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Instruction Manual
SERVICE MANUAL
AUDIO/VIDEO CONTROL RECEIVER
A/V CONTROL RECEIVER
CATV/DBS
VCR
TV
AUDIO
DVD
DVD MULTI
CD
FM/AM
TV/DBS
VCR
TAPE/CDR
PHONO
BASS
TREBLE
SURROUND
SURROUND
ANALOG/DIGITAL SLEEP
ON/OFF
MODE
INPUT
BASS BOOST EFFECT
– CENTER +
1
2
3
MENU
SOUND
TEST
– REAR•L +
4
5
6
ENTER
DIMMER
– REAR•R +
FM/AM TUNING
7/P
8
9
STANDBY
MUTING
– SUB WOOFER +
0
10
+10
100 +
RETURN
FM MODE
STANDBY/ON
CA TV/DBS
CONTROL
CONTROL
CH
TV VOL
VOLUME
TV/VIDEO
SURROUND ON/OFF
SURROUND MODE
/REW
FF/
TUNING
REC
PAUSE
PHONES
CONTROL
RM-SRX7020J REMOTE CONTROL
Contents
Safety precautions --------------------------------------------------------1-2
Importance administering point on the safety --------------------- 1-3
Disassembly method -----------------------------------------------------1-4
Adjustment method -------------------------------------------------------1-9
Description of major ICs -------------------------------------------------1-10~24
RX-7020VBK
RX-7020V AUDIO/VIDEO CONTROL RECEIVER
FM/AM PRESET
FM MODE
MEMORY
INPUT
ANALOG/DIGITAL
BASS BOOST
DVD MULTI
DVD
VCR
TV SOUND/DBS
INPUT ATT
SOURCE NAME
SPEAKERS ON/OFF
1
2
CD
PHONO
TAPE/CDR
SOURCE NAME
COPYRIGHT
2002 VICTOR COMPANY OF JAPAN, LTD.
J --------------------- U.S.A.
COMPULINK
MASTER VOLUME
ADJUST
SETTING
CONTROL
DOWN
UP
FM/AM
RX-7020VBK
Area suffix
Remote
No.21075
Mar. 2002
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Summary of Contents for JVC RX-7020VBK
- Page 1 RX-7020VBK SERVICE MANUAL AUDIO/VIDEO CONTROL RECEIVER RX-7020VBK Area suffix J --------------------- U.S.A. A/V CONTROL RECEIVER CATV/DBS AUDIO DVD MULTI FM/AM TV/DBS TAPE/CDR PHONO BASS TREBLE SURROUND SURROUND ANALOG/DIGITAL SLEEP ON/OFF MODE INPUT BASS BOOST EFFECT – CENTER + MENU RX-7020V AUDIO/VIDEO CONTROL RECEIVER...
- Page 2 RX-7020VBK 1. This 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. Services should be performed by qualified personnel only.
- Page 3 RX-7020VBK Importance administering point on the safety LVA1029-C9 B110 PW104 TA201 B109 B108 B106 Primary part PW105 PW102 TA202 B105 B107 B104 FC211 PW103 6.3A-125V B103 F 201 B102 PW101 B101 FC212 B192 B191 FC232 FC222 B159 Secondary parts F 203...
- Page 4 RX-7020VBK Disassembly method Top cover Removing the top cover (See Fig.1) Remove the four screws A attaching the top cover on both sides of the body. Remove the three screws B on the back of the body. Remove the top cover from behind in the direction of Fig.1...
- Page 5 RX-7020VBK Removing each board connected to the rear side of the audio board CN411 (See Fig.5 to 9) Prior to performing the following procedure, remove the top cover and the rear panel. Audio Cut off the tie band fixing the harness.
- Page 6 RX-7020VBK Removing the audio board (See Fig.10) Relay board Prior to performing the following procedure, remove the top cover and the rear panel. power supply board Disconnect the card wire from connector CN402 on the audio board. CN473 CN291 Disconnect the relay board from the audio board and the power supply board.
- Page 7 RX-7020VBK Removing the power transformer (See Fig.15) Prior to performing the following procedures, remove the top cover. Power Cut off the tie band fixing the harness. supply board Unsolder the two harnesses connected to the power FW201 transformer. Solder points...
