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JVC AV-28RH4BU Service Manual
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JVC AV-28RH4BU Service Manual

JVC AV-28RH4BU Service Manual

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SERVICE MANUAL
The following item for the AV-28RH4BU, AV-28RH4SU models were changed partly from
AV-28KH1BUF model. Therefore, this Service Manual describes only the SPECIFICATIONS,
SPECIFIC SERVICE INSTRUCTIONS & PARTS LIST.
For details other than those described in this manual, please refer to the AV-28KH1BUF model
SERVICE MANUAL (No.52139, 2003/9).
1 SPECIFICATIONS........................................................................................................................... 2
2 SPECIFIC SERVICE INSTRUCTIONS ........................................................................................... 3
3 PARTS LIST .................................................................................................................................... 5
1
COLOUR TELEVISION
AV-28RH4BU,
AV-28RH4SU
Supplementary
TABLE OF CONTENTS
COPYRIGHT © 2004 Victor Company of Japan, Limited
Preliminary
No.YA077
2004/10

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  • Page 1 AV-28RH4BU, AV-28RH4SU Supplementary The following item for the AV-28RH4BU, AV-28RH4SU models were changed partly from AV-28KH1BUF model. Therefore, this Service Manual describes only the SPECIFICATIONS, SPECIFIC SERVICE INSTRUCTIONS & PARTS LIST. For details other than those described in this manual, please refer to the AV-28KH1BUF model SERVICE MANUAL (No.52139, 2003/9).
  • Page 2 SPECIFICATIONS Content Item AV-28RH4BU / AV-28RH4SU Dimensions ( W×H×D ) 76.5 cm x 58.5 cm x 48.6 cm Mass 33.8kg TV RF System B/G, D/K, L/L’ Colour System TV Mode PAL / SECAM Video Mode PAL / SECAM / NTSC 3.58 / NTSC 4.43 Sound System A2(Germany system), NICAM(B/G, D/K, L/L’)
  • Page 3 SPECIFIC SERVICE INSTRUCTIONS DISASSEMBLY PROCEDURE REMOVING THE REAR COVER REMOVING THE POWER SWITCH PWB 1. Unplug the power cord. Removing the rear cover. 2. Remove the 10 screws marked [A]. 1. Remove the 2 screws marked [I], and remove the 3.
  • Page 4 4（No. YA077）...
  • Page 5 PARTS LIST USING P.W. BOARD & REMOTE CONTROL UNIT Model AV-28RH4BU AV-28RH4SU PWB ASS’Y MAIN PWB VE-20160399 VE-20144446 FEATURE BOX PWB VE-20147459 CRT SOCKET PWB LED PWB VE-20154915 VE-20161117 SIDE CONTROL PWB SWITCH PWB VE-20167596 POWER SWITCH PWB VE-20122229 VE-30017763...
  • Page 6 EXPLODED VIEW 6（No. YA077）...
  • Page 7 PACKING PACKING PARTS LIST  Ref.No. Part No. Part Name Description Local VE-50051238 CARTON BOX AV-28RH4BU VE-50051256 CARTON BOX AV-28RH4SU VE-20155898 CUSHION ASS’Y 4pcs in 1set VE-50042308 POLY BAG(1200*1050) VE-70000587 POLY BAG VE-30017763 REMOTE CONTROL UNIT(RM-C1100) VE-50051235 INST BOOK(EN/GE/FR/IT/SP/DU/POR) AV-28RH4BU ...
  • Page 8 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan Printed in Japan （No. YA077）...
  • Page 9 Supplementary The following items for the AV-28RH4BU and AV-28RH4SU were changed partly. Therefore, this service manual describes only the items which differ from those of the AV-28RH4BU and AV- 28RH4SU service manual. For details other than those described in this manual, please refer to the AV-28RH4BU and AV-28RH4SU service manual (No.YA077, 2005/2).
  • Page 10 SECTION 1 PRECAUTION Please refer to "AV-28RH4BU and AV-28RH4SU (No.YA077)" about this section. SECTION 2 SPECIFIC SERVICE INSTRUCTIONS Please refer to "AV-28RH4BU and AV-28RH4SU (No.YA077)" about this section. SECTION 3 DISASSEMBLY Please refer to "AV-28RH4BU and AV-28RH4SU (No.YA077)" about this section.
  • Page 11 V-SHIFT V-SIZE **** H-SHIFT **** H-SIZE S-COR LINRT ANGLE G2Cu TRAPEZ PARAB APSW U.COR L.COR TILT TRPZD NTSCHS TXTV EXT3 HS04_3 JVC52 **** **.**.**** SERVICE Fig.2 SECTION 5 TROUBLESHOOTING Please refer to "AV-28RH4BU and AV-28RH4SU (No.YA077)" about this section. (No.YA077B)1-3...
  • Page 12 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.YA077B) Printed in Japan...
  • Page 13 AV-28RH4BU ENGLISH FRANÇAIS AV-28RH4SU DEUTSCH ITALIANO CASTELLANO NEDERLANDS PORTUGUÊS COLOUR TELEVISION INSTRUCTIONS VICTOR COMPANY OF JAPAN, LIMITED TELEVISEUR COULEUR MANUEL D'INSTRUCTIONS FARBFERNSEHGERÄT BEDIENUNGSANLEITUNG TELEVISORE A COLORI ISTRUZIONI TELEVISOR A COLOR MANUAL DE INSTRUCCIONES KLEURENTELEVISIE GEBRUIKSAANWIJZING TELEVISOR A CORES INSTRUÇÕES 50051243 ©2004 VICTOR COMPANY OF JAPAN, LIMITED...

