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JVC AV-2108WE/BSK, Service Manual

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SERVICE MANUAL

COPYRIGHT © 2006 Victor Company of Japan, Limited

No.YA386

2006/7

COLOUR TELEVISION

YA386

2006

7

AV-2108WE

/BSK

TABLE OF CONTENTS

1

PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-3

2

SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-4

3

DISASSEMBLY  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-5

4

ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-11

5

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-24

BASIC CHASSIS

CG4

Summary of Contents for AV-2108WE/BSK

Page 1: ...or Company of Japan Limited No YA386 2006 7 COLOUR TELEVISION YA386 2006 7 AV 2108WE BSK TABLE OF CONTENTS 1 PRECAUTION 1 3 2 SPECIFIC SERVICE INSTRUCTIONS 1 4 3 DISASSEMBLY 1 5 4 ADJUSTMENT 1 11 5 TROUBLESHOOTING 1 24 BASIC CHASSIS CG4 ...

Page 2: ... 5MHz 6 5 MHz D K Colour Sub Carrier PAL SECAM NTSC 4 43 MHz 4 40625 MHz 4 25 MHz 3 58 MHz 4 43 MHz Power Input AC110 V to AC240 V 50 Hz 60 Hz Power Consumption 100 W Max 65 W Avg Picture Tube Visible size 52 3 cm measured diagonally H 41 6 cm V 31 5 cm High Voltage 26 5 kV 1 5kV at zero beam current Speaker 6 5cm x 13cm 2 Audio Power Output 3 W monaural Aerial Input Terminal 75 Ω unbalanced coaxi...

Page 3: ...lacements or alternatives approved by the manufacturer of the complete product 7 Do not check high voltage by drawing an arc Use a high voltage meter or a high voltage probe with a VTVM Discharge the picture tube before attempting meter connection by connecting a clip lead to the ground frame and connecting the other end of the lead through a 10kΩ 2W resistor to the anode button 8 When service is ...

Page 4: ...L2 O Clock for Inter IC contorl For main memory 24 LOCK Not used 4 BUS_FREE Not used 25 3 58 OTH Not used 5 NC Not used 26 4 5 OTH Not used 6 KEY1 I Key scan for front key Menu CH 27 H_SYNC I Horizontal sync 7 KEY2 I Key scan for front key Vol 28 I II Not used 8 ECO IN Not used 29 OSD_Ys O Ys blanking for OSD 9 AFT I AFT voltage for tuner 30 OSD_B O Blue for OSD 10 LED POW Not used 31 OSD_G O Gree...

Page 5: ...VING THE SPEAKER Remove the REAR COVER 1 Remove the 2 screws C as shown in Fig 1 2 Follow the same steps when removing the other hand SPEAKER 3 1 4 CHECKING THE MAIN PW BOARD To check the back side of the MAIN PWB 1 Pull out the MAIN PWB Refer to REMOVING THE MAIN PW BOARD 2 Erect the MAIN PWB vertically so that you can easily check its back side CAUTIONS Before turning on power make sure that the...

Page 6: ...1 6 No YA386 Fig 1 CRT SOCKET PWB MAIN PWB POWER CORD A B REAR COVER C SPEAKER C SPEAKER FRONT CABINET ...

Page 7: ...e correct value with the MENU key 5 Press the DISPLAY key twice and return to the normal screen 5 Receiving channel setting Refer to the OPERATING INSTRUCTIONS and set the receive channels Channels Preset as described 6 User settings Check the user setting items according to the given in page later Where these do not agree refer to the OPERATING INSTRUCTIONS and set the items as described 7 SERVIC...

Page 8: ...TEM PAL SOUND SYSTEM B G Setting item Setting position INPUT TV ON TIMER PR1 0 00 VNR OFF Setting item Setting position AUTO SHUTOFF OFF CHILD LOCK OFF BLUE BACK OFF Setting item Setting position SETUP TOUR ON LANGUAGE ENGLISH Setting item Setting position BRIGHT STANDARD SOFT TINT 15 15 15 COLOUR 15 15 15 BRIGHT 15 15 15 CONT 30 15 11 SHARP 15 15 12 Setting item Setting value AV 2108WE BSK COLOUR...

