Download
Share
Print this page
  1. Manuals
  2. Brands
  3. JVC Manuals
  4. TV
  5. AV28R25EKS/C
  6. Service manual

JVC AV28R25EKS/C Service Manual

Hide thumbs

Advertisement

Quick Links

Download this manual
SERVICE MANUAL
7
2003
51941C
The following items for the AV28R25EKS/C model were changed from those of the AV28R25EKS model.
Therefore, this service manual describes mainly the items which differ from those of the AV28R25EKS
service manual.
But the difference of all the PWB ASS'Y are too much, so Electrical Parts List, Circuit Diagrams and
Pattern Diagrams of all the PWB ASS'Y are described every information. For details other than those
described in this manual, please refer the AV28R25EKS service manual (No. 51941, Mar. 2002) (No.51941B
Aug. 2002).
HOW TO IDENTIFY MODELS
"C" is added to the serial No. after at the Rating label.
COLOUR TELEVISION
AV28R25EKS
Supplementary
MODEL
AV28R25EKS
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
/C
SERIAL No.
BASIC CHASSIS
JL2
Indicated
"C"
No.51941C
2003/7

Advertisement

loading

Related Manuals for JVC AV28R25EKS/C

Summary of Contents for JVC AV28R25EKS/C

  • Page 1 AV28R25EKS BASIC CHASSIS Supplementary The following items for the AV28R25EKS/C model were changed from those of the AV28R25EKS model. Therefore, this service manual describes mainly the items which differ from those of the AV28R25EKS service manual. But the difference of all the PWB ASS’Y are too much, so Electrical Parts List, Circuit Diagrams and Pattern Diagrams of all the PWB ASS’Y are described every information.
  • Page 2 DIFFERENCE LIST USING P.W. BOARD (Page 30) P.W.B ASS’Y name AV28R25EKS AV28R25EKS/C DESCRIPTION ← MAIN PWB SJL-1005A-U2 SJL-1201A-U2 Non compatible POWER & DEF. PWB SJL-2003A-U2 SJL-2003A-H3 SJL-2201A-U2 Non compatible CRT SOCKET PWB SJL-3001A-U2 SJL-3001A-H3 SJL-3201A-U2 Non compatible FRONT CONTROL PWB...
  • Page 3 PRINTED WIRING BOARD PARTS LIST  Ref. No. MAIN PW BOARD ASS’Y (SJL-1201A-U2) Parts No. Parts Name Description Local  Ref. No. Parts No. Parts Name Description Local D703 MA111-X SI DIODE D704 MA3068/M/-X Z DIODE IC301 TB1227CN D705 MA111-X SI DIODE IC302 AN5860...
  • Page 4  Ref. No.  Ref. No. Parts No. Parts Name Description Local Parts No. Parts Name Description Local C631 QETN1HM-106Z E CAPACITOR 10uF 50V M R404 NRSA63J-183X MG RESISTOR 18kΩ 1/16W J C632 QETN1HM-106Z E CAPACITOR 10uF 50V M R405 NRSA63J-223X MG RESISTOR 22kΩ...
  • Page 5  Ref. No.  Ref. No. Parts No. Parts Name Description Local Parts No. Parts Name Description Local R719 NRSA63J-472X MG RESISTOR 4.7kΩ 1/16W J CN0SW QGA2501C5-03Z CONNECTOR W-B (1-3) R720 NRSA63J-472X MG RESISTOR 4.7kΩ 1/16W J HS601 GG30028-001A-H HEAT SINK R721 NRSA63J-221X MG RESISTOR...
  • Page 6  Ref. No.  Ref. No. Parts No. Parts Name Description Local Parts No. Parts Name Description Local PC541 PC817CD PHOTO COUPLER R420 QRE141J-394Y C RESISTOR 390kΩ 1/4W J PC901 PC123Y22 PHOTO COUPLER R421 QRE141J-223Y C RESISTOR 22kΩ 1/4W J R461 QRE141J-331Y C RESISTOR...
  • Page 7  Ref. No.  Ref. No. Parts No. Parts Name Description Local Parts No. Parts Name Description Local CP954 ICP-N75-Y IC PROTECTOR 2.7A R3114 NRSA63J-470X MG RESISTOR 47Ω 1/16W J CP955 ICP-N75-Y IC PROTECTOR 2.7A R3115 NRSA63J-470X MG RESISTOR 47Ω 1/16W J HS001 CEHT12N-026PS HEAT SINK...
  • Page 8  Ref. No.  Ref. No. Parts No. Parts Name Description Local Parts No. Parts Name Description Local CN800W CHGH0001-0H CONNECTOR ASSY C210 NCF31AZ-105X C CAPACITOR 1uF 10V Z CN80PW QGAB801C1-02 CONNECTOR W-B (1-2) C302 NCB31CK-104X C CAPACITOR 0.1uF 16V K CN8101 QGF1220C2-19 CONNECTOR...
  • Page 9  Ref. No.  Ref. No. Parts No. Parts Name Description Local Parts No. Parts Name Description Local R306 NRSA63J-562X MG RESISTOR 5.6kΩ 1/16W J D0107 MA3120/M/-X Z DIODE R307 NRSA63J-562X MG RESISTOR 5.6kΩ 1/16W J D0108 MA3120/M/-X Z DIODE R308 NRSA63J-471X MG RESISTOR...
  • Page 10  Ref. No.  Ref. No. Parts No. Parts Name Description Local Parts No. Parts Name Description Local R0110 NRSA63J-823X MG RESISTOR 82kΩ 1/16W J R0630 NRSA63J-101X MG RESISTOR 100Ω 1/16W J R0112 NRSA63J-823X MG RESISTOR 82kΩ 1/16W J R0651 NRSA63J-331X MG RESISTOR 330Ω...
  • Page 11 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan (No.51941C) Printed in Japan...
  • Page 12 SCHEMATIC DIAGRAMS COLOUR TELEVISION AV28R25EKS BASIC CHASSIS CD-ROM No.SML200308 MENU No.51941C COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD. 2003/7...