  • Page 14: Table Of Contents

    Contents Safety Precautions Safety Precautions ........... 1 1. Power Source Remote Control Buttons .......... 2 Control Panel Buttons ..........3 2. Power Cord Antenna Connections ..........3 Preparation ..............4 Before Switching on your TV ........4 3. Moisture and Water Switching the TV ON/OFF ........

  • Page 15: Remote Control Buttons

    Remote Control Buttons CAUTION...

  • Page 16: Control Panel Buttons

    Control Panel Buttons $95+%8 Wvqr‚ÃDƒˆ‡Ã Ur…€vhy $95+68 6ˆqv‚ÃDƒˆ‡Ã Ur…€vhy Crhqƒu‚r ASPIUÃ6W @YU" &21752/ 3$1(/ %877216 Hrˆ Q‚r… ÃQ…‚t…h€Ã ÃW‚yˆ€rà Antenna Connections...

  • Page 17: Preparation

    Preparation Before Switching on your TV Power connection Aerial Connections Features How to connect the external equipments Inserting batteries in the remote control handset Switching the TV ON/OFF You can operate your TV either using the remote control handset or directly using the TV onset buttons. To switch the TV on IMPORTANT: If no aerial signal is received at the selected program for a...

  • Page 18: Initial Settings

    6QTà DTà SVIIDIBà QG@6 T@ Initial Settings X6DU ÃÃÃÃÃÃÃà T‡h‡v‚ÃÃà 8uhryÃÃà Ih€r G6IBV6B@Ãà 6QTà DTà SVIIDIBà QG@6 T@ X6DU 8PVIUS`Ãà 8‚‡vˆr ÃÃÃÃÃÃÃà T‡h‡v‚ÃÃà 8uhryÃÃà Ih€r QSPBS6H ÃÃÃà ÃÃÃà ÃÃÃà ÃÃÃà ÃÃÃà ÃÃÃà " ÃÃÃà  " ÃÃÃà !" ÃÃÃà ÃÃÃà ÃÃÃà ÃÃÃà ÃÃÃÃ...
  • Page 19 TV auto power on/VCR image view: Downloading data to VCR: Operating with the onset buttons UWÃGvx 9‚y‚hqÃÃUWà ÃÃW8S à ‚‡vˆr à 8hpry Operating with Remote Control Direct Rec: UWÃGvx W8SÃv†ÃSrp‚…qvt...