Page 9: ...L BUTTONS Setting item Setting value Setting item Setting value 2 V C 1 CUT OFF 2 DRIVE 3 BRIGHT 4 CONT 5 COLOUR 6 TINT 7 SECAM BL ADJUST 8 SHARP Do not adjust 9 AMP T SHARP Do not adjust 5 PRESET Do not adjust Colour System 1 C TRAP FIX 2 SHARP PEAK 3 ABL 4 GAMMA 5 Y DELAY TIME 6 BLACK EXP START 7 C BPF 8 CW SCP 9 VIF DET LEVEL 11 IF AGC MIN 12 VIF AGC 13 VIF PMOD 19 VNR 20 RGB LIM 21 RGB LIMIT L...

Page 10: ...he tweezers and remove the chip part Transistors diodes variable resistors etc 1 Apply extra solder to each lead 2 As shown in the figure push the part with tweezers and alternately melt the solder at each lead Shift and remove the chip part NOTE After removing the part remove remaining solder from the pattern 2 How to install Chip parts Resistors capacitors etc 1 Apply solder to the pattern as in...

Page 11: ...sistors transformers and condensers not shown in the adjustment items of this service adjustment 4 2 PRESET SETTING BEFORE ADJUSTMENT Unless otherwise specified in the adjustment items preset the following functions with the REMOTE CONTROL UNIT 4 3 MEASURING INSTRUMENT AND FIXTURES 1 DC voltmeter or digital voltmeter 2 Oscilloscope 3 Signal generator Pattern generator PAL SECAM NTSC 4 Remote contr...

Page 12: ...n TP 91 B1 2Pin NC 3Pin X ray1 4Pin X ray2 5Pin TP E HVT S1 HV U IC301 MEMORY IC IC702 IC701 F901 DEG TU001 FRONT TOP MAIN PWB CRT SOCKET PWB SOLDER SIDE E1 U T PW UPPER FOCUS LOWER SCREEN TP 47G R TP 47B TP E T CRT EARTH WIRE BRAIDED ASS Y 5 1 ...

Page 13: ...urn to the SERVICE MENU And then press the DISPLAY key again return to the normal screen 4 6 6 SELECTION OF SUB MENU SCREEN Press one of 1 to 5 keys of the REMOTE CONTROL UNIT and select the SUB MENU SCREEN form the SERVICE MENU 1 IF Adjustment of the IF circuits 2 V C Adjustment of the VIDEO circuit 3 DEF Adjustment of the DEFLECTION circuit 4 VSM PRESET Adjustment of the initial setting values o...

Page 14: ...urn to the SERVICE MENU 1 1 key Select 1 IF 2 2 key Select 2 DELAY POINT 3 MENU keys Set adjust the setting values of the setting items 4 DISPLAY key When this is pressed twice you will return to the SERVICE MENU 1 2 to 4 keys Select one from 2 V C 3 DEF and 4 VSM PRESET 2 MENU keys Select setting items 3 MENU keys Adjust the values of the items 4 DISPLAY key When this is pressed return to the SER...

Page 15: ...NT UHF AGC TAKE OVER OPERATE DISP EXIT 6 SETUP TOUR OFF BRIGHT TINT COLOUR BRIGHT CONT SHARP OPERATE DISP EXIT 4 VSM PRESET SELECT DEF PAL OPERATE DISP EXIT 3 DEF SELECT 50Hz 1 VER POSITION V C PAL 1 CUTOFF R G B OPERATE DISP EXIT 50Hz 2 V C SELECT PRESET PAL 1 C TRAP FIX OPERATE DISP EXIT 50Hz B G 5 PRESET SELECT SERVICE MENU 1 IF 2 V C 3 DEF 4 VSM PRESET 5 PRESET 6 SETUP TOUR OFF 1 6 SELECT DISP...