  • Page 13 AV28R25EKS CONTENTS SEMICONDUCTOR SHAPES ..............2-2 STANDARD CIRCUIT DIAGRAM BLOCK DIAGRAM ..................2-3 NOTE ON USING CIRCUIT DIAGRAMS CIRCUIT DIAGRAMS ..................2-5 1.SAFETY Type MAIN PWB CIRCUIT DIAGRAM ........................ 2-5 The components identified by the symbol and shading are No indication :Ceramic capacitor AV SW PWB CIRCUIT DIAGRAM ......................
  • Page 14 BLOCK DIAGRAM IC3106 B OUT TU001 YORCB/CORCV IC301 IC702 TUNER VIDEO / DEF PROCESS MEMORY IC701 IC3105 MI-COM & R OUT TELETEXT DECODER H OUT IC501 DEF CONT. IC3104 G OUT V OUT REMOCON IC601 AUDIO OUT SP C VM COIL CRT SOCKET IC602 MAIN PWB...
  • Page 15 CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM (1/2) SHEET 1 OPEN CN0RT IC551 ROTATION SJL-1201A-U2 IC701 19 IC701 IC701 34 35 CN016 SIDE CONTROL R551 PIN NO. VOLTAGE (V) PIN NO. VOLTAGE (V) CN001 R1/2 IC551 C553 QGF1220C2-19 R552 R560 R553 R556 HP_DET C551...
  • Page 16 MAIN PWB CIRCUIT DIAGRAM (2/2) SHEET 2 CN006 CN012 QGB1505J1-40 QGB1505J1-50 R658 Y606 OPEN Y613 OPEN PIN NO. VOLTAGE (V) PIN NO. VOLTAGE (V) C010 Y611 OPEN IC301 IC602 Y612 L671 J601 OPEN OPEN Y601 Y614 R007 Q002 IC671 OPEN R009 BA17805T C673...
  • Page 17 AV SW PWB CIRCUIT DIAGRAM SHEET 3 C0677 SJL0S201A-U2 C0616 C0629 100/16 10/50 C0678 C0631 R0606 C0630 .001 OMF1 C0617 .001 .1/16 D0601 RD8.2E/B2/-T2 R0628 C0618 10/50 R0651 Q0601 C0645 DTC144EKA-X C0619 .1/16 LC0601 L0605 QQL244K-4R7Z NQR0431-001X C0620 10/50 IC0603 C0647 IC0101 23 40 43 45 MSP3415DQGB3GHX...
  • Page 18 POWER & DEF PWB CIRCUIT DIAGRAM SHEET 4 MAIN PWB MAIN PWB MAIN PWB CN005 CN004 CN003 QGB1506M1-16 QGB1506M1-16 QGB1506M1-16 PIN NO. VOLTAGE (V) IC401 12.2 10.7 K501 OPEN 12.3 OPEN CN010 IC901 R492 D491 1SS133-T2 K502 OPEN AU_GND C491 R493 18.9 1/50...
  • Page 19 CRT SOCKET PWB CIRCUIT DIAGRAM SHEET 5 SJL-3201A-U2 R3121 L3103 OMF2 H3106 QRG01GJ-101 CN3008 QJK002-083633 R3130 R3118 OMF1 OMF2 Q3106 C3104 2SC4544-LB R3127 C3105 100/16 47/25 QRZ0107-102Z TP-47B R3103 Q3103 C3103 390p R3109 3.9k R3112 R3120 R3115 OMF2 L3102 SK3001 Q3105 2SC4544-LB R3117...
  • Page 20 FRONT CONTROL PWB CIRCUIT DIAGRAM SHEET 6 SJL-8201A-U2 IC8851 GP1U281Q C8851 .1/16 R8804 C8852 Q8801 Q8802 100/16 Q8803 D8851 MA3068/M/-X R8803 R8801 OPEN R8851 R8802 1.5k D8801 SPR-39MVWF POWER & DEF CN800W CHGH0001-0H-N LF8901 Y8905 QQR1095-001 OPEN Y8907 OPEN Y8908 Y8906 OPEN OPEN...
  • Page 21 SIDE CONTROL PWB CIRCUIT DIAGRAM SHEET 7 QSW0619-003Z J8001 J8303 SJL-8101A-U2 QMS3001-C01 QNZ0438-001 S8002 QNZ0438-001 QNZ0438-001 QNZ0438-001 R8011 R4IN L4IN V4IN 3.9k J8303 J8303 J8303 S8003 R8012 S8001 C8001 R8010 R8317 C8310 C8311 C8002 .0047 .0047 R8316 R8315 OPEN OPEN Y8001 OPEN R8022...
  • Page 22 DOLBY PWB CIRCUIT DIAGRAM SHEET 8 R118 IC102 S-80828ANNP-W C301 R506 Q101 C508 R509 R117 J001 DTC124EKA-X 47/16 100k R119 OPEN OPEN R307 R306 R508 QNN0294-001 C304 C303 R512 C507 L501 C509 R110 R510 C505 C302 10/50 NQL085J-100X R116 C305 C504 .0022 C131...
  • Page 23 PATTERN DIAGRAMS MAIN PWB PATTERN [SOLDER SIDE] L672 Y611 CN00S R639 C619 Q612 R672 R638 R629 R640 R671 R642 R625 Y601 Y602 CN012 C617 R641 Q671 CN0SW R643 C618 Y616 R673 R626 R627 Y613 D611 Q613 R674 Q622 Q616 Q619 Y615 L671 R662...
  • Page 24 MAIN PWB PATTERN [PARTS SIDE] FRONT No.51941C 2-23 2-24 No.51941C...
  • Page 25 POWER & DEF PWB PATTERN R542 Q542 R461 W221 D981 D964 R462 R548 CN005 R493 CN004 CN003 L953 W213 C967 W215 C993 R541 Q546 W208 W418 R409 R492 D491 C970 C969 W413 C401 Q541 W417 Q463 W401 R463 D403 C407 W411 L952 R464...
  • Page 26 CRT SOCKET PWB PATTERN SIDE CONTROL PWB PATTERN W3003 Q3106 W3204 K3304 R3118 C3310 W3406 R3120 R3121 C3103 R3117 R3115 R3112 Q3102 R3329 R3129 R3126 W3407 R3108 D3302 TP-47B W3404 W3007 K3303 C3113 TP-47R R3154 D3163 R3326 D3156 Q3307 R3324 R3153 C3314 R3325...
  • Page 27 DOLBY PWB PATTERN [SOLDER SIDE] DOLBY PWB PATTERN [PARTS SIDE] C154 Q502 C308 R503 C129 C206 C206 IC102 C130 L502 C308 C128 R504 C503 R502 R501 R517 C121 C510 R221 R511 C128 R305 C506 C506 IC302 C122 C127 R201 C121 R207 R109 D501...
  • Page 28 AV SW PWB PATTERN C0630 C0678 Q0112 C0631 Q0111 D0601 C0629 C0659 C0660 W207 C0621 W410 C0677 C0616 D0112 R0203 C0622 C0651 R0633 W215 W209 R0170 C0619 C0147 W208 R0188 R0635 C0632 R0174 C0110 R0634 W214 R0651 C0653 R0173 Q0118 R0176 R0632 C0129...
  • Page 29 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan (No.51941C) Printed in Japan...