- Page 8 RX-7020VBK Removing the system control board / Operation switch panel Front panel assembly power switch board (See Fig.18 to 20) Prior to performing the following procedure, remove the top cover and the front panel assembly. Pull out the volume knob on the front side of the front panel and remove the nut attaching the system control board.
- Page 9 RX-7020VBK Adjustment method Tuner section 1. Tuner range 87.5MHz~108.0MHz AM (MW) 530kHz~1710kHz Power amplifier section Adjustment of idling current Measurement location TP301 (Lch) , TP302 (Rch) Adjustment part VR301 (Lch) , VR302 (Rch) Attention This adjustment does not obtain a correct adjustment value immediately after the amplifier is used (state that an internal temperature has risen).
- Page 10 RX-7020VBK Description of major ICs AK4527BVQP (IC601) : A/D,D/A converter 1.Pin layout Top View 2. Pin function (1/2) Symbol Function SDOS SDTO Source Select Pin (Note 1) "L" : Internal ADC output, "H" : DAUX input OSKS Control Mode Select Pin "L"...
- Page 11 RX-7020VBK Pin function (2/2) AK4527 Symbol Function Connect to GND ICKS No internal bonding. Analog Input Format Select Pin, Digital Power Supply ADIF "H" : Full-differential input, "L" : Single-ended input Chip Address 1 Pin, Connect to GND CAD1 Chip Address 0 Pin, Connect to GND...
- Page 12 RX-7020VBK M62446FP (IC428) : 6ch master volume 1.Block Diagram OUT4 DVDD OUT- OUT3 OUT2 DATA PORT volume OUT1 LATCH AVDD DGND volume SWIN AGND GNDS SWout SRin SRout volume SLin SLout GNDC Cout volume Rout GNDR Lout AVSS volume GNDL...
- Page 13 RX-7020VBK 2.Pin Function M62446FP Pin No. Symbol Function OUT4 BASS BOOST control terminal OUT3 SURROUND control terminal OUT2 VIDEO 2 control terminal VIDEO 1 control terminal OUT1 AVDD Analog positive power supply terminal SUB Woofer volume signal input terminal SW IN A.GND...
- Page 14 RX-7020VBK MN101C35DJW (IC701) : System controller 1. Pin layout 2. Pin function (1/2) Symbol Function Pin No. VOL.JOG IN_1 VOL.JOG IN_1 VOL.JOG IN_2 VOL.JOG IN_2 DATA (PLL) DATA (PLL) (PLL) (PLL) (PLL) (PLL) VIDEO S/C DVD VIDEO S/C DVD VIDEO S/C VCR...
- Page 15 RX-7020VBK Pin function (2/2) MN101C35DJW Symbol Function Pin No. (DSP) CLK DSP READY READY (DSP) RESET (DSP) RESET RY S RELAY SURRUND RY C RELAY CENTER RY L/R1 RELAY FRONT 1 RY L/R2 RELAY FRONT 2 RELAY HEADPHONE RY HP...
- Page 16 RX-7020VBK UPD784215AGC167 (IC671) : Dital signal controller 1.Pin layout 2.Pin function (1/2) Pin No. Symbol Function Non connect Power supply terminal Connecting the crystal oscillator for system main clock Connecting the crystal oscillator for system main clock Connect to GND...
- Page 17 RX-7020VBK Pin function (2/2) UPD784215AGC167 Pin No. Symbol Function Interface I/O terminal with microcomputer MILP Interface I/O terminal with microcomputer MIACK Non connect Non connect Reset signal output of DSP DSPRST Non connect 54~63 Interface I/O terminal with microcomputer CODEC OUT...
- Page 18 RX-7020VBK LA1838 (IC102) : FM AM IF amp. & Detector, FM MPX decoder 1. Block Diagram DECODER RF.AMP ANIT-BIRDIE MUTE BUFF STEREO P-DET AM IF PILOT 384KHz COMP S-METER AM/FM S-CLRVE S-METER IF-BUFF TUNING STEREO DRIVE DRIVE FM IF 2. Pin Function...
- Page 19 RX-7020VBK LC72136N (IC121) : PLL frequency synthesizer 1. Pin layout FM/AM LPFOUT LPFIN CLOCK FM/ST/VCO FMIN AM/FM AMIN IFCONT SDIN IFIN 2. Block diagram Phase Reference Detector Driver Charge Pump Swallow Counter Swallow Counter 1/16,1/17 4bit 1/16,1/17 4bit Unlock Detector...
