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STEREO INTEGRATED AMPLIFIER/TUNER

C-V751

SERVICE MANUAL

© 1999-8/B51-5566-00 (K/K) 1992

70%

Caution : No connection of ground line if disassemble the unit.

Please connect the ground line on rear panel, PCBs, Chassis and some
others.

ON/STANDBY

PHONES

INPUT

TAPE  2

/ MONITOR

VOLUME CONTROL

DOWN

UP

DIGITAL

REC

TIMER
MODE

RDS

PTY

DISPLAY

CLOCK

TA/NEWS

DTS

A.MEMO

AUTO

BAND

TUNING

PTY SELECT

LISTEN

MODE

MULTI.CONTROL

LEVEL

OPEN/CLOSE

SET UP

SOUND INPUT MODE

DIGITAL

CIRCLE

SURROUND

TIMER

SET

ANTENNA

AM

FM 75

GND

CONNECT
WITH
POWER AMPLIFIER

UNSWITCHED

SYSTEM

CONTROL

FRONT

SURROUND CENTER

PRE OUT

SUB WOOFER

L

R

REC

PLAY

REC

PLAY

PLAY

PLAY

PLAY

PLAY

DVD/

6CH.INPUT

MONITOR

OUT

REC

PLAY

REC

VIDEO  1

VIDEO  2

VIDEO

DIGITAL IN

FRONT

SURROUND CENTER

SUB WOOFER

CD

MD/TAPE1

TAPE 2/MON

CD

(OPTICAL 1)

DVD

(COAXAL)

DVD/6CH.INPUT

DIGITAL IN

Panel
(A60-1686-01)

Front glass
(B10-2351-14)

Phone jack
(E11-0280-05)

Knob
(K29-6665-02)

Knob
(K29-6666-12)

Knob
(K29-7591-02)

Knob
(K29-6665-02)

Knob
(K29-6660-04)

Knob
(K29-6665-02)

Metallic cabinet
(A01-3702-01)

Lock terminal board
(E70-0052-05)

Phono jack
(E63-0094-05)

Phono jack
(E63-0199-05)

Power cord bushing
(J42-0083-05)

Rectangular receptacle
(E58-0018-05)

Phono jack
(E63-1084-05)

Phono jack
(E63-0136-15)

Phono jack(6P)x2
(E63-0139-15)

Phono jack
(E63-1084-05)

AC power cord *
(E30-)

AC outlet *
(E03-)

Phono jack
(E63-0093-05)

Optical receiving module
(W02-1181-05)

Miniature phone jack
(E11-0293-05)

* Refer to parts list on page 33.

Indicator
(B12-0311-04)

Front glass
(B10-2350-14)

Summary of Contents for C-V751

Page 1: ...AY PLAY PLAY DVD 6CH INPUT MONITOR OUT REC PLAY REC VIDEO 1 VIDEO 2 VIDEO DIGITAL IN FRONT SURROUND CENTER SUB WOOFER CD MD TAPE1 TAPE 2 MON CD OPTICAL 1 DVD COAXAL DVD 6CH INPUT DIGITAL IN Panel A60 1686 01 Front glass B10 2351 14 Phone jack E11 0280 05 Knob K29 6665 02 Knob K29 6666 12 Knob K29 7591 02 Knob K29 6665 02 Knob K29 6660 04 Knob K29 6665 02 allic cabinet 1 3702 01 Lock terminal board...

Page 2: ... e m u s i c s o u n d l i s t e n mo d e S l e e p V751 CONTENTS ACCESSORIES DISASSEMBLY FOR REPAIR ENTS ACCESSORIES 2 SSEMBLY FOR REPAIR 2 UIT DESCRIPTION 3 STMENT 7 G DIAGRAM 8 OARD 9 SCHEMATIC DIAGRAM 15 EXPLODED VIEW 32 PARTS LIST 33 PARTS DESCRIPTIONS 39 SPECIFICATIONS Back cover ents ssories ove the 1 screw 1 Then pull the slider 2 till last e raise the slider of left side remove the slider...

