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JVC AV-20RM4SE Service Manual

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SERVICE MANUAL
2
2005
YA080
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
COLOUR TELEVISION
AV-20RM4SE,
AV-21RM4SE,
AV-21RM4SN,
AV-21RM4SP
TV
RM-C1100
[AV-21RM4]

TABLE OF CONTENTS

COPYRIGHT © 2005 Victor Company of Japan, Limited
No.YA080
2005/2

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  • Page 1: Table Of Contents

    SERVICE MANUAL COLOUR TELEVISION YA080 2005 AV-20RM4SE, AV-21RM4SE, AV-21RM4SN, AV-21RM4SP RM-C1100 [AV-21RM4] TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 SPECIFICATION Content Item AV-20RM4SE AV-21RM4SE AV-21RM4SP AV-21RM4SN Dimensions ( W × H × D ) 60.6cm × 47.5cm × 49.0cm 60.6cm × 47.5cm × 47.0cm Mass 18kg 21kg TV RF System B/G, L B/G, D/K Colour Sys- TV Mode PAL / SECAM Video Mode PAL / SECAM / NTSC 3.58 / NTSC 4.43...

  • 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

    • Automatic sound mute when no transmission. • It is possible to connect headphone. • 5 minutes after the broadcasting (closedown), the TV switches • Direct channel access. itself automatically to stand-by mode. MAIN DIFFERENCE LIST Item AV-20RM4SE AV-21RM4SE AV-21RM4SN AV-21RM4SP MAIN PWB ASSY VE-20161051 VE-20161048...

  • Page 6: Disassembly

    SECTION 3 DISASSEMBLY DISASSEMBLY PROCEDURE 3.1.1 REMOVING THE REAR COVER 3.1.6 CHECKING THE PW BOARD (1) Unplug the power cord. • To check the back side of the PW Board. (2) Remove the 6 screws [A]. (1) Pull out the PW Board. (Refer to REMOVING THE MAIN (3) Withdraw the REAR COVER toward you.
  • Page 7 BACK COVER (x6) PICTURE TUBE CRT SOCKET PWB (Within MAIN PWB) FRONT CABINET SPEAKER (x4) FUNCTION BUTTON MAIN PWB (x2) FRONT AV JACK PWB (x1) HEADPHONE JACK (No.YA080)1-7...
  • Page 8 REPLACEMENT OF MEMORY IC 3.2.1 MEMORY IC This model use a memory IC. This memory IC stores data for proper operation of the video and deflection circuits. When replacing, be sure to use an IC containing this (initial value) data. 3.2.2 PROCEDURE FOR REPLACING MEMORY IC SERVICE MENU PROCEDURE...
  • Page 9 SETTING OF THE LAST MEMORY FOR SHIPMENT 3.3.1 USER SETTING VALUES Setting item Setting value Setting item Setting value PICTURE MENU INSTALL BRIGHTNESS PROGRAMME These adjust are automatically CONTRAST BAND restored when APS bit in COLOUR service menu is set. CHANNEL Refer to the INSTRUCTION The procedure for setting APS...
  • Page 10 REPLACEMENT OF CHIP COMPONENT 3.4.1 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. 3.4.2 SOLDERING IRON (1) Use a high insulation soldering iron with a thin pointed end of it.