- Page 20 RX-7020VBK TC9446F-025 (IC631) : Digital signal processor for dolby digital (AC-3) / DTS audio decode Pin No. Symbol Function Reset signal input terminal (L:reset H: normal operation) MIMD Microcomputer interface mode selection input terminal (L:serial H:IC bus) Microcomputer interface chip select input terminal...
- Page 21 RX-7020VBK TC9162AF (IC423) : Analog switch 1. Pin layout 2. Block diaglam R-S1 L-S1 R-S2 L-S2 R-COM1 L-COM1 R-S3 L-S3 R-S4 L-S4 R-COM2 L-COM2 R-S5 L-S5 R-S6 L-S6 R-COM3 L-COM3 R-S7 L-S7 R-COM4 L-COM4 DATA SHIFT REGISTER BA15218 (IC451) : Ope. Amp.
- Page 22 RX-7020VBK TC74HC4053AF (IC581) : Multiplecer Contorol inputs INHIBIT Y-COM X-COM Z-COM X: Don't Care. NJM2246D (IC501, 551, 552) : Video switch 1. Pin layout / Block diaglam Vout Vin3 Control input - output signal CTL 1 CTL 2 Output AMP.
- Page 23 RX-7020VBK TC7SET32FU (IC672) : Z-Input or gate IMX9-W (IC652, IC662, IC682) : Driver 1. Pin layout / Block diagram 1. Pin layout / Block diagram IN B IN A OUT Y TC74HCU08AF (IC611) : Inverter 1. Pin layout / Block diagram 2.The truth value table...
- Page 24 RX-7020VBK W24L010AJ-12 (IC641) : SRAM 1. Pin layout 2. Block diaglam DECODER CORE ARRAY I/O1 CONTROL DATA I/O I/O8 3. Pin function Pin No. Symbol Function Symbol Pin No. Function No Connection I/O4 Data Input/Output Address Input I/O5 Data Input/Output...
- Page 25 < M E M O >...
- Page 26 RX-7020VBK VICTOR COMPANY OF JAPAN, LIMITED AUDIO & COMMUNICATION BUSINESS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.21075) 200203...
- Page 27 RX-7020VBK Block diagram MONITOR MONITOR DVD FRONT IC451 SELECTOR SELECTOR DVD IN TUNER SELECTOR MONITOR CENTER IC551 RF101 IC581 IC121 VCR REC IC501 IC552 IC582 DVD REAR/ VCR REC VCR PLAY SUB WOOFER AM/FM DET MW RF&OSC VCR P.B. TV/DBS...
- Page 28 RX-7020VBK RX-7020VBK Standard schematic diagrams Power supply section Component video terminal section To sheet 5/8 G-3 FW501 D1501 PW311 11ES2-T4 PW101 J1501 QNN0391-001 CN251 QGA3901F2-03 C1530 1.5ML C1518 C1520 C1522 To sheet 6/8 G-2 F202 R1508 R1510 R1512 QGF1205C1-14 CN201...
- Page 29 RX-7020VBK Audio & Speaker terminal section To sheet 1/8 D-5 EP301 CN351 C1301 0.1/160 ST302 C1302 QNB0001-002 0.01/500 QQLZ005-R45 D1301 L1351 R1351 RY301 B1005 QSK109-001 D1304 C1303 0.01/500 C1358 220p C1305 C1304 6800/63 6800/63 CN321 GGB2510J1-14 ST301 R1301 3.3k L1352...
- Page 30 RX-7020VBK RX-7020VBK Audio amplirier section TP301 C819 10/100 R821 R321 C821 C321 R849 Q315 Q805 Q815 R815 R831 KTA1268/GL/ R349 C307 D305 C319 Q819 Q319 C815 0.0015 1SS133 R331 100/63 R829 VR301 KTA1268/GL/ R339 KTA1268/GL/ D805 R307 R363 C817 2.7k 2.7k...