Page 3: ...ation of the sub clock diagnosed again If the result is OK the system enters the test mode If the diagnosis result is continuous ly NG 5 times the system stops with ERR1 and ERR2 displayed 3 5 Tuner test mode When selector is set to TUNER P CALL of preset channel S level indication Set the TUNER ATT to ON OFF and display the S level in hexadecimal when the PTY key is pressed Indication of FL for T...

Page 4: ...pen M CLOSE O Control terminal of motor driver Motor CCW î Door close OPEN SW I Detection port of door open close switch Open CLOSE SW I Detection port of door open close switch Close DIG H O Port for digital input RWR I Reading of interactive remote control data H End of reading data ENB I Permission of transmission Permission REQ O Request of transmission No Request 8 R DATA1 8 O Data output to ...

Page 5: ...15 DSP RST1 O Reset output to DSP IC6 RDS DATA I Data input from RDS decoder RDS CLK I Clock input from RDS decoder DSP D1 I Data input from IC15 DSP DO O Data output to IC6 DSP CO CLK O Clock output to IC15 and IC6 ABOOT1 I O ABOOT output INTREQ input port HP DETECT I Detection port of headphones H P ON HP MUTE O Muting control of audio signal for headphones Mute OFF Mute ON REMOCON I Input port ...

Page 6: ...Y1 KEY4 I Key return 1 4 VDD Power supply 5V KS1 P17 O Key scan 1 and FL segment17 KS2 P16 O Key scan 2 and FL segment16 KS3 P15 O Key scan 3 and FL segment15 KS4 P14 O Key scan 4 and FL segment14 KS5 P13 O Key scan 5 and FL segment13 KS6 P12 O Key scan 6 and FL segment12 KS7 P11 O Key scan 7 and FL segment11 1 P10 P1 O FL segment10 to1 G11 O FL grid output 11 VDD Power supply 5V VEE Power supply ...

Page 7: ...N a B L32 T L5 E X Minimum distrotion DISTORTION STEREO C 98 0MHz STEREO 1kHz 40kHz dev pilot 6kHz dev 60dBu ANT INPUT B AUTO 98 0MHz IFT front end Mininum distrotion a ANTENNA AM FM 75Ω GND CONNECT WITH POWER AMPLIFIER UNSWITCHED SYSTEM CONTROL FRONT SURROUND CENTER PRE OUT SUB WOOFER L R REC PLAY REC PLAY PLAY PLAY PLAY PLAY DVD 6CH INPUT MONITOR OUT REC PLAY REC VIDEO 1 VIDEO 2 VIDEO DIGITAL IN...

Page 8: ...75 GND AM ANT FFC FFC FFC FFC REC TAPE2 MONITOR PLAY OPTICAL IN CD TRANSFORMER POWER ABB T X E ABB T X E AUSTRALIA EUROPE U K X11 386X XX X08 299X XX COUNTRY DESTINATION EUROPE AUSTRALIA U K COUNTRY DESTINATION 2 70 0 51 UNIT No 2 70 0 51 0 71 UNIT No W W 2 1 1 4 1 4 P1 1 31 1 31 1 27 1 27 9 1 9 1 15 15 1 1 15 15 1 1 1 25 1 25 1 27 1 27 1 5 10 1 1 10 6 6 1 1 F1 F5 F4 F3 WHT WH1 WH2 RED 27 27 31 31...

Page 9: ... R9 R6 R7 R35 R39 R38 R23 R28 R25 R76 W83 R74 R78 R47 W84 R45 R46 W61 R27 C31 C76 C79 W51 R31 R36 W55 R83 C77 W62 R64 R65 R60 R59 R58 W52 R30 C80 R72 C71 R73 C70 C34 C33 W82 C64 R37 W80 W54 R88 R85 C86 C85 R86 R87 C74 C40 R90 E B E B E B E B E B E B E B E B E B E B EB E B E B 1 8 16 9 E1 ANTENNA CN1 D6 A1 IC1 D4 D3 D9 D5 IC2 CN2 J1 X05 5082 70 J70 1353 01 S1 ON OFF W5 W6 W7 W4 W19 W22 W21 W20 W14 ...