  • Page 30: Table Of Contents

    AV28 R25EKS AV28 R250EKS SERVICE MANUAL COLOUR TELEVISION AV28R25EKS BASIC CHASSIS AV28R250EKS CONTENTS ! SPECIFICATIONS ･･ ･････ ････････ ･･ ･･････ ･･････ ･･･ ･･ ･･･ ･･ ･･ ･･ ･･ ････ ･･ ････ ･･ ････ 2 ･･ ･･･････ ････････ ･･ ･･････ ･･ ･･ ･･･ ･･...

  • Page 31: Specifications

    AV28R25EKS AV28R250EKS SPECIFICATIONS Content Item AV28R25EKS / AV28R250EKS Dimensions ( W× × × × H× × × × D ) 854mm× 507.5mm×493.5mm Mass 43.0kg TV RF System CCIR ( I ) Colour System NTSC (Only in EXT mode) Stereo System NICAM Teletext System FLOF (Fastext)
  • Page 32 AV28R25EKS AV28R250EKS ■ ■ ■ ■ 21-pin Euro connector (SCART socket) : EXT-1 / EXT-2 / EXT-3 (P-P= Peak to Peak, S-W= Sync tip to white peak, B-W= Blanking to white peak) Signal Designation Matching Value EXT-1 EXT-2 EXT-3 No . AUDIO R output 500mVrms(Nominal), ○...

  • Page 33: Safety Precautions

    AV28R25EKS AV28R250EKS SAFETY PRECAUTIONS 1. The design of this product c ontains special hardware and many have these special safety c harac teristic s are identified in the circuits and components specially for safety purposes. For Parts List of Service Manual. Electrical components having suc h features are identified by shading on the schematic s and by ( ! ) continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer.

