Remote 6.
  • Page 37 Measuring Item Test point Adjustment part Description instrument SUB COLOUR(1) Signal [2. V/C] [Method of adjustment without measuring instruments] generator 9. COLOUR PAL COLOUR Remote (1) Receive PAL broadcast. control unit (2) Select 2. V/C. (3) Set the initial setting value for < 9. COLOUR >. (4) If the colour is not the best with the initial set value, Colour system Initial setting value...
  • Page 38 Measuring Item Test point Adjustment part Description instrument SUB TINT(1) Signal [2. V/C] [Method of adjustment without measuring instruments] generator 10. TINT NTSC 3.58 TINT Remote (1) Input NTSC3.58MHz full field colour bar signal (75% control unit white). (2) Select 2. V/C. (3) Set the initial setting value of <...
  • Page 39 4.8.8 DEFLECTION CIRCUIT (1) The deflection 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. (2) There are several kinds of adjustment modes with the vertical frequency (Vertical frequency : PAL-50Hz, NTSC-60Hz).
  • Page 40 Measuring Item Test point Adjustment part Description instrument H. POSITION Signal [4. DEF] (1) Receive the circle pattern signal. generator 4. H-CENT (2) Select 4. DEF. (3) Set the initial setting value of < 4. H-CENT >. Remote (4) Adjust < 4. H-CENT > to become C=D as shown in control unit left figure.
  • Page 41 Measuring Item Test point Adjustment part Description instrument TRAPEZIUM Signal [4. DEF] (1) Receive the crosshatch signal. generator 6. TRAPEZ (2) Select 4. DEF. (3) Set the initial setting value of < 7. TRAPEZ >. Remote (4) Adjust < 7. TRAPEZ > to become the vertical lines at control unit the right and left edges of the screen parallel.
  • Page 42 4.8.9 SUB SCREEN ADJUSTMENT Measuring Item Test point Adjustment part Description instrument SUB SCREEN Signal [2. V/C] (1) Set the screen to the multi (twin) mode. CONTRAST generator 11. TWN_CONT (2) Receive the black and white signal (color off) to both right and left screen.

  • Page 43: Troubleshooting

    SECTION 5 TROUBLESHOOTING This service manual does not describe TROUBLESHOOTING. (No.YA011)1-43...
  • Page 44 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan (No.YA011) Printed in Japan...

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