  • Page 11: Adjustment

    SECTION 4 ADJUSTMENT ADJUSTMENT PREPARATION (1) You can make the necessary adjustments for this unit with Setting item Setting value either the Remote Control Unit or with the adjustment tools BRIGHTNESS and parts as given below. (2) Adjustment with the Remote Control Unit is made on the CONTRAST Center basis of the initial setting values, however, the new setting...
  • Page 12 BASIC OPERATION OF SERVICE MODE 4.5.1 HOW TO ENTER SERVICE MODE 4.5.4 HOW TO ENTER THE GEOMETRY MENU (1) Press the MENU key. • This model is built-in GEOMETRY MENU for geometry (2) MENU screen will be displayed (fig.1). adjustment. (1) Enter the SERVICE MODE.
  • Page 13 4.5.5 ADJUSTMENT ITEM 4.5.5.1 SERVICE MENU 4.5.5.2 GEOMETRY MENU Adjustment Adjustment Description Description item item HORIZONTAL POSITION OF OSD VSIZ VERTICAL SIZE for 50Hz IF COARSE ADJUSTMENT VPOS VERTICAL POSITION for 50Hz IF FINE ADJUSTMENT VSCO VERTICAL S-CORRECTION for 50Hz IF COARSE ADJUSTMENT FOR L-PRIME VCCO VERTICAL CORNER CORRECTION for 50Hz...
  • Page 14 ADJUSTMENTS PROCEDURE 4.6.1 FOCUS ADJUSTMENT Measuring Item Test point Adjustment part Description instrument FOCUS Signal FOCUS VR (1) Receive a PAL crosshatch signal. adjustment generator [On the FBT] (2) Adjust FOCUS VR on the FBT as thin as possible. Remote control unit FOCUS VR SCREEN VR...
  • Page 15 4.6.4 IF ADJUSTMENT Measuring Item Test point Adjustment part Description instrument IF adjustment Remote (1) Receive a PAL colour bar pattern. control unit (2) Enter the SERVICE MODE. (3) Select IF 1 with the [ ]/[ ] key. (4) Press [BLUE] key during IF 1 is highlighted, IF 1 and IF 2 values are adjusted automatically by software.
  • Page 16 Measuring Item Test point Adjustment part Description instrument VERTICAL Signal VPOF (1) Receive a NTSC circle pattern of vertical frequency POSITION generator 60Hz. OFFSET (2) Enter the SERVICE MODE. (60Hz) Remote (3) Select VPOF with the [ ]/[ ] key. adjustment control unit (4) Adjust VPOF with the [ ]/[ ] key until the picture is...
  • Page 17 Measuring Item Test point Adjustment part Description instrument VERTICAL Signal VPOS (1) Receive a PAL circle pattern signal of vertical POSITION generator frequency 50Hz. (50Hz) (2) Enter the GEOMETRY MODE. adjustment Remote (3) Select VPOS (Vertical position) with the [ ]/[ ] key. control unit (4) Adjust VPOS with the [ ]/[ ] key until the circle pattern is vertically centered.
  • Page 18 Measuring Item Test point Adjustment part Description instrument RGB MODE Signal RGBH (1) Input R/G/B circle pattern signal via video input HORIZONTAL generator terminal. SHIFT (2) Press [AV] key, force the TV to RGB mode. adjustment Remote (3) Enter the SERVICE MODE. control unit (4) Select RGBH with the [ ]/[ ] key.

  • Page 19: Troubleshooting

    SECTION 5 TROUBLESHOOTING This service manual does not describe TROUBLESHOOTING. (No.YA080)1-19...
  • Page 20 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.YA080) Printed in Japan...
  • Page 21 AV-20RM4SE, AV-21RM4SE AV-21RM4SN, AV-21RM4SP STANDARD CIRCUIT DIAGRAM CONTENTS BLOCK DIAGRAM CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM 2-18 HEADPHONE JACK PWB CIRCUIT DIAGRAM 2-19 FRONT AV JACK PWB CIRCUIT DIAGRAM PATTERN DIAGRAMS 2-21 MAIN PWB PATTERN 2-23 HEADPHONE JACK PWB PATTERN...
  • Page 22 2-2(No.YA080)

  • Page 23: Block Diagram

    BLOCK DIAGRAM IC401(MONO) TU201 PLL/VST TUNER AUDIO AMP IC701 HP AMP AUDIO SERVICE CONNECTOR IC500 EEPROM IC501 IC403 IC900 (MEMORY) RGB AMP CONTROLLER VIDEO PROCESSOR KEYPAD SENSOR IC600 VER. DEFL. VIDEO VER AMP +115V B+ SWITCHING CIRCUITS +12V IC800 Q603 HOR.