Page 16: ...7 50 50 50 50 2 DRIVE RED 128 127 0 0 0 0 BLUE 128 127 0 0 0 0 3 BRIGHT 128 127 0 0 0 0 4 CONT 63 63 0 0 0 0 5 COLOUR 63 63 0 0 0 5 6 TINT TV 63 63 0 0 VIDEO 63 63 0 3 7 SECAM BL ADJUST 31 31 0 0 0 0 8 SHARP Do not adjust TV 31 31 8 Fixed 8 Fixed 8 Fixed 8 Fixed VIDEO 31 31 15 Fixed 15 Fixed 15 Fixed 15 Fixed 9 AMP T SHARP 31 31 12 12 12 12 Setting item Variable range Initial setting value fv 50Hz...

Page 17: ... TV 0 3 0 2 2 3 VIDEO 0 3 0 2 0 2 6 BLACK EXP START 0 3 3 3 3 3 7 C BPF TV 0 1 1 1 0 0 VIDEO 0 1 1 1 1 1 8 CW SCP 0 1 0 0 0 0 9 VIF DET LEVEL 63 63 0 0 0 0 11 IF AGC MIN 0 1 0 0 0 0 12 VIF AGC 0 1 0 0 0 0 13 VIF PMOD 0 1 0 0 0 0 19 VNR 0 63 15 15 15 15 20 RGB LIM 0 1 1 1 1 1 21 RGB LIMIT LEVEL 0 7 2 2 2 2 23 TEXT H POSITION 16 15 3 3 3 3 24 READ DATA Setting item Variable range Initial setting val...

Page 18: ...ectly calibrated 1 Receive any broadcast 2 Select 1 IF from the SERVICE MENU 3 Select 1 VCO 4 Select VCO ADJUST with MENU key 5 Press MENU keys until the colour of the characters TOO HIGH changes blue to yellow Then gradually press the MENU keys until the TOO LOW changes yellow At this time confirm that the value of VCO ADJUST is near 00 6 Select AFT ADJUST with MENU key 7 Press MENU keys until th...

Page 19: ...re are no irregularities Item Measuring instrument Test point Adjustment part Description DELAY POINT UHF AGC TAKE OVER OPERATE DISP EXIT Setting Item Variable range Initial setting value 45 35 DELAY POINT AGC TAKE OVER 0 127 NTSC3 58 OTHER Item Measuring instrument Test point Adjustment part Description FOCUS Signal generator FOCUS VR In HVT 1 Receive a crosshatch signal 2 While watching the scre...

Page 20: ...ON 4 Set the initial setting value of 1 VER POSITION 5 Adjust 1 VER POSITION to make the vertical centre fall on the display centre 6 Select 3 VER HEIGHT 7 Set the initial setting value of 3 VER HEIGHT 8 Adjust 3 VER HEIGHT to make the vertical screen size be 92 of the picture size Fig 1 H POSITION Signal generator Remote control unit 3 DEF 2 HOR POSITION 1 Receive a circle pattern signal 2 Select...

Page 21: ...the 2 key to turn off the single horizontal line 10 Press the DISPLAY key twice to return to the nor mal screen WHITE BALANCE HIGH LIGHT Signal generator Remote control unit 2 V C 2 DRIVE R 2 DRIVE B 1 Receive a black and white signal colour off 2 Select 2 V C from the SERVICE MENU 3 Select 2 DRIVE 4 Set the initial setting value of 2 DRIVE 5 Adjust the screen until it becomes white using the 4 6 ...

Page 22: ...R PAL SECAM NTSC Method of adjustment using measuring instrument PAL COLOUR 1 Receive a PAL full field colour bar signal 75 white 2 Select 2 V C from the SERVICE MENU 3 Select 5 COLOUR 4 Set the initial setting value of 5 COLOUR 5 Connect the oscilloscope between TP 47G R and TP E 6 Adjust PAL COLOUR to bring the value of A in the voltage table SECAM COLOUR 1 Receive a SECAM full field colour bar ...