Page 10: ...4 R93 R92 W41 C4 R52 R51 R69 C5 C3 R76 R70 R71 R72 R73 R74 C9 C12 R62 R61 R60 C11 R75 C8 C10 R59 C6 R54 R58 R56 C7 R68 R67 R66 R65 R57 R55 W39 R79 R80 R81 R85 W40 R53 C21 B E 5 2 B E E B 1 3 1 9 2 2 9 27 1 2 26 dts B E E B 5 2 E B 2 24 W17 1 52 13 14 26 27 39 40 51 1 Q1 Q6 CN4 WH2 WH1 D14 S8 S3 S4 S7 Q4 Q3 A1 D1 D4 S14 S13 S15 S1 S5 D2 D3 S12 S9 S11 S10 S21 S22 S18 S20 S19 S26 S17 S23 S24 S2 D6 D5...

Page 11: ...G LED R 12 288MHz 16MHz 1 4 332MHz T R D RECROUT 1 H2 OE OE1 OE2 CS2 CS1 OESL AB2 AB1 DI CLK DI CS ERR CODEC CS CE1 CE2 C183 C309 C308 C307 R235 C185 C317 R234 X4 X5 R58 L2 C101 C102 C93 C94 C105 C106 C103 C104 C83 C71 C74 C61 C62 C82 C77 C78 C163 C188 C164 C194 C195 C189 C190 C153 C154 C129 C130 C181 C182 C30 C11 C1 1 3 C39 C56 C34 R55 R197 R198 R112 R114 R29 C69 C166 C165 C171 C172 X2 C216 C215 ...

Page 12: ...C11 C12 W18 W32 R14 W46 W43 W31 R396 R21 W33 R22 R395 R12 R11 R13 R7 R6 R10 W75 W8 W2 W39 W55 W53 W143 C140 C309 C319 C320 R54 C52 R53 R58 R56 R63 R62 R60 W79 W21 W17 C139 C53 R61 C51 R57 W15 R59 R67 R66 R64 C54 R71 R70 R68 C55 R69 W10 W19 W40 W48 R152 C362 C315 W91 W13 W12 W47 W38 W44 W36 W16 W27 C383 R355 C387 C381 R381 R393 R389 R383 C384 R391 C385 R356 C388 R392 C382 C386 R394 R390 R384 C395 C...

Page 13: ...33K 33K R86 R87 33K 3300P C85 3300P C84 56K R88 3300P C88 33K R89 R20 C91 R79 3 3K R33 R34 1K W60 VREF T METER B I F B B B B B 15V 15V 15V B B B B B 15V R8 22 100 R27 R28 C24 3 9K 3 9K 0 018 27K 1K R83 27P C43 C41 22P L9 10uH 2P C40 C2 0 01 R2 220 IF OUT VT VCC OSC 5P 0 100 C4 C2 C1 4 GND 3 GND 27P C3 ANT1 2 GND 1 L1 27P 15P 100K 100K 3 7P C5 C14 0 1 R3 R1 L2 0 5P C6 10P C7 5 10P L4 L3 150K R19 10...

Page 14: ... DECODER UNTIBIRDIE VCO FF STEREO DRIVE 24 23 22 21 FF X31 C36 0 047 10u16 C35 10u16 C33 C34 0 01 C32 C31 47u16 0 01 C37 33K R59 2 7K 22P C45 R37 C44 0 047 0 47u50 C43 100u10 C46 R38 33K 100P C70 C47 1u50 C49 R36 2 1 10uH L63 2P C68 2K R40 C92 R85 1K C84 1000P R86 1K R88 1K 1K C86 1000P C85 100P C89 47u16 1K R87 R91 C90 2 2u50 C91 0 022 100 1 4W R93 1 2K 12K R92 C96 47u16 C1 R1 220 1 4W R2 10K R69...

Page 15: ...00P R48 L36 1K 1K 3 9K 3 9K C55 C56 2 2K C53 MONO 1 GND 10 2 3 4 5 6 4 2 3 5 T MUTE PLL CE PLL DO PLL CLK PLL DATA 9 8 7 Lch 15V 15V 15 13 14 11 12 SD DET OUT S LEVEL Rch STEREO 100K R52 0 1 C60 1K R53 10K R50 100 3 9K R51 R57 100 C59 100P R56 R55 8 2K R103 R105 R101 820 1K 1K R102 2 2K W85 47K R104 11V 8V 15V 15V 15V 15V 15V 15V 15V 15V 0 027 5 6K CAUTION For continued safety replace safety criti...