- Page 31 RX-7020VBK Main section Main section (Volume / Regulator / source select) To sheet 8/8 E-1 To sheet 7/8 G-3 To sheet 5/8 D-3 To sheet 6/8 C-1 CN412 CN411 CN421 CN481 CN402 QGB2501J1-12 QGB2510J1-14 QGB2510J1-20 QGF1205C1-25 VGA2501C1-04 CN403 C1425 R1453...
- Page 32 RX-7020VBK RX-7020VBK Audio / Video signal input terminal section C408 IC401 100p NJM4580DD C414 R406 R410 R408 4.7/50 C415 470k 47/16 C412 C410 C406 R412 100/10 0.0068MY 0.0018MY 100k C400 0.022 R409 R407 J401 470K QNN0389-001 C405 100/10 C411 C409 0.0068MY 0.0018MY...
- Page 33 RX-7020VBK Digital signal input terminal / Surround section C627 TP601 J601 R621 K601 NQR0319-001 R622 D609 D610 1/50 QNN0347-001 IC621 1SS355-X 1SS355-X C622 TC74HCU04AF C621 100p C630 J601 C626 R627 4.7k C629 TP602 R629 C608 R617 R618 IC612 TC74HC4072AF TP509...
- Page 34 RX-7020VBK RX-7020VBK User control / System control / FL displaying section C709 C707 4.7/50 4.7/50 QRB079J-104 QRB079J-104 RA701 RA702 GRID1 Q707 DTC114Y GRID2 Q708 DI701 DTC114Y QLF0098-001 GRID16 Q709 DTC114Y RDS_CLK R782 RDS_DATA R781 RDS_DAVN R780 CN703 QJK021-043004 SEG12 GRID15...
- Page 35 RX-7020VBK Tuner section FM/TUNER Signal Parts are safety assurance parts. When replacing those parts make sure to use the specified one. CN411 sheet 4/8 B-5 SHEET 8/8...
- Page 36 RX-7020VBK RX-7020VBK Printed circuit boards Wire protection board Main board Audio input board S Video board Main board 2-10...
- Page 37 RX-7020VBK System control & Audio board System control & displaying board Audio board 2-11...
- Page 38 RX-7020VBK RX-7020VBK Power amp. board Amplifier board Power transformer board Relay board 2-12...
- Page 39 RX-7020VBK Digital signal input terminal board Forweard side Reverse side 2-13...
- Page 40 RX-7020VBK Tuner board AT101 Q112 B105 D124 [DOM] D125 C107 B198 [DOM] B173 B197 Q103 B123 R108 R109 L111 B194 Q111 R119 C117 C118 C158 R105 R107 B180 R129 C157 B192 R146 C105 C168 B195 B189 B193 C138 C133 R103...
- Page 41 RX-7020VBK PARTS LIST [ RX-7020VBK ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix J ----------------------------- U.S.A. - Contents - 3- 3 Exploded view of general assembly and parts list (Block No.M1) 3- 5 Electrical parts list (Block No.01~05)
- Page 42 RX-7020VBK < M E M O >...
- Page 43 RX-7020VBK Exploded view of general assembly and parts list Block No. Power trans board Speaker Power trans board board Power/Fuse board Relay board Main board Audio board power switch board Power supply board System control board...
- Page 44 RX-7020VBK RX-7020VBK 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 LV10457-014A FRONT PANEL SPECIAL SCREW 5 INPUT QYSBSGY3008M...
- Page 45 RX-7020VBK Electrical parts list (Power amp board) Block No. 01 Item Remarks Item Remarks Parts number Parts name Area Parts number Parts name Area C 201 QFLC2AJ-104Z M CAPACITOR .10MF 5% 100V C 812 QCS31HJ-100Z C CAPACITOR 10PF 5% 50V...
- Page 46 RX-7020VBK Electrical parts list (Power amp board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area D 220 11ES2-T4 DIODE I.M Q 304 2SC2240/L/-T TR.I/M D 221 1SS133-T2 SI DIODE IM Q 305...
- Page 47 RX-7020VBK Electrical parts list (Power amp board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area R 307 QRE141J-272Y C RESISTOR 2.7K 5% 1/4W R 514 QRE141J-151Y C RESISTOR 150 5% 1/4W...