  • Page 20: Menu System

    Menu System Picture Menu To change picture settings: QD8UVS@ 8‚y‚ˆ… Tuh…ƒr†† 8‚y‚ˆ…ÃUr€ƒ I‚v†rÃ…rqˆp‡v‚ a‚‚€ Factory Settings: QD8UVS@ Qvp‡ˆ…rÃH‚qr 7…vtu‡r†† 8‚‡…h†‡ 8‚y‚ˆ… Recalling Factory settings.: Tuh…ƒr†† Sound Menu To change sound settings:...
  • Page 21 Stereo Mode: Setting Volume: 6281' 9ROXPH %DODQFH Install (Installation) Menu %DVV 7UHEOH Setting Balance: Setting Bass Level: Menu Language Selection: /$1*8$*( Setting Treble Level: (QJOLVK 'HXWVFK )UDQoDLV (VSDxRO 3RUWXJXHV TPVI9 7h†† U…riyr C’ƒr…ÃT‚ˆq T‡r…r‚ÃH‚qr Country Selection: Hyper Sound:...
  • Page 22 &28175< (QJODQG UWÃGvx ,WDOLD 9‚y‚hqÃÃUWà ÃÃW8SÃArh‡ˆ…r à 1RUZD\ ‚‡vˆr à 1HGHUODQG 8hpry 3RUWXJDO Search: Tuning Menu: Standard: Colour system: UVIDIBÃÃÃÃÃÃ!!ÃÃÃ8! Q…‚t…h€€r Trh…pu T‡hqh…q 8‚y‚ˆ…Æ’†‡r€ Band, Channel: 7hq Fine tuning:...
  • Page 23 Name: Mode: Program Menu: Decoder (EXT-2): Store: QSPBS6H ÃÃÃÃ ÃÃÃÃ ÃÃÃÃ ÃÃÃÃ ÃÃÃÃ ÃÃÃÃ " ÃÃÃÃ  " ÃÃÃÃ !" ÃÃÃÃ ÃÃÃÃ ÃÃÃÃ ÃÃÃÃ ÃÃÃÃ ÃÃÃÃ ÃÃÃÃ Using the Decoder (EXT-2) function ÃÃÃÃ ÃÃÃÃ ÃÃÃÃ & ÃÃÃÃ  & ÃÃÃÃ !&...
  • Page 24 UWÃGvx 6VUPTUPS@ 9‚y‚hqÃÃUWà ÃÃW8S 6QTà DTà SVIIDIBà QG@6T@ à X6DU ‚‡vˆr à ÃÃÃÃÃÃÃà T‡h‡v‚ÃÃà 8uhryÃÃà Ih€r 8hpry To change a programme number (CHANGE): Feature Menu To delete a channel (DELETE): Autostore Menu: Sleep timer: X6SIDIBÃÄ Child lock: 6yyÃ…r†‡‚…rqÃ…‚t…h€€r†Ã vyyÃirÃr…h†rqÄ 8‚‡vˆr Ã...

  • Page 25: Other Features

    Blue Background During No-Signal: Teletext Other Features Sound Mute Stereo / Bilingual To operate Teletext Information on Screen To select a page of Teletext To Display the Time Picture Recalling Factory settings.: To Select Index Page VCR Control Buttons Searching for a teletext page while watching TV...
  • Page 26 For TOPTEXT: To Select Double Height Text To Reveal “concealed” Information To Stop Automatic Page Change To Select a Subcode Page To exit Teletext Fastext and Toptext For Fastext and Toptext:...

  • Page 27: Connect The External Equipments

    NTSC Playback Connect the External Equipments Via the Euroconnector Copy Facility T-V LINK compatible VCR Connecting Headphones RGB mode EXT-2 S Mode Via the RCA jacks Via the ANT (aerial) socket TV and Video Recoder (VCR)
  • Page 28 Connect the External Equipments Before connecting anything Wvqr‚ÃDƒˆ‡Ã Ur…€vhy 6ˆqv‚ÃDƒˆ‡Ã Ur…€vhy Crhqƒu‚r ASPIUÃ6W @YU"...