  • Page 34: Features

    AV28R25EKS AV28R250EKS FEATURES " By preferenc e, users can select the picture size from REGULAR, " Users can make VCR dubbing of picture and sound by controlling PANORAMIC, FULL, 14:9 ZOOM, 16:9 ZOOM, 16:9 ZOOM SUB the AV selec tor to select an optional sourc e at the EXT-2 output TITLE modes.

  • Page 35: Specific Service Instructions

    AV28R25EKS AV28R250EKS SPECIFIC SERVICE INSTRUCTIONS DISASSEMBLY PROCEDURE REMOVING THE REAR COVER REMOVING THE SIDE SPEAKER 1. Unplug the power c ord. " After removing the rear cover. 2. Remove the SUB WOOFER CORD from the AV TERMINAL. 1. Remove the 2 screws marked E, and remove the speaker holder 3.
  • Page 36 AV28R25EKS AV28R250EKS FRONT CABINET SIDE SPEAKER POWER & DEF. SOCKET AV SW CLAW CHASSIS AV TERMINAL FRONT BOARD CONT ROL Fig.4 CONT ROL BASE CLAW MAIN DOLBY CENTER SPEAKER (×5) Fig.2 ( × 2) SIDE CONTROL JACK ASSEMBLY POWER CORD SUB WOOFER UNIT REAR COVER SUB WOOFER CORD...
  • Page 37 AV28R25EKS AV28R250EKS REMOVING THE CRT ∗ Replacement of the CRT should be performed by 2 or more pers ons. CRT CHANGE TABLE • After removing the c over, chassis etc., 1. Putting the CRT c hange table on soft cloth, the CRT change table should also be c overed with s uch soft cloth (shown in Fig.5).
  • Page 38 1. DESTINATION : EK INFORMATION key and MUTING key s imultaneously, and the SYSTEM CONSTANT SET screen of Fig. 2 will be display ed. JVC JL EURO V00 *** **** 4) Check the setting values of the SYSTEM CONSTANT SET of Table 1.
  • Page 39 AV28R25EKS AV28R250EKS SETTING VALUES OF SYSTEM CONSTANT SET (TABLE 1) Setting item Setting content Setting value Setting item Setting content Setting value 1.DESTINATION 5.COMB 2.DOLBY 6.PICTUR TILT 3.BBE 7.FLAT 4.TV SPEAKER 8.3-D USER SETTING VALUES (TABLE 2) SOUND LEVEL SUB POWER SHIPPING CHANNEL ZOOM MODE PANORAMIC...
  • Page 40 AV28R25EKS AV28R250EKS REPLACEMENT OF CHIP COMPONENT ! 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 c hip part, melt the s older adequately. 4.

