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JVC RX-8020VBK Service Manual

Audio/video control receiver.
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SERVICE MANUAL
AUDIO/VIDEO CONTROL RECEIVER
A/V CONTROL RECEIVER
CATV/DBS
VCR1
TV
AUDIO
DVD
DVD MULTI
CD
FM/AM
TV/DBS
VIDEO
CDR
PHONO
VCR1
VCR 2
TAPE/MD
USB
SURROUND
DSP
SURR/DSP ANALOG/DIGITAL
OFF
INPUT
ANALOG
BASS
DIRECT
BOOST
FRONT•L
FRONT•R
1
2
3
MENU
FM/AM TUNING
SOUND
TEST
CENTER
SUBWFR
4
5
6
STANDBY
ENTER
DIMMER
SURR•L
SURR•R
7/P
8
9
STANDBY/ON
MUTING
DIGITAL EQ
SBACK•L
SBACK•R
0
10
+10
100 +
RETURN
FM MODE
SPEAKERS ON/OFF
CATV/DBS
1
CONTROL
SURROUND
CH/ LEVEL TV VOL
VOLUME
TV/VIDEO
2
SUBWOOFER OUT ON/OFF
TEXT
PLAY
DISPLAY
MENU
EXIT
USB AUDIO
REC
/REW
FF/
PAUSE
PAUSE
PUSH OPEN
SET
DOWN – TUNING – UP
SLEEP
STOP
CONTROL
PHONES
RM-SRX8020J
REMOTE CONTROL
Contents
Safety precautions --------------------------------------------------------1-2
Disassembly method -----------------------------------------------------1-3
Adjustment method -------------------------------------------------------1-9
Self-diagnose function-----------------------------------------------------1-10
Description of major ICs -------------------------------------------------1-12~31
RX-8020VBK
RX-8020V
AUDIO/VIDEO CONTROL RECEIVER
FM/AM PRESET
FM MODE
MEMORY
DVD MULTI
DVD
VCR 1
VCR 2
VIDEO
SURROUND/DSP
INPUT
DSP
OFF
ANALOG/DIGITAL
INPUT ATT
VIDEO
S-VIDEO
VIDEO
L—AUDIO—R
PHONO
CD
CDR
TAPE/MD
USB AUDIO
SOURCE NAME
COPYRIGHT
2002 VICTOR COMPANY OF JAPAN, LTD.
UJ ---------- U.S.Military
MASTER VOLUME
TV SOUND/DBS
DIGITAL
LEVEL
EQ
ADJUST
ANALOG DIRECT
SOUCE NAME
EFFECT SETTING
BASS BOOST
FM/AM
CONTROL
DOWN
UP
RX-8020VBK
Area suffix
No.21161
Oct. 2002

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Table of Contents

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   Summary of Contents for JVC RX-8020VBK

  • Page 1 RX-8020VBK SERVICE MANUAL AUDIO/VIDEO CONTROL RECEIVER RX-8020VBK Area suffix UJ ---------- U.S.Military A/V CONTROL RECEIVER CATV/DBS VCR1 AUDIO DVD MULTI FM/AM TV/DBS VIDEO PHONO VCR1 VCR 2 TAPE/MD SURROUND SURR/DSP ANALOG/DIGITAL INPUT RX-8020V AUDIO/VIDEO CONTROL RECEIVER ANALOG BASS DIRECT BOOST FRONT•L...
  • Page 2 RX-8020VBK Adjustment method Tuner section 1.Tuner range 87.5MHz~108.0MHz AM(MW) 531 kHz to 1 602 kHz (at 9 kHz intervals) 530 kHz to 1 600 kHz (at 10 kHz intervals) Power amplifier section Adjustment of idling current Measurement location B2204-B2205(Lch) , B2213-2214(Rch)
  • Page 3 RX-8020VBK Self-diagnose function 1. Detection of abnormal power supply and voltage When the power is turned ON, if an abnormality is detected during the signal input at the A/D port (IC901, pin 2-5, 7) for one second continuously, the status will become STANDBY mode immediately.
  • Page 4 RX-8020VBK 4. Self-diagnose To enter the self-diagnose mode, put the power plug in the socket while pressing "SETTING" key and "UP" key together simultaneously, then turn the power ON. While the working status is being displayed, the each item can be switched with the UP/DOWN key operation.