  • Page 29: Specifications

    Tips Specifications Care of the Screen Poor Picture No Picture Sound Remote Control RMS. No solution 9D H @IT D P IT X r v t u ‡Ã xt ...
  • Page 30 AV-28RH4BU AV-28RH4SU STANDARD CIRCUIT DIAGRAM CONTENTS BLOCK DIAGRAMS CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM 2-15 FEATURE BOX PWB CIRCUIT DIAGRAM 2-19 CRT SOCKET PWB CIRCUIT DIAGRAM 2-20 FRONT CONTROL PWB CIRCUIT DIAGRAM 2-20 LED PWB CIRCUIT DIAGRAM 2-20 POWER SWITCH PWB CIRCUIT DIAGRAM 2-21 AV &...
  • Page 31 2-2(No.YA077)
  • Page 32 BLOCK DIAGRAM 150V/160V +22V +14V IC804 +14V(audio) SMPS -14V(audio) MC 44608 ACTIVE PFC MC 33260 +3.3V Saw Filter +3.3V (ST-BY) Sound IC750 +2.5V (ST-BY) PROM) D0-D7 TU200 IC954 IC752 MAIN TUNER IC751 SDA5550M 9885/86 (PLL) (MicroController) (EPROM) A0-A18 A0-A18 SRAM HORIZONTAL 30KV Horz.
  • Page 33 CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM (1/4) MAIN PWB ASS'Y (1/4) VE-20160399 (No.YA077)2-5 2-6(No.YA077)
  • Page 34 MAIN PWB CIRCUIT DIAGRAM (2/4) MAIN PWB ASS'Y (2/4) VE-20160399 (No.YA077)2-7 2-8(No.YA077)
  • Page 35 MAIN PWB CIRCUIT DIAGRAM (3/4) MAIN PWB ASS'Y (3/4) VE-20160399 (No.YA077)2-9 2-10(No.YA077)
  • Page 36 MAIN PWB CIRCUIT DIAGRAM (4/4) MAIN PWB ASS'Y (4/4) VE-20160399 (No.YA077)2-11 2-12(No.YA077)
  • Page 37 FEATURE BOX PWB CIRCUIT DIAGRAM (1/3) FEATURE BOX PWB (1/3) VE-20144446 (No.YA077)2-13 2-14(No.YA077)
  • Page 38 FEATURE BOX PWB CIRCUIT DIAGRAM (2/3) FEATURE BOX PWB (2/3) VE-20144446 (No.YA077)2-15 2-16(No.YA077)
  • Page 39 FEATURE BOX PWB CIRCUIT DIAGRAM (3/3) FEATURE BOX PWB (3/3) VE-20144446 (No.YA077)2-17 2-18(No.YA077)
  • Page 40 CRT SOCKET PWB CIRCUIT DIAGRAM FRONT CONTROL PWB CIRCUIT DIAGRAM CRT SOCKET PWB ASS'Y VE-20147459 FRONT CONTROL PWB ASS'Y VE-20167596 LED PWB CIRCUIT DIAGRAM LED PWB ASS'Y VE-20154915 POWER SWITCH PWB CIRCUIT DIAGRAM POWER SWITCH PWB ASS'Y VE-20122229 (No.YA077)2-19 2-20(No.YA077)
  • Page 41 AV &HEADPHONE PWB CIRCUIT DIAGRAM AV & HEADPHONE PWB ASS'Y VE-20161117 (No.YA077)2-21 2-22(No.YA077)
  • Page 42 PATTERN DIAGRAMS MAIN PWB PATTERN FRONT (No.YA077)2-23 2-24(No.YA077)
  • Page 43 FEATURE BOX PWB PATTERN FRONT (No.YA077)2-25 2-26(No.YA077)
  • Page 44 CRT SOCKET PWB PATTERN [SOLDER SIDE] FRONT CONTROL PWB PATTERN AV & HEAD PHONE PWB PATTERN CRT SOCKET PWB PATTERN [PARTS SIDE] (No.YA077)2-27 2-28(No.YA077)
  • Page 45 LED PWB PATTERN POWER SWITCH PWB PATTERN FRONT (No.YA077)2-29 2-30(No.YA077)
  • Page 46 POWER SWITCH P.W. BOARD ASS’Y (VE-20122229).................. 3-10 FRONT CONTROL P.W. BOARD ASS’Y (VE-20167596)................3-10 LED P.W. BOARD ASS’Y (VE-20154915)......................3-10 PACKING ................................... 3-11 PACKING PARTS LIST ............................. 3-11 USING P.W. BOARD & REMOTE CONTROL UNIT AV-28RH4BU P.W.B ASS’Y name AV-28RH4SU MAIN PWB VE-20160399 FEATURE BOX PWB...