  • Page 41: Service Adjustments

    AV28R25EKS AV28R250EKS SERVICE ADJUSTMENTS BEFORE STARTING SERVICE ADJUSTMENT 1. There ar e 2 ways of adjusting this TV: One is with the 6. Never touch parts (such as variable resistors, transformers and REMOTE CONTROL UNIT and the other is the conventional condensers) not shown in the adjustment items of this servic e method using adjustment parts and components.
  • Page 42 AV28R25EKS AV28R250EKS ADJUSTMENT LOCATIONS SIDE CONTROL PWB HE AD FRONT CONTROL PWB PH O NE FRONT S- IN F 8 9 0 1 C N0 0 1 D OW N C N0 1 6 PO W E R SW M EN U FRONT FRONT MAIN PWB...
  • Page 43 AV28R25EKS AV28R250EKS BASIC OPERATION SERVICE MENU 1. TOOL OF SERVICE MENU OPERATION Operate the SERVICE MENU with the REMOTE CONTROL UNIT. 2. SERVICE MENU ITEMS With the SERVICE MENU, various settings (adjustments) c an be made, and they are broadly c lassified in the following items of settings (adjus tments ): (1) 1.
  • Page 44 AV28R25EKS AV28R250EKS S E RVICE M E NU SER VIC E MENU Do n ot ad just 1. IF 2. V/C 7. SHIPPING 3. AUDIO 4. DEF 5. VSM PRESET 6. VPS 7. SHIPPING(OF F) 7. SHPIING ( OFF) 7. SHIPPING (O N) 1-7 : SELECT i : EXIT 1.IF (VCO)
  • Page 45 AV28R25EKS AV28R250EKS (3) Method of Setting 1) Method of Setting 1.IF [VCO] ① 1 Key･･･････ ･････････････ ･････ Select 1.IF. ② The VCO (CW) screen will be displayed in yellow when the AFC voltage is at a certain level and in blue when it is at other levels. ③...
  • Page 46 AV28R25EKS AV28R250EKS ADJUSTMENTS CHECK ITEM Measuring Item Test point Ad justment part Description instrument POWER Signal TP-91(B1) 1. Receive a any broadcast. generator SUPPLY TP-E(" " " " ) 2. Push the “ZOOM” key and s elect the FULL mode. Check [X connector 3.
  • Page 47 AV28R25EKS AV28R250EKS IF CIRCUIT ADJUSTMENT Measuring Item Test point Ad justment part Description instrument " Under normal c onditions, no adjustment is required. Ad justment of Remote control unit 1. Receive any broadc ast. 2. Select 1.IF from the SERVICE MENU. 3.
  • Page 48 AV28R25EKS AV28R250EKS 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. Colour system Initial setting value Setting Item...
  • Page 49 AV28R25EKS AV28R250EKS Measuring Item Test point Ad justment part Description instrument " The adjustment for Low Light WHITE BALANCE should be Ad justment Signal 2.DRIVE of WHITE gener ator finished. (R)＊＊＊ " Set the PICTURE MODE to NORMAL. BALANCE (High Lig ht) Remote (B)＊＊＊...
  • Page 50 AV28R25EKS AV28R250EKS Measuring Item Test point Ad justment part Description instrument Ad justment Remote 5.COLOUR [Method of adjustm ent without m easuring instrument] of SUB control unit (PAL～ ～ ～ ～ NT SC) COLOURⅠ Ⅰ Ⅰ Ⅰ PAL COLOUR (PAL COLOUR) 1.
  • Page 51 AV28R25EKS AV28R250EKS Measuring Item Test point Ad justment part Description instrument Ad justment Signal TP-47B 5.COLOUR [Method of adjustm ent using measur ing instrument] of SUB gener ator TP-E(" " " " ) (PAL～ ～ ～ ～ NT SC) COLOUR Ⅱ Ⅱ Ⅱ Ⅱ [CRT Oscilloscope SOCKET...
  • Page 52 AV28R25EKS AV28R250EKS Measuring Item Test point Ad justment part Description instrument Ad justment Remote 6. HUE [Method of adjustm ent without m easuring instrument] control unit SUB HUE Ⅰ Ⅰ Ⅰ Ⅰ NTSC 3.58 HUE [NTSC 3.58 HUE] 1. Input a NTSC 3.58MHz COMPOSITE VIDEO signal (full field colour bar with 75% white) from the EXT terminal.
  • Page 53 AV28R25EKS AV28R250EKS DEFLECTION CIRCUIT ADJUSTMENT There are 6 modes of the adjustment. ( 1 ) 50Hz mode ( ① ① ① ① PANORAMIC ② ② ② ② FULL ③ ③ ③ ③ REGULAR ④ ④ ④ ④ 14:9 ZOOM ⑤ ⑤ ⑤ ⑤ 16:9 ZOOM ⑥ ⑥ ⑥ ⑥ 16:9 ZOOM SUB TITLE ) ( 2 ) 60Hz mode ( each aspect mode ) ････...