  • Page 5: Block Diagrams

    RX-8020VBK Block diagrams LVA10336-6 COMPU LINK TEXT LINK 7.1ch Preout CN393 LVA10221-1 LVA10220-1 CN392 FRONT Y/C Q761 TEXT Q763 CN244 CN242 TEXT TEXT LVA10338-7 S video DATA (Refer to the following page.) LVA10221-2 LVA10336-5 Q762 Vido5, 6 Q764 Vido5, 6...
  • Page 6 RX-8020VBK Standard schematic diagrams Power supply section Power trans1 board Power trans2 board Power/fuse board PW10 PW20 PW11 PW21 CN811 PW27 PW17 PW12 PW22 Sheet 2/10 Power supply board PW23 PW13 PW24 PW14 PW25 QSW0812-001 PW15 PW16 PW26 Sheet 9/10...
  • Page 7 RX-8020VBK RX-8020VBK Main & Speaker terminal section Speaker board Sheet 7/10 Sheet 6/10 Sheet 5/10 Sheet 6/10 Sheet 7/10 Sheet 5/10 Sheet 7/10 R831 R833 C835 Main board 0.022 D831 C834 RY831 0.022 CN702 CN705 CN703 CN701 CN721 CN723 CN706...
  • Page 8 RX-8020VBK Audio section Audio board R916 R915 R914 R913 R961 R951 R941 R971 R921 R931 R918 Q941 Q971 Q951 Q961 Q921 Q931 2SD2395/EF/ 2SD2395/EF/ 2SD2395/EF/ KTA1046/Y/ 2SD2395/EF/ 2SD2395/EF/ C942 C922 C932 C972 C952 C962 0.0047 0.0047 0.0047 0.0047 0.0047 R932 0.0047...
  • Page 9 RX-8020VBK RX-8020VBK Audio / Video Audio / Video / S video signal input section CN200 Audio input board Video board QGB2510K1-11 R315 R225 C301 R301 C311 2.2k 4.7/50 R305 C305 0.0018 C307 0.0068 4.7/50 IC301 C208 47/16 OSDCS OSDDATA NJM4580D-D...
  • Page 10 RX-8020VBK DVD section Compulink board R1350 J1350 C1381 C1382 C1383 R1351 QNS0089-001 R1385 R1386 R1387 C1384 C1385 C1386 47/25 4.7/50 4.7/50 R1352 J1351 QNS0077-001 R1353 C1387 C1388 C1389 R1354 R1388 R1389 R1390 C1370 47/25 C1390 C1391 C1392 D1350 47/25 4.7/50 4.7/50...
  • Page 11 RX-8020VBK RX-8020VBK Audio amp. section (1/2) Lch amp. board C751 R705 R761 R707 Q761 R787 D771 1SS133 Q707 KTA1268/GL/ Q791 KTA1268/GL/ R771 R779 0.22( 7W) C795 R775 0.022 R791 VR787 R789 C713 R795 R783 R777 L791 D701 1SS133 R773 Q781...
  • Page 12 RX-8020VBK Audio amp. section (2/2) Cch amp. board R1721 C1713 R1703 100/16 C1751 Q1703 KTA1268/GL/ R1795 C1741 Q1751 R1751 47/100 2SD2390/OPY/-F6 C1711 C1712 D1771 0.01MY 1SS133 D1701 R1771 1SS133 Q1791 R1722 KTA1268/GL/ 3.3k R1712 R1773 C1701 C1791 R1723 R1753 R1701 C1703 0.22...
  • Page 13 RX-8020VBK RX-8020VBK DSP section AUDIO Signal DIGITAL AUDIO Signal FRONT Signal CENTER Signal REAR Signal C2003 0.0068 (TX) (RX1-4) R2560 UN560 C2011 R2003 R2005 GP1FA351TZ BA15218F-XE C2005 4.7/25 C2009 R2007 C2560 4.7/25 IC521 C2001 R2001 (TX) 100k 0.0018 C2007 C2006 0.0027...
  • Page 14 RX-8020VBK System control board System control & FL display section C409 C400 C410 4.7/50 4.7/50 4.7/50 DI400 QLF0102-001 Q407 Q402 Q404 CN412 KRC107S D405 QGF1205F1-08 DTC114TKA 1SS133 KRC107S Q408 KRC107S Sheet 1/10 CN410 QGF1205F1-10 IC411 M_CLK NJU7241F33 M_COMMAND M_STATUS M_CLK...