  • Page 24: Circuit Diagrams

    CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM (1/7) MAIN PWB ASS'Y (1/7) VE-20161045 (AV-21RM4SN) VE-20161041 (AV-21RM4SP) VE-20161048 (AV-21RM4SE) VE-20161051 (AV-20RM4SE) (No.YA080)2-5 2-6(No.YA080)
  • Page 25 MAIN PWB CIRCUIT DIAGRAM (2/7) MAIN PWB ASS'Y (2/7) VE-20161045 (AV-21RM4SN) VE-20161041 (AV-21RM4SP) VE-20161048 (AV-21RM4SE) VE-20161051 (AV-20RM4SE) (No.YA080)2-7 2-8(No.YA080)
  • Page 26 MAIN PWB CIRCUIT DIAGRAM (3/7) MAIN PWB ASS'Y (3/7) VE-20161045 (AV-21RM4SN) VE-20161041 (AV-21RM4SP) VE-20161048 (AV-21RM4SE) VE-20161051 (AV-20RM4SE) (No.YA080)2-9 2-10(No.YA080)
  • Page 27 MAIN PWB CIRCUIT DIAGRAM (4/7) MAIN PWB ASS'Y (4/7) VE-20161045 (AV-21RM4SN) VE-20161041 (AV-21RM4SP) VE-20161048 (AV-21RM4SE) VE-20161051 (AV-20RM4SE) (No.YA080)2-11 2-12(No.YA080)
  • Page 28 MAIN PWB CIRCUIT DIAGRAM (5/7) SW TRANSFORMER POWER REG. MAIN PWB ASS'Y (5/7) VE-20161045 (AV-21RM4SN) VE-20161041 (AV-21RM4SP) VE-20161048 (AV-21RM4SE) VE-20161051 (AV-20RM4SE) (No.YA080)2-13 2-14(No.YA080)
  • Page 29 MAIN PWB CIRCUIT DIAGRAM (6/7) MAIN PWB ASS'Y (6/7) VE-20161045 (AV-21RM4SN) VE-20161041 (AV-21RM4SP) VE-20161048 (AV-21RM4SE) VE-20161051 (AV-20RM4SE) (No.YA080)2-15 2-16(No.YA080)
  • Page 30 MAIN PWB CIRCUIT DIAGRAM (7/7) MAIN PWB ASS'Y (7/7) VE-20161045 (AV-21RM4SN) VE-20161041 (AV-21RM4SP) VE-20161048 (AV-21RM4SE) VE-20161051 (AV-20RM4SE) (No.YA080)2-17 2-18(No.YA080)

  • Page 31: Headphone Jack Pwb Circuit Diagram

    HEADPHONE JACK PWB CIRCUIT DIAGRAM FRONT AV JACK PWB CIRCUIT DIAGRAM HEADPHONE JACK PWB FRONT AV JACK PWB VE-20165426 VE-20166161 (No.YA080)2-19 2-20(No.YA080)

  • Page 32: Pattern Diagrams

    PATTERN DIAGRAMS MAIN PWB PATTERN FRONT CRT SOCKET PWB PATTERN (Within MAIN PWB) (No.YA080)2-21 2-22(No.YA080)

  • Page 33: Headphone Jack Pwb Pattern

    HEADPHONE JACK PWB PATTERN (No.YA080)2-23...

  • Page 34: Front Av Jack Pwb Pattern

    FRONT AV JACK PWB PATTERN 2-24(No.YA080)
  • Page 35 USING P.W. BOARD & REMOTE CONTROL UNIT ....................3-1 EXPLODED VIEW PARTS LIST ..........................3-2 EXPLODED VIEW ............................... 3-3 PRINTED WIRING BOARD PARTS LIST [AV-20RM4SE] ..................3-4 MAIN P.W. BOARD ASS’Y (VE-20161051)......................3-4 FRONT AV JACK P.W. BOARD ASS’Y (VE-20166161) [COMMON)] ............... 3-6 HEADPHONE JACK P.W.

  • Page 36: Exploded View Parts List

    EXPLODED VIEW PARTS LIST [ AV-20RM4SE ]  Ref.No. Part No. Part Name Description Local  V01 VE-30002748 PICTURE TUBE(ITC) Inc. DY, PC MAGNET  L01 VE-30002119 DEG COIL&EARTH CB.  TR601 VE-30017788 TRF FBT within MAIN PWB  1...

  • Page 37: Exploded View

    EXPLODED VIEW (x6) CRT SOCKET PWB (within MAIN PWB) TR601 FRONT AV JACK MAIN PWB HEADPHONE JACK (No.YA080)3-3...

  • Page 38: Printed Wiring Board Parts List [Av-20Rm4Se]

    PRINTED WIRING BOARD PARTS LIST [AV-20RM4SE] MAIN P.W. BOARD ASS’Y (VE-20161051) Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local D901 VE-30001318 DIODE D902 VE-30001318 DIODE D903 VE-30001344 DIODE ZENER IC118 VE-30023137 IC401...
  • Page 39 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C543 VE-30000205 CAP CER 150PF 50V J SL R128 VE-30000471 RES CF 1/4W 10K J C545 VE-30012607 CAP SMD 150PF 50V J R129 VE-30012713 RES SMD 1/16W 75R J C603...