  • Page 54 AV28R25EKS AV28R250EKS Measuring Item Test point Ad justment part Description instrument Ad justment Signal 1. V- SHIFT [50Hz PANORAMIC mode] gener ator 1. Receive a circle pattern signal of vertic al frequency 50Hz. V-SHIFT 2. Select 4.DEF from the SERVICE MENU. Remote 3.
  • Page 55 AV28R25EKS AV28R250EKS Measuring Item Test point Ad justment part Description instrument Ad justment of 4.H-CENT. 13. Receive a c ircle pattern s ignal. HORIZONTAL 14. Select 4.H-CENT and set the initial s etting value. CENTER 15. Adjust H-CENT to make C=D. 16.
  • Page 56 AV28R25EKS AV28R250EKS Measuring Item Test point Ad justment part Description instrument Ad justment Signal 7.TRAPEZ 26. Receive a cross-hatch signal. gener ator of TRAPEZIUM 27. Select 7.TRAPEZ with the FUNCTION UP/DOWN key. 28. Set the initial setting value of TRAPEZIUM with the Remote control unit FUNCTION...
  • Page 57 AV28R25EKS AV28R250EKS H BLANKING ADJUSTMENT Measuring Item Test point Ad justment part Description instrument 1. Receive the PAL c ircle pattern signal. Ad justment of H.BLK 2. Select 4.DEF from the SERVICE MENU. HORIZONTAL Capacitor 3. Select the aspect [14:9 ZOOM] mode. BL ANKING [On MAIN PWB] 4.
  • Page 58 AV28R25EKS AV28R250EKS SCHEMATIC DIAGRAMS COLOUR TELEVISION BASIC CHASSIS AV28R25EKS AV28R250EKS CD-ROM No.SML200203 MENU CONTENTS NOTE ON USING CIRCUIT DIAGRAMS SEMICONDUCTOR SHAPES BLOCK DIAGRAM CIRCUIT DIAGRAMS PATTERN DIAGRAMS 2-19 No.51941 COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD. Mar. 2002...
  • Page 59 AV28R25EKS AV28R25EKS AV28R250EKS AV28R250EKS CONTENTS AV28R25EKS / AV28R250EKS STANDARD CIRCUIT DIAGRAM SEMICONDUCTOR SHAPES BLOCK DIAGRAM NOTE ON USING CIRCUIT DIAGRAMS CIRCUIT DIAGRAMS 1.SAFETY Type MAIN PWB CIRCUIT DIAGRAM The components identified by the symbol and shading are No indication :Ceramic capacitor POWER &...
  • Page 60 AV28R25EKS AV28R25EKS AV28R250EKS AV28R250EKS BLOCK DIAGRAM MAIN PWB CRT SOCKET PWB IC702 MEMORY TU001 TV VIDEO TUNER IC701 Q3104 MICRO COMPUTER Q3105 Q3106 IC301 YORCB/CORCV VIDEO V/C DEF R/G/B 2 ANA IN H.OUT IC501 EXT-1 IC603 DEF CONTROL MULTI SOUND VM COIL PROCESSOR Q3305...
  • Page 61 AV28R25EKS AV28R25EKS AV28R250EKS AV28R250EKS CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAMS [1/2] DOLBY PWB AV SW PWB CN006 CN012 QGB1505J1-40 QGB1505J1-50 R658 Y606 A_GND OPEN Y613 OPEN C010 OPEN Y611 Y612 L671 OPEN J601 OPEN IC671 Y601 Y614 R007 Q002 BA05T OPEN R009 C673...
  • Page 62 AV28R25EKS AV28R25EKS AV28R250EKS AV28R250EKS MAIN PWB CIRCUIT DIAGRAM [2/2] CN0RT IC551 LA6515 ROTATION CN016 7.3V 7.3V 6.4V 6.3V 0V 5.8V 5.8V 5.4V 5.4V 11.8V R551 CN001 1/2W C553 QGF1220C2-19 R552 R560 47/25 120k 100k R556 R553 150k R551,561 STB2.5V HP_DET QRK126J-100X HP_DET C554...
  • Page 63 AV28R25EKS AV28R25EKS AV28R250EKS AV28R250EKS POWER & DEF PWB CIRCUIT DIAGRAM MAIN PWB MAIN PWB MAIN PWB CN005 CN004 CN003 QGB1506M1-16 QGB1506M1-16 QGB1506M1-16 NOTE POWER & DEF PWB 2SC1740S/QR/-T 2SA933AS/QR/-T SJL-2003A-U2 1SS133-T2 K501 OPEN CN010 BUS WIRE TO DY OPEN NON MOUNT D491 R492 -12V...
  • Page 64 AV28R25EKS AV28R25EKS AV28R250EKS AV28R250EKS AV SW PWB CIRCUIT DIAGRAM C0677 AV SW PWB C0616 C0629 C0678 100/16 10/50 C0631 R0606 C0630 0.001 OMF1 C0617 0.001 .1/16 7.9V 0V 3.6V 3.6V 0V 2.0V 2.0V 0V D0601 RD8.2E/B2/-T2 R0628 SJL0S003A-U2 6.1V C0618 2.1V CAPL_M RESETQ...
  • Page 65 AV28R25EKS AV28R25EKS AV28R250EKS AV28R250EKS DOLBY PWB CIRCUIT DIAGRAM R118 IC102 S-80828ANNP-W C301 4.8V 47/25 OUT VDD GND R506 Q101 C508 R509 R117 J001 DTC124EKA-X 47/16 100k R119 4.7k AUDIO OUT 0.1V OPEN R307 R306 R508 QNN0294-001 R512 5.6k 5.6k C304 C303 C507 L501...