  • Page 15 RX-8020VBK RX-8020VBK Tuner section Tuner board C129 0.001 RF101 C128 QAU0124-002 C134 0.47/50 0.0022 C137 330P C133 22/16 C156 0.001 R157 6.8K Q103 C161 2SC461/BC 10/16 D129 D125 R132 1SS133 C162 R103 10/16 R158 6.8K R146 D124 3.9K C126 100P...
  • Page 16 RX-8020VBK Exploded view of general assembly and parts list Block No. Compulink board Power trans board I/O board Power trans board Power/Fuse board Speaker board Relay board Main Audio board board power switch board Power supply board Front key &...
  • Page 17 RX-8020VBK RX-8020VBK Parts list (General assembly) Parts list (General assembly) Block No. M1MM Block No. M1MM Item Parts number Parts name Q'ty Description Area Item Parts number Parts name Q'ty Description Area LV10469-011A FRONT PANEL 1 RX-8020VBKUJ LV10660-002A REAR PANEL...
  • Page 18 RX-8020VBK Electrical parts list (Main board) Block No. 01 Item Remarks Item Remarks Parts number Parts name Area Parts number Parts name Area C 801 QFZ9076-104Z MM CAPACITOR UJ/E/EN D 841 MTZJ5.1C-T2 ZENER DIODE C 802 QFZ9076-104Z MM CAPACITOR UJ/E/EN...
  • Page 19 RX-8020VBK Electrical parts list (Main board) Block No. 01 Item Parts number Parts name Remarks Area R 887 QRJ146J-100X UNF C RESISTOR EXCEPT J/C R 888 QRJ146J-100X UNF C RESISTOR EXCEPT J/C RY831 QSK0109-001 RELAY RY832 QSK0109-001 RELAY RY851 QSK0109-001...
  • Page 20 RX-8020VBK Electrical parts list (Front board) Block No. 02 Item Remarks Item Remarks Parts number Parts name Area Parts number Parts name Area BK400 LV42092-001A FL HOLDER(R) DI400 QLF0102-001 FL TUBE BK401 LV42093-001A FL HOLDER(L) IC400 MN101C35DHL1 C 400 QEKC1HM-475Z E CAPACITOR 4.7MF 20% 50V...
  • Page 21 RX-8020VBK Electrical parts list (Front board) Block No. 02 Item Remarks Parts number Parts name Area Item Parts number Parts name Remarks Area R 448 NRSA63J-103X MG RESISTOR S 431 QSW0683-001Z PUSH SWITCH (UP) R 449 NRSA63J-103X MG RESISTOR S 480...
  • Page 22 RX-8020VBK Electrical parts list (Power board) Block No. 03 Item Remarks Parts number Parts name Area Item Parts number Parts name Remarks Area C 701 QTE1V06-106Z E CAPACITOR C1811 QCS32HJ-330Z C CAPACITOR 33PF 5% 500V C 702 QTE1V06-106Z E CAPACITOR...
  • Page 23 RX-8020VBK Electrical parts list (Power board) Block No. 03 Item Remarks Item Remarks Parts number Parts name Area Parts number Parts name Area Q 772 KTC3200/GL/-T TRANSISTOR R 761 QRJ146J-100X UNF C RESISTOR 10 5% 1/4W Q 773 KTA1268/GL/-T TRANSISTOR...
  • Page 24 RX-8020VBK Electrical parts list (Power board) Block No. 03 Item Remarks Parts number Parts name Area R1812 QRE141J-331Y C RESISTOR 330 5% 1/4W R1813 QRE141J-563Y C RESISTOR 56K 5% 1/4W R1814 QRE141J-563Y C RESISTOR 56K 5% 1/4W R1821 QRJ146J-221X UNF C RESISTOR...
  • Page 25 RX-8020VBK Electrical parts list (Input board) Block No. 04 Item Remarks Item Remarks Parts number Parts name Area Parts number Parts name Area C 201 QETN1HM-475Z E CAPACITOR 4.7MF 20% 50V C 303 NCS31HJ-101X C CAPACITOR C 202 QETN1HM-475Z E CAPACITOR 4.7MF 20% 50V...
  • Page 26 RX-8020VBK Electrical parts list (Input board) Block No. 04 Item Remarks Item Remarks Parts number Parts name Area Parts number Parts name Area CN240 QGB2510K1-12 CONNECTOR C1384 QETN1EM-476Z E CAPACITOR EXCEPT E/EN CN242 QGB1214K1-10S CONNECTOR C1385 QETN1HM-475Z E CAPACITOR EXCEPT E/EN...