  • Page 40: Front Av Jack P.w. Board Ass'y (Ve-20166161) [Common)]

    Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R555 VE-30012659 RES SMD 1/16W 2.2K J L807 VE-30001992 FIXED COIL 10UH R556 VE-30012657 RES SMD 1/16W 1K J L810 VE-30001992 FIXED COIL 10UH R559 VE-30000470 RES CF...

  • Page 41: Printed Wiring Board Parts List [Av-21Rm4Se]

    PRINTED WIRING BOARD PARTS LIST [AV-21RM4SE] MAIN P.W. BOARD ASS’Y (VE-20161048) Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C114 VE-30016654 CAP SMD 100NF 16V K R C142 VE-30000384 CAP EL 2.2UF 50V M IC118 VE-30023137 C143...
  • Page 42 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C611 VE-30000092 CAP MKT 220NF 63V J R153 VE-30012657 RES SMD 1/16W 1K J C613 VE-30016085 CAP EL 10UF 63V 105° R201 VE-30012674 RES SMD 1/16W 27K J C615 VE-30000359...
  • Page 43 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R564 VE-30012641 RES SMD 1/16W 10K J F801 VE-30001731 FUSE 2.5A R601 VE-30000752 RES CF 1/4W 56K J J281 VE-30006712 FERRITE BEAD R602 VE-30000513 RES CF 1/4W 130K J L101...

  • Page 44: Printed Wiring Board Parts List [Av-21Rm4Sn]

    PRINTED WIRING BOARD PARTS LIST [AV-21RM4SN] MAIN P.W. BOARD ASS'Y (VE-20161045)FRONT AV Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local D902 VE-30001318 DIODE D903 VE-30001344 DIODE ZENER IC118 VE-30023137 IC401 VE-30013986 C101 VE-30016654 CAP SMD 100NF 16V K R...
  • Page 45 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C545 VE-30012607 CAP SMD 150PF 50V J R129 VE-30012713 RES SMD 1/16W 75R J C603 VE-30000384 CAP EL 2.2UF 50V M R130 VE-30000594 RES CF 1/4W 22K J C604 VE-30000345...
  • Page 46 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R556 VE-30012657 RES SMD 1/16W 1K J J313 VE-30001994 FIXED COIL 22UH R559 VE-30000470 RES CF 1/2W 10K J R560 VE-30012669 RES SMD 1/16W 22K J TR601 VE-30017788 TRF FBT...

  • Page 47: Printed Wiring Board Parts List [Av-21Rm4Sp]

    PRINTED WIRING BOARD PARTS LIST [AV-21RM4SP] MAIN P.W. BOARD ASS'Y (VE-20161041) Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local D890 VE-30001329 DIODE D893 VE-30001329 DIODE IC118 VE-30023137 D894 VE-30001329 DIODE IC401 VE-30013986 D900 VE-30001318 DIODE...
  • Page 48 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C523 VE-30012585 CAP SMD 2.2NF 50V K R R117 VE-30012713 RES SMD 1/16W 75R J C525 VE-30012566 CAP SMD 22PF 50V J R118 VE-30000792 RES CF 1/4W 75R J C530...
  • Page 49 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R526 VE-30012641 RES SMD 1/16W 10K J R906 VE-30000525 RES CF 1/2W 1.5K J R527 VE-30000718 RES CF 1/4W 4.7K J VE-30001213 RES FUSE 1/4W 1R J R919 R528...

  • Page 50: Packing Parts List

    PACKING PARTS LIST [ AV-20RM4SE ]  Ref.No. Part No. Part Name Description Local VE-50052497 CARTON BOX VE-20155640 SNOW BOX ASSY 4pcs in 1set VE-50030774 POLY BAG (1400*1000) VE-70000587 POLY BAG VE-30017763 REMOTE CONTROL UMIT RM-C1100  6 VE-50052496 INST BOOK...

  • Page 51: Packing

    PACKING (No.YA080)3-17...

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Av-21rm4seAv-21rm4snAv-21rm4sp

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