  • Page 66 AV28R25EKS AV28R25EKS AV28R250EKS AV28R250EKS CRT SOCKET PWB CIRCUIT DIAGRAM 130Vp-p (V) R3121 H3106 L3103 OMF2 CN008 QRG01GJ-101 CN3008 QJK002-083633 R3130 R3118 149.8V OMF1 OMF2 11.8V Q3106 C3104 2SC4544-LB R3127 C3105 11.6V 100/16 VIDEO AMP 47/25 QRZ0107-102Z 11.6V 2.8V TP-47B R3103 2.2V Q3103 C3103...
  • Page 67 AV28R25EKS AV28R25EKS AV28R250EKS AV28R250EKS FRONT CONTROL PWB CIRCUIT DIAGRAM SIDE CONTROL PWB CIRCUIT DIAGRAM SIDE CONTROL PWB FRONT CONTROL PWB SJL-8101A-U2 SJL-8003A-U2 S8001~S8003 QSW0619-003Z IC8851 EXT-4 J8001 MENU J8303 GP1U281Q QMS3001-C01 QNZ0438-001 REMOCON RECEIVER S8002 HEADPHONE JACK QNZ0438-001 QNZ0438-001 QNZ0438-001 CH DOWN R8011 R4IN...
  • Page 68 AV28R25EKS AV28R25EKS AV28R250EKS AV28R250EKS PATTERN DIAGRAMS MAIN PWB PATTERN L672 Y611 CN00S C619 Q612 R672 R639 R629 R638 R671 R640 R625 Y602 Y601 CN012 C617 R642 DOLBY Q671 R641 CN0SW R643 C618 R673 R626R627 Y613 D611 AVSEL Q613 R674 Q622 Q616 Q619 L671...
  • Page 69 AV28R25EKS AV28R25EKS AV28R250EKS AV28R250EKS POWER & DEF PWB PATTERN R542 Q542 R461 W221 LCB10025 -001A D964 D981 R462 R548 CN005 POW/DEF PWB R493 CN003 L953 CN004 W213 C967 W215 C993 R541 Q546 W208 W418 R409 R492 D491 C970 C969 W413 C401 W417 Q541...
  • Page 70 AV28R25EKS AV28R25EKS AV28R250EKS AV28R250EKS AV SW PWB PATTERN DOLBY PWB PATTERN (SOLDER SIDE) LCB10020 -001A DOLBY PWB C206 C308 C0630 C0678 C128 C0631 Q0111 Q0112 D0601 C506 C0629 C0659 W207 C0660 C121 C0621 W410 C0677 C0616 D0112 C301 R0203 C122 C0622 C0651 R0633...
  • Page 71 AV28R25EKS AV28R25EKS AV28R250EKS AV28R250EKS CRT SOCKET PWB PATTERN SIDE CONTROL PWB PATTERN C8004 W3003 Q3106 W3204 K3304 R3118 C3310 W3406 R3120 R3121 C3103 L8311 W8251 R3117 R3115 R8021 CN016 R8022 R8317 R3112 Q3102 R3329 C8311 R3129 R3126 C8005 R8001 W3407 C8003 R3108 LCB90002 -001A...
  • Page 72 VICTOR COMPANY OF JAPAN, LIMITED HOME AV NETWORK BUSINESS UNIT. 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa-prefecture, 221-8528, Japan Printed in Japan VP 0203 DP8080...
  • Page 73 AV28R25EKS AV28R250EKS PARTS LIST CAUTION ! The parts identified by the symbol are important for the s afety. Whenever replacing these parts, be s ure to use s pec ified ones to secure the safety . ! The parts not indic ated in this Parts List and those which are filled with lines 　　 in the Parts No. c olumns will not be supplied. ! P.
  • Page 74 AV28R25EKS AV28R250EKS ! ! ! ! USING PW BOARD & REMOTE CONTROL UNIT ･･･････ ･････････････ ････････････ ･･･････ ･････････････ ･････････････ ! ! ! ! EXPLODED VIEW PARTS LIST 31, 32 ･･･････ ･････････････ ･･･････････････････ ･････････････ ････････････ ･･･････ ････････ ! ! ! ! EXPLODED VIEW 31, 33 ･･･････...
  • Page 75 AV28R25EKS AV28R250EKS EXPLODED VIEW PARTS LIST (1) ! Ref.No. Part No. Part Name Description AV28R25EKS LC 412 50- 002 B-C JV C M ARK LC 318 51- 001B -C WI NDO W QA S00 92- 001 SP EAK ER SP 04 ! 24 LC 113 08- 001B -U SP BO X T...
  • Page 76 AV28R25EKS AV28R250EKS EXPLODED VIEW PARTS LIST (2) ! Ref.No. Part No. Part Name Description AV28R25EKS ! V0 1 W6 6QD E99 3X98 7 IT C In c.D Y,P C MA GNE T,WE DGE ! L0 1 QQ W01 37- 001 DE G C OIL ! T5 51 QQ H01 22- 001...
  • Page 77 AV28R25EKS AV28R250EKS EXPLODED VIEW (2) L0 1 CRT SOCKET FRONT POWER & DEF. CONT ROL PWB AV SW PWB T5 51 MAIN PWB SIDE DOLBY PWB CONT ROL PWB (×5) (×13) No.51941...
  • Page 78 AV28R25EKS AV28R250EKS AV28R25EKS / AV28R250EKS PRINTED WIRING BOARD PARTS LIST ■ ■ ■ ■ MAIN P.W. BOARD ASS’Y (SJL-1005A-U2) ! Symbol No. Part No. Part Name Description ! Symbol No. Part No. Part Name Description RESISTOR RESISTOR R552 NRSA63J-124X MG R 120kΩ...
  • Page 79 AV28R25EKS AV28R250EKS ! Symbol No. Part No. Part Name Description ! Symbol No. Part No. Part Name Description RESISTOR CAPACITOR R721 NRSA63J-221X MG R 220Ω 1/16W J C004 NCB31CK-104X C CAP. 0.1µF 16V K R722 NRSA63J-221X MG R 220Ω 1/16W J C005 QETN1CM-108Z E CAP.