Page 16: ...K R291 4 7K C208 0 1 10K R23 20 19 18 17 16 15 14 13 12 11 VCC Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 CK 1 2 3 4 5 6 7 8 9 10 OE D0 D1 D2 D3 D4 D5 D6 D7 GND 4 3 2 1 32 31 30 29 28 27 26 25 24 23 22 21 14 15 16 17 18 19 20 5 6 7 8 9 10 11 12 13 A12 A15 A16 VDD VCC A18 A17 A14 A13 A8 A9 A11 OE A10 CE Q7 Q1 Q2 GND Q3 Q4 Q5 Q6 A7 A6 A5 A4 A3 A2 A1 A0 Q0 91 92 M17 M18 M19 M20 M21 M22 M23 M24 M8 M6 M7 M2 M3 M4 M5 6 2 ...

Page 17: ...C32 12P C33 1M R51 1000P C196 1M R225 R336 L8 R44 220 220 42 43 26 25 R41 100 R42 100 R248 100 R247 100 61 62 100 99 98 97 96 95 94 93 92 91 63 64 66 65 67 68 78 77 C57 0 01 16 15 14 13 12 11 10 9 RDCL T57 XO XI VCC EXTS TM 1 2 3 4 5 6 7 8 QUL RDDA VREF MPXI OSEL GND ARI OUT 10K R271 C56 100u10 19 10 4 3 5 6 2 1 7 8 C210 0 01 R238 10 C211 0 01 1 2 3 4 8 7 6 5 R237 10 C311 0 01 1 2 3 4 8 7 6 5 R236...

Page 18: ... 18 19 20 21 22 23 24 25 26 27 KEY4 KEY3 KEY2 KEY1 S7 KS7 S6 KS6 S5 KS5 S3 KS3 S2 KS2 S1 KS1 LED R LED G REMOTE D GND 5V S4 KS4 POW KEY DOOR KEY LED AC3 LED DTS LED CS LED DOOR ENC1 ENC2 IR 6 2V IR GND OUT 4 LED AC3 DIN DOUT LED DTS 1 2 3 KS4 12 5V 8 30V LED DOOR CLK LED CS 6 5 7 NC STB KEY1 10 9 11 16 KEY4 KEY3 GND KEY2 14 13 15 KS5 KS7 KS6 18 17 19 KS1 KS3 KS2 20 21 22 23 H1 H2 24 25 C89 0 33 0 ...

Page 19: ...05 R306 100 4 7K R335 NO AUSTRALIA EUROPE U K E T X DESTINATION COUNTRY ABB NO YES 100P 1000P C332 C333 YES NO C334 NO YES NO YES WH2 WH1 NO YES W1 NO YES E1 D40 1555 02 C V751 3 5 F E D C 14 9V X08 299X XX 2SK302 TC9162AF NJM2279M LA1836 LC72131 TA78DL05S NJM4565L S 80740AL A4 NJU7312AL NJU7313AL CS4226KQG LA1837 TC7WU04FU 1 4 5 8 SAA6579T R TA78057S M62446FP CAUTION For continued safety replace ...

Page 20: ...APE2 PLAY 22K R213 18K R215 47K R217 47K R218 18K R216 22K R214 8 1 3 2 10u50 C203 220P C205 220K R201 10u50 C209 10u50 C210 4 7 6 5 R202 220K C206 220P 10u50 C204 8 3 2 1 R453 3 9K C454 100P 4 7u50 C451 220P C452 100K R451 8 2K R452 100P C453 10u50 C455 47 R454 6 5 7 4 11 12 13 14 100 10u50 C219 220K R209 100P C221 100P C223 10u50 C225 47 R219 R211 C220 10u50 100P C222 220K R210 100 R212 C224 100...

Page 21: ...815AHF X11 B 4 X11 D 4 C V751 Y05 3942 70 2SC2003 2SC2878 2SC3940A 2SA1175 2SC2785 2SA1048 2SC2458 2SA1576A 2SA1586 2SB1218A 2SC4116 2SD1819A 2SA1535A 2SB1370 2SD2061 2SB1375 2SD2012 2SC4081 2SD1757K NJM4565D NJM2058D TA8409S NJM4565M UPD16311 UPC7815AHF DA204U UN5212 CAUTION For continued safety replace safety critical com ponents only with manufacturer s recommended parts refer to parts list ind...