Page 23: ...the oscilloscope between TP 47G R and TP E 6 Adjust NTSC 3 58 TINT to bring the value of B in the voltage table in the left NTSC 4 43 TINT 1 When NTSC 3 58 is set NTSC 4 43 will be automatically set at the respective values SECAM BLACK OFFSET Signal generator Remote control unit 2 V C 7 SECAM BL ADJUST 1 Input a SECAM full field colour bar signal 2 Select 2 V C from the SERVICE MENU 3 Select 7 SEC...

Page 24: ...rom the SERVICE MENU 2 Set the PICTURE MODE to BRIGHT 3 Select TINT 4 Set the initial setting value of TINT as shown in the below table 5 Select COLOUR to SHARP in turn and set the values 6 Respectively select the SOFT and STANDARD Make similar adjustment as same step as above Setting item Variable range Initial setting value BRIGHT STANDARD SOFT TINT 0 30 15 15 15 COLOUR 0 30 15 15 15 BRIGHT 0 30...

Page 25: ... No YA386 Display Category 12 3 chome Moriya cho Kanagawa ku Yokohama city Kanagawa prefecture 221 8528 Japan Victor Company of Japan Limited VPT Printed in Japan ...

Page 26: ...AV 2108WE BSK BASIC CHASSIS CG4 COLOUR TELEVISION CD ROM No SML200607 COPYRIGHT 2006 Victor Company of Japan Limited No YA386 2006 7 SCHEMATIC DIAGRAMS ...

Page 27: ... 4 Power Supply Type MM Metalized mylar capacitor PP Polypropylene capacitor MPP Metalized polypropylene capacitor MF Metalized film capacitor TF Thin film capacitor BP Bipolar electrolytic capacitor TAN Tantalum capacitor 3 Coils No unit Others µH As specified No indication Ceramic capacitor 2 Capacitors Capacitance value 1 or higher pF less than 1 µF Withstand voltage No indication DC50 V Others...

Page 28: ...2 7 PATTERN DIAGRAMS 2 9 MAIN PWB PATTERN 2 9 VOLTAGE CHARTS 2 11 WAVEFORMS 2 12 USING P W BOARD IC BOTTOM VIEW FRONT VIEW TOP VIEW 1 N N 1 OUT E IN IN OUT E 1 N TOP VIEW N 1 N N N 1 N CHIP IC TRANSISTOR BOTTOM VIEW FRONT VIEW TOP VIEW CHIP TR E C B E C B C B E B G E S C D E C B E C B PWB ASS Y name AV 2108WE BSK MAIN P W BOARD SCG 1525A H2 CRT SOCKET P W BOARD SCG 3009A H2 2 2 No YA386 ...

Page 29: ...CL SDA SCL SDA 5V OUT B1 FOCUS TU001 TUNER SPEAKER L SPEAKER R HEADPHONE REMOCON RECEIVER POWER LED TIMER LED CRT V H DEF YOKE IC702 MEMORY Q102 IF AMP SF102 SAW FILTER IC921 POWER REG IC971 9V REG IC972 5V REG IC421 V OUT Q522 H OUT Q521 H DRIVE D901 T522 FBT R OUT Q351 G OUT Q352 B OUT Q353 IC701 MICRO COMPUTER IC301 1CHIP DECODER IC651 AUDIO AMP IC703 5V REG RESET T921 SW TRANSF REAR IN VIDEO A...

Page 30: ...2 R304 R305 C122 C326 C115 C116 R002 R003 R723 C312 ABL 9V V_SYNC H_OUT H_VCC FBP V_OUT A PROT P_ON OFF X_RAY 5V A_VCC A_GND STB_PW 32V R162 R164 C165 R719 C726 Q652 033 4 7k 0 180p 4 7k BW 1 50 BW 1 16 X 560 X 390 82k 6 01 10k 4 7k 10K 1k X 100 X BW X 100 16 01 220 25 15k BW 4 7k 560 150p 10k 10k 560 560 4 7k 4 7k 680 680 56k X 01 01 X BW X 180p 01 X 4 01 01 001 047 BW 470 16 10k X x X X X X X X ...