- Page 48 RX-7020VBK Electrical parts list (Power amp board) Block No. 01 Item Parts number Parts name Remarks Area R 862 QRE141J-332Y C RESISTOR 3.3K 5% 1/4W R 863 QRE141J-272Y C RESISTOR 2.7K 5% 1/4W R 864 QRE141J-272Y C RESISTOR 2.7K 5% 1/4W...
- Page 49 RX-7020VBK Electrical parts list (Main board) Block No. 02 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area C 400 QCBB1HK-223Y C CAPACITOR .022MF 10% 50V C 558 QCS31HJ-470Z C CAPACITOR 47PF 5% 50V C 401...
- Page 50 RX-7020VBK Electrical parts list (Main board) Block No. 02 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area IC402 TC9164AN R 444 QRE141J-104Y C RESISTOR 100K 5% 1/4W IC403 BA15218N R 445 QRE141J-104Y C RESISTOR...
- Page 51 RX-7020VBK Electrical parts list (Main board) Block No. 02 Item Parts number Parts name Remarks Area R1355 QRJ146J-392X UNF C RESISTOR 3.9K 5% 1/4W R1356 QRE141J-472Y C RESISTOR 4.7K 5% 1/4W R1357 QRE141J-223Y C RESISTOR 22K 5% 1/4W R1358 QRE141J-682Y C RESISTOR 6.8K 5% 1/4W...
- Page 52 RX-7020VBK Electrical parts list (System control & Audio board) Block No. 03 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area BK701 LV42093-001A FL HOLDER(L) C1429 QCB31HK-822Z C CAPACITOR 8200PF 10% 50V BK702 LV42092-001A FL HOLDER(R)
- Page 53 RX-7020VBK Electrical parts list (System control & Audio board) Block No. 03 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area D1409 1SS355-X DIODE C.M Q1432 KRC104M-T D.TR.I.M D1410 1SS355-X DIODE C.M Q1433 KRC104M-T D.TR.I.M...
- Page 54 RX-7020VBK Electrical parts list (System control & Audio board) Block No. 03 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area R 738 NRSA63J-102X MG RESISTOR R1418 QRZ9005-680X F RESISTOR 68 1/4W R 739 NRSA63J-122X...
- Page 55 RX-7020VBK Electrical parts list (System control & Audio board) Block No. 03 Item Parts number Parts name Remarks Area R1500 NRSA63J-474X MG RESISTOR R1501 NRSA63J-750X MG RESISTOR R1502 NRSA63J-750X MG RESISTOR R1503 NRSA63J-750X MG RESISTOR R1504 NRSA63J-750X MG RESISTOR R1505...
- Page 56 RX-7020VBK Electrical parts list (DSP board) Block No. 04 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area C 601 NCB31HK-102X C CAPACITOR C2504 QETN1HM-475Z E CAPACITOR 4.7MF 20% 50V C 602 NCB31HK-102X C CAPACITOR...
- Page 57 RX-7020VBK Electrical parts list (DSP board) Block No. 04 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area IC651 BA15218F-XE R 671 NRSA63J-103X MG RESISTOR IC652 IMX9-W TRANSISTOR R 672 NRSA63J-105X MG RESISTOR IC661 BA15218F-XE...
- Page 58 RX-7020VBK Electrical parts list (DSP board) Block No. 04 Item Parts number Parts name Remarks Area R2558 NRSA63J-273X MG RESISTOR R2560 NRSA63J-105X MG RESISTOR R2561 NRSA63J-104X MG RESISTOR R2562 NRSA63J-104X MG RESISTOR R2563 NRSA63J-103X MG RESISTOR R2564 NRSA63J-103X MG RESISTOR...
- Page 59 RX-7020VBK Electrical parts list (Tuner board) Block No. 05 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area AT101 QNB0014-001 ANT TERMINAL R 115 NRSA02J-104X MG RESISTOR BK 1 LV31618-001A SHIELD BKT R 119 NRSA02J-103X...
- Page 60 RX-7020VBK Packing materials and accessories parts list Block No. Block No. A2~A7 3-20...
- Page 61 RX-7020VBK Parts list (Packing) Block No. M3MM Item Parts number Parts name Q'ty Description Area QPA02503505P POLY BAG LV20983-020A CARTON BOX LV20925-001A PACKING PAD LV20926-001A PACKING PAD QPC06507015P POLY BAG Parts list (Accessories) Block No. M5MM Item Description Parts number...