  • Page 27 RX-8020VBK Electrical parts list (Input board) Block No. 04 Item Remarks Item Remarks Parts number Parts name Area Parts number Parts name Area IC242 BA7625 Q1429 KRA104S-X DIGITAL.TR IC301 NJM4580D-D Q1441 2SC3576-JVC-T TRANSISTOR IC302 TC9164AF-X Q1442 2SC3576-JVC-T TRANSISTOR IC303 BA15218F-XE...
  • Page 28 RX-8020VBK Electrical parts list (Input board) Block No. 04 Item Remarks Parts number Parts name Area Item Parts number Parts name Remarks Area R 275 NRSA63J-750X MG RESISTOR R 391 NRSA63J-512X MG RESISTOR R 276 NRSA63J-750X MG RESISTOR R 392...
  • Page 29 RX-8020VBK Electrical parts list (Input board) Block No. 04 Item Remarks Parts number Parts name Area R1412 NRSA63J-104X MG RESISTOR R1413 NRSA63J-122X MG RESISTOR R1414 NRSA63J-122X MG RESISTOR R1415 NRSA63J-512X MG RESISTOR R1416 NRSA63J-512X MG RESISTOR R1417 NRSA63J-104X MG RESISTOR...
  • Page 30 RX-8020VBK Electrical parts list (DSP board) Block No. 05 Item Parts number Parts name Remarks Area Item Remarks Parts number Parts name Area C 571 NCB31HK-103X C CAPACITOR C2288 NCF31CZ-104X C CAPACITOR C 572 NEA70GM-107X E CAPACITOR C2289 NCS31HJ-471X C CAPACITOR...
  • Page 31 RX-8020VBK Electrical parts list (DSP board) Block No. 05 Item Remarks Item Remarks Parts number Parts name Area Parts number Parts name Area C2567 NCF31CZ-104X C CAPACITOR PW503 QUB220-08HPHP SIN TWIST WIRE TO PW504 C2568 NEA71HM-105X E.CAPACITOR. Q 570 DTC114YE-X...
  • Page 32 RX-8020VBK Electrical parts list (DSP board) Block No. 05 Item Remarks Parts number Parts name Area Item Remarks Parts number Parts name Area R2196 NRSA63J-105X MG RESISTOR R2361 NRSA63J-102X MG RESISTOR R2197 NRSA63J-105X MG RESISTOR R2362 NRSA63J-102X MG RESISTOR R2201...
  • Page 33 RX-8020VBK Electrical parts list (DSP board) Block No. 05 Item Remarks Parts number Parts name Area R2595 NRSA63J-221X MG RESISTOR R2596 NRSA63J-221X MG RESISTOR R2597 NRSA63J-102X MG RESISTOR R2611 NRSA63J-473X MG RESISTOR R2612 NRSA63J-473X MG RESISTOR R2613 NRSA63J-473X MG RESISTOR...
  • Page 34 RX-8020VBK Electrical parts list (Micon board) Block No. 06 Item Remarks Parts number Parts name Area Item Parts number Parts name Remarks Area QCZ9104-472 C.CAPACITOR 4700PF D 54 11ES2-T4 DIODE C 51 QFLC2AJ-472Z M CAPACITOR 4700PF 5% 100V D 55...
  • Page 35 RX-8020VBK Electrical parts list (Micon board) Block No. 06 Item Remarks Parts number Parts name Area Item Parts number Parts name Remarks Area PW 15 QUB118-12PPPP SIN TWIST WIRE UJ ONLY R 954 QRE141J-221Y C RESISTOR 220 5% 1/4W PW 16...
  • Page 36 RX-8020VBK Electrical parts list (Tuner board) Block No. 07 Item Remarks Parts number Parts name Area Item Parts number Parts name Remarks Area AT101 QNB0014-001 ANT TERMINAL R 127 NRSA02J-822X MG RESISTOR C/M B BK 1 LV31618-001A SHIELD BKT R 128...
  • Page 37 RX-8020VBK Packing materials and accessories parts list Block No. Block No. A1~A5 3-24...
  • Page 38 RX-8020VBK Parts list (Packing) Block No. M3MM Item Parts number Parts name Q'ty Description Area QPA02503505P POLY BAG LV20989-021A CARTON BOX 1 RX-8020VBKUJ LV32034-003A SHEET LV20947-001A PACKING PAD LV20948-001A PACKING PAD QPC06507015P POLY BAG Parts list (Accessories) Block No. M5MM...

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