Page 31: ...C527 C525 QFZ0200 962 QFZ0197 274 D927 C529 ABL V_OUT V_SYNC FBP 32V H_OUT X X 1000 35 82k 1000 25 47 47 25 150K X 4 X 8 2M X X 12 220 16 220 25 001 3 3K 4 100k 100 10 270 56 68k 82k 68k 4 5 4 7 50 10 50 0082 50 4 7 X X 1M 4 7k 100 35 1 2k 4 7 50 X 0 X 3 3k 0 8 2k X X 3 9K 8 100 35 X 22k 5 2 2K X 1 50 01 001 3300p 001 X X 4 7 8 100 160 1000 25 220 X 82 X X 0047 4 7 X X 220 25 001 X 4 7 250 X 2 2k ...

Page 32: ...347 W628 R301 R302 R303 R304 R305 R306 R307 R308 W481 W482 CL005 R348 R313 R341 J002 D982 D983 R810 X7 01 K701 Y705 K703 K704 Q702 Q703 FC901 C010 R349 C011 W576 A D731 R740 H006 R924 Y301 W011 W566 R925 W012 W014 R401 R421 R422 R423 R424 R425 R426 R4 30 R431 R441 R442 R453 R503 W649 R565 R566 R575 R583 W073 F901 Q804 CN0PW R772 R657 R658 R659 R652 R656 R660 W655 Q981 C657 R7 06 R707 R708 R7 09 R7...

Page 33: ... 0 27 4 1 28 4 9 29 0 30 0 31 0 32 0 33 0 34 4 9 35 4 7 36 4 9 37 4 4 38 4 4 39 4 9 40 0 41 2 1 42 0 IC702 1 0 2 0 3 0 4 0 5 4 9 6 4 9 7 0 8 4 9 IC703 1 14 4 2 5 8 3 0 4 4 9 5 4 9 IC704 1 4 5 2 4 9 3 0 IC921 1 314 0 2 NC 3 0 4 0 5 31 8 6 0 7 0 7 IC971 1 12 8 2 9 0 3 0 IC972 1 9 2 2 4 8 3 0 Q102 E 0 C 9 0 B 2 3 Q301 E 4 6 C 0 B 4 0 Q302 E 4 0 C 9 0 B 4 6 Q401 E 0 C 0 B 5 4 Q402 E 0 C 4 9 B 0 Q521 E...

Page 34: ...s IC301 42 2 5 Vp p H IC301 46 2 5 Vp p V IC701 27 5 0 Vp p H IC701 35 5 0 Vp p V IC421 1 0 6 Vp p V IC421 3 30 Vp p V IC421 5 60 Vp p V IC421 6 30 Vp p V Q521 C 38 Vp p H Q521 B 1 5 Vp p H Q522 C 1000Vp p H Q522 B 2 0 Vp p H T522 1 1000 Vp p H T522 3 55Vp p H H H T522 5 220 Vp p T522 9 220Vp p H T522 7 25 Vp p Q351 C Q352 C Q353 C 110 Vp p H 120 Vp p H H 120 Vp p SHEET2 SHEET2 ...

Page 35: ... No YA386 Display Category 12 3 chome Moriya cho kanagawa ku Yokohama city kanagawa prefecture 221 8528 Japan Victor Company of Japan Limited VPT Printed in Japan ...

Page 36: ...pacitor MF R Metal Film Resistor MF CAP Metalized Film Capacitor MG R Metal Glazed Resistor MM CAP Metalized Mylar Capacitor MP R Metal Plate Resistor MP CAP Metalized Polystyrol Capacitor OM R Metal Oxide Film Resistor PP CAP Polypropylene Capacitor CMF R Coating Metal Film Resistor PS CAP Polystyrol Capacitor UNF R Non Flammable Resistor TF CAP Thin Film Capacitor CH V R Chip Variable Resistor M...

Page 37: ...T 3 3 EXPLODED VIEW PARTS LIST 1 3 3 EXPLODED VIEW 1 3 4 PRINTED WIRING BOARD PARTS LIST 3 5 MAIN P W BOARD ASS Y SCG 1525A H2 3 5 CRT SOCKET P W BOARD ASS Y SCG 3009A H2 3 7 REMOTE CONTROL UNIT PARTS LIST RM C360GY 1H 3 8 PACKING 3 8 PACKING PARTS LIST 3 8 ...