  • Page 80 AV28R25EKS AV28R250EKS ! Symbol No. Part No. Part Name Description ! Symbol No. Part No. Part Name Description CAPACITOR COIL C603 QETN1HM-106Z E CAP. 10 µ F 50V M L501 QQL244J-151Z INDUCTOR L701 QQL244K-4R7Z COIL 4.7 µ H K C604 QETN1HM-107Z E CAP.
  • Page 81 AV28R25EKS AV28R250EKS POWER & DEF. P.W. BOARD ASS’Y (SJL-2003A-U2) ! Symbol No. Part No. Part Name Description ! Symbol No. Part No. Part Name Description RESISTOR TRANSISTOR R401 QRE141J-682Y 6.8kΩ 1/4W J Q709 2SC2412K/QR/-X TRANSISTOR Q710 2SC2412K/QR/-X TRANSISTOR R402 QRA14CF-6801Y MF R 6.8kΩ...
  • Page 82 AV28R25EKS AV28R250EKS ! Symbol No. Part No. Part Name Description ! Symbol No. Part No. Part Name Description RESISTOR CAPACITOR R936 QRE141J-103Y 10kΩ 1/4W J C964 QFVF1HJ-684Z MF CAP. 0.68µF 50V J ! R939 QRE141J-1R0Y 1.0Ω 1/4W J C968 QCZ0120-104Z C CAP.
  • Page 83 AV28R25EKS AV28R250EKS CRT SOCKET P.W. BOARD ASS’Y (SJL-3001A-U2) ! Symbol No. Part No. Part Name Description ! Symbol No. Part No. Part Name Description RESISTOR TRANSISTOR R3101 NRSA63J-101X MG R 100Ω 1/16W J Q402 2SC1740S/QR/-T TRANSISTOR Q461 2SD1408/OY/-LB POW TRANSISTOR R3102 NRSA63J-101X MG R...
  • Page 84 AV28R25EKS AV28R250EKS ■ ■ ■ ■ FRONT CONTROL P.W. BOARD ASS’Y (SJL-8003A-U2) ! Symbol No. Part No. Part Name Description ! Symbol No. Part No. Part Name Description RESISTOR CAPACITOR R8801 NRSA63J-561X MG R 560Ω 1/16W J C3316 QETN1CM-107Z E CAP. 100 µ...
  • Page 85 AV28R25EKS AV28R250EKS ■ ■ ■ ■ AV SW P.W. BOARD ASS’Y (SJL0S003A-U2) ! Symbol No. Part No. Part Name Description ! Symbol No. Part No. Part Name Description RESISTOR RESISTOR R0183 NRSA63J-101X MG R 100 Ω 1/16W J R0101 NRSA63J-750X MG R 75 Ω...
  • Page 86 AV28R25EKS AV28R250EKS ! Symbol No. Part No. Part Name Description ! Symbol No. Part No. Part Name Description CAPACITOR TRANSISTOR C0145 QETN1CM-107Z E CAP. 100µF 16V M Q0120 2SC2412K/QR/-X TRANSISTOR C0146 QETN1CM-107Z E CAP. 100µF 16V M C0147 QETN1CM-477Z E CAP. 470µF 16V M C0149 NCB31HK-103X...
  • Page 87 AV28R25EKS AV28R250EKS ! Symbol No. Part No. Part Name Description ! Symbol No. Part No. Part Name Description RESISTOR CAPACITOR R303 NRSA63J-103X MG R 10kΩ 1/16W J C127 NDC31HJ-221X C CAP. 220pF 50V J C128 QETN1EM-476Z E CAP. 47 µ F 25V M R304 NRSA63J-394X MG R...
  • Page 88 AV28R25EKS AV28R250EKS ! Symbol No. Part No. Part Name Description ! Symbol No. Part No. Part Name Description CAPACITOR C560 QETN1HM-106Z E CAP. 10µF 50V M IC101 TC9471F IC102 S-80828ANNP-W C561 NCF31AZ-105X C CAP. 1µF 10V Z IC201 BA10324AF-XE C562 NCF31AZ-105X C CAP.
  • Page 89 AV28R25EKS AV28R250EKS PACKING PACKING PARTS LIST ! Ref.No. Part No. Part Name Description AV28R25EKS LC10101-016A PACKING CASE AEM1064-001-E EURO LABEL LC11318-002B CUSHION ASSY 4pcs in 1set RM-C60H-1C RC HAND UNIT AEM1047-A02-E FORM BAG AEM3021-002-E DOCUMENT BAGS LCT1152-001A-U INST BOOK BT-54013-1E WARRANTY CARD AEM3148-001-E REG CARD...
  • Page 90 AV28R25EKS AV28R250EKS Memo No. 51941...
  • Page 91 AV28R25EKS AV28R250EKS Memo No. 51941...
  • Page 92 VICT OR COMPANY OF J APAN, LIMIT ED HOME AV NETWORK BU SINESS UNIT 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa-prefecture, 221-8528, Japan 28R25EKS-U 28R250EKS-U Printed in Japan VP 0203 DP025861...
  • Page 93 AV28R25EKS AV28R250EKB SERVICE MANUAL COLOUR TELEVISION AV28R25EKS BASIC CHASSIS AV28R250EKS Supplementary We have changed the production country for some parts. As a result, some parts number have been changed. Therefore, this service manual describes only these parts number. For others, please use the service manual for AV28R25EKS, AV28R250EKS (No.51941, Mar.