  • Page 47: Exploded View Parts List

    EXPLODED VIEW PARTS LIST [AV-28RH4BU]  Ref.No. Part No. Part Name Description Local  V01 VE-30002754 PICTURE TUBE(ITC) Inc. DY, PC MAGNET  L01 VE-30029994 DEG COIL&EARTH  TR101 VE-30017521 TRF FBT within MAIN PWB  1 VE-20160977 FRONT CABINET...

  • Page 48: Exploded View

    EXPLODED VIEW (x4) (x10) CRT SOCKET FEATURE BOX TR101 CONTROL PWB POWER SWITCH MAIN PWB AV & HEADPHONE LED PWB (No.YA077)3-3...

  • Page 49: Printed Wiring Board Parts List

    PRINTED WIRING BOARD PARTS LIST MAIN P.W. BOARD ASS’Y (VE-20160399) Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local D808 VE-30001288 DOIDE D809 VE-30001285 DIODE IC100 VE-30013687 VE-20108354 BRIDGE DIODE D810 IC401 VE-30018422 D811 VE-30009366 DIODE...
  • Page 50 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C253 VE-30012607 SMD CAPACITOR 150PF 50V J C857 VE-30000375 EL CAPACITOR 220UF 16V M C256 VE-30012607 SMD CAPACITOR 150PF 50V J C858 VE-30016654 SMD CAPACITOR 100NF 16V K R C261 VE-30012607...
  • Page 51 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R169 VE-30000572 CF RESISTOR 1/4W 2K J R955 VE-30012510 SMD RESISTOR 1/16W 100R J R171 VE-30000626 SMD RESISTOR 1/10W 270R J R958 VE-30012698 SMD RESISTOR 1/16W 5.6K J R180 VE-30001077...

  • Page 52: Feature Box P.w. Board Ass'y (Ve-20144446)

    FEATURE BOX P.W. BOARD ASS’Y (VE-20144446) Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C424 VE-30016654 SMD CAPACITOR 100NF 16V K R C425 VE-30012581 SMD CAPACITOR 1NF 50V K R IC400 VE-30018263 C436 VE-30000371 EL CAPACITOR...
  • Page 53 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C651 VE-30000345 EL CAPACITOR 10UF 50V M R404 VE-30012692 SMD RESISTOR 1/16W 4.7K J C652 VE-30000345 EL CAPACITOR 10UF 50V M R405 VE-30012510 SMD RESISTOR 1/16W 100R J C653 VE-30012610...
  • Page 54 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R663 VE-30012641 SMD RESISTOR 1/16W 10K J R825 VE-30012510 SMD RESISTOR 1/16W 100R J R664 VE-30012649 SMD RESISTOR 1/16W 150R J R826 VE-30012641 SMD RESISTOR 1/16W 10K J R665 VE-30012713...

  • Page 55: Crt Socket P.w. Board Ass'y (Ve-20147459)

    CRT SOCKET P.W. BOARD ASS’Y (VE-20147459) Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R104 VE-30000594 CF RESISTOR 1/4W 22K J R106 VE-30000712 CF RESISTOR 1/4W 470R J IC900 VE-30018768 R107 VE-30000551 CF RESISTOR 1/4W 18R J R108...

  • Page 56: Packing

    4pcs in 1set VE-50042308 PLOY BAG (1200x 1050) VE-70000587 POLY BAG VE-30017763 REMOTE CONTROL UNIT RM-C1100  6 VE-50051235 INST BOOK [ENG/GER/FRE/ITA/SPA/DUT/POR] AV-28RH4BU  6 VE-50051243 INST BOOK [ENG/GER/FRE/ITA/SPA/DUT/POR] AV-28RH4SU  7 VE-50051236 INST BOOK [SWE / NOR / DAN /FIN] AV-28RH4BU ...

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