Page 38: ...S 11 QYSBSFG4016ZA TAP SCREW M4 x 16mm x9 12 QYSBSF3010ZA TAP SCREW M3 x 10mm 13 GG10187 009B HK REAR COVER 14 CM47005 A01 H POWER CORD CLAMP 15 QMPR340 165 K2 POWER CORD 1 65m BLACK 16 CM48144 004 H PB STOPPER 17 A48457 3 H SPRING 18 WJY0008 006A E BRAIDED ASS Y 19 CM36623 003 H CHASSIS RAIL x2 20 GG40046 001A H TAP SCREW x4 21 LC40226 005A H SPACER x4 22 GG20057 002A H SPEAKER HOLDER x4 23 QAS01...

Page 39: ...3 4 No YA386 EXPLODED VIEW 1 RATING LABEL 100 101 102 103 1 2 3 CRT SOCKET PWB 31 T522 L01 V01 MAIN PWB 30 15 14 11 12 13 17 19 18 20 21 20 21 16 22 23 22 21 22 23 22 21 ...

Page 40: ...APACITOR 0 47uF 50V M C120 NDC31HJ 121X C CAPACITOR 120pF 50V J C121 NCB31HK 103X C CAPACITOR 0 01uF 50V K C122 NCB31HK 103X C CAPACITOR 0 01uF 50V K C162 NCB31HK 152X C CAPACITOR 1500pF 50V K C301 NCB31HK 681X C CAPACITOR 680pF 50V K C302 QETN1HM 475Z E CAPACITOR 4 7uF 50V M C303 NDC31HJ 100X C CAPACITOR 10pF 50V J C304 QFVF1HJ 474Z MF CAPACITOR 0 47uF 50V J C305 QETN1HM 474Z E CAPACITOR 0 47uF 5...

Page 41: ... 4 7MΩ 1 16W J R341 NRSA63J 332X MG RESISTOR 3 3kΩ 1 16W J Ref No Part No Part Name Description Local R374 NRSA63J 682X MG RESISTOR 6 8kΩ 1 16W J R401 NRSA02J 103X MG RESISTOR 10kΩ 1 10W J R421 NRSA63J 472X MG RESISTOR 4 7kΩ 1 16W J R423 NRSA63J 0R0X MG RESISTOR 0Ω 1 16W J R424 NRSA63J 0R0X MG RESISTOR 0Ω 1 16W J R425 NRSA63J 332X MG RESISTOR 3 3kΩ 1 16W J R426 NRSA63J 0R0X MG RESISTOR 0Ω 1 16W J ...

Page 42: ... 7A F901 QMF51E2 3R15 S FUSE 3 15A AC250V J002 QNN0384 001 PIN JACK VIDEO AUDIOIN OUT REAR J003 QNN0281 003 PIN JACK VIDEO IN FRONT J004 QNN0281 002 PIN JACK AUDIO IN FRONT J005 QNS0197 001 3 5 JACK HEADPHONE K421 QQR1113 001Z FERRITE BEADS K901 QQR1113 001Z FERRITE BEADS K902 QQR1113 001Z FERRITE BEADS K941 QQR1113 001Z FERRITE BEADS K942 QQR1113 001Z FERRITE BEADS K943 QQR1113 001Z FERRITE BEADS...

Page 43: ...COVER Ref No Part No Part Name Description Local 1 GG10323 018A PACKING CASE 2 GG10188 006A CUSHION ASS Y 4pcs in 1set 3 GG30097 003A H POLY BAG 4 GG30096 001A H POLY BAG 5 BATTERY AA R6 1 5V x2 6 GGT0113 001B H INST BOOK English Russian 7 WARRANTY CARD BT 54028 1H 8 GG40042 001A H CORD CLAMP R C 9 RM C360GY 1H REMOCON UNIT 9 2 3 2 1 4 5 6 7 8 ...

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