Page 22: ...1G d p n m j k a c b 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 35 36 37 38 39 40 41 42 43 44 F1 36 39 37 38 35 32 28 27 31 30 29 F2 F1 P17 2G L C R LFE SW LS S RS B B 6 2V 6 2V 6 2V 6 2V 6 2V 6 2V 6 2V 6 2V 6 2V 30V 30V 30V 30V 100 R81 100K R79 100K R80 43 0 01 C5 1000P C4 100u10 C3 F2 C2 100u16 100P C21 R25 10K 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V FL DRIVER CN2 CN1 E2 WH2 CN4 E1 ...

Page 23: ... INPUT MODE DIGITAL DSP CIRCIE SURROUND A 1 S 3 S 4 S 8 S 7 S11 S12 S10 S15 S14 S 5 S13 S 1 S30 S16 TAPE2 MONITOR INPUT J 3 J 1 J 2 J 5 J 6 J 7 J 4 TO AMPLIFIRE PRE OUT VCR 1 VCR 2 TAPE 2 DVD AC OUTLET A B C D E F G H J K L M N N09 2766 05 N09 3370 05 N82 2606 46 N82 2608 46 N86 4006 45 N89 3006 46 N85 2606 45 N89 3010 45 N89 3008 46 N89 3018 46 N35 2603 46 N19 0891 04 N09 1482 05 C V751 ANTENNA H...

Page 24: ... 53 WARRANTY CARD X B46 0310 03 WARRANTY CARD ET B58 0945 03 CAUTION CARD T B58 0965 13 CAUTION CARD PL TX B58 0966 13 CAUTION CARD PL E B60 4341 00 INSTRUCTION MANUAL EN TX B60 4342 00 INSTRUCTION MANUAL FR E B60 4343 00 INSTRUCTION MANUAL NE E B60 4344 00 INSTRUCTION MANUAL IT E B60 4345 00 INSTRUCTION MANUAL GE E B60 4393 00 INSTRUCTION MANUAL ES E 625 1A D10 3715 04 ARM ASSY 626 2A D10 3716 01...

Page 25: ...73FB2A823J R40 RK73FB2A202J R41 RK73FB2A222J R42 RK73FB2A202J R43 44 RK73FB2A222J R45 46 RK73FB2A102J R47 48 RK73FB2A392J R49 RK73FB2A473J R51 RK73FB2A392J R52 RK73FB2A104J R53 RK73FB2A102J R55 RK73FB2A562J R56 57 RK73FB2A101J R59 RK73FB2A272J R61 RK73FB2A223J R62 RK73FB2A105J R63 RK73FB2A473J R64 RK73FB2A103J R65 RK73FB2A153J R66 RK73FB2A152J R67 RK73FB2A104J R68 RK73FB2A222J R69 RK73FB2A103J R70...

Page 26: ...M6 Q6 7 2SC4116 Y GR Q6 7 2SC4177 L5 L6 Q10 11 2SD1757K Q12 2SA1586 Y GR Q12 2SA1611 M5 M6 Q14 2SA1586 Y GR Q14 2SA1611 M5 M6 A1 W02 2584 05 C1 CE04KW1A470M C2 CC73FSL1H470J C3 4 CK73FF1E104Z C5 CC73FSL1H220J C6 CK73FF1E104Z C7 8 CC73FSL1H220J C9 10 CK73FF1E104Z C11 CE04KW1H2R2M C12 CK73FF1E104Z C13 CC73FSL1H102J C14 CK73FF1E224Z C15 CK73FB1H103K C16 CK73FF1E104Z C17 CK73FB1H103K C19 20 CK73FF1E10...

Page 27: ...B2A102J R131 132 RK73FB2A101J R133 134 RK73FB2A302J R135 136 RK73FB2A132J R137 138 RK73FB2A273J R139 140 RK73FB2A101J R141 142 RK73FB2A224J R143 144 RK73FB2A103J R145 146 RK73FB2A104J R147 148 RK73FB2A622J R149 150 RK73FB2A103J R152 RK73FB2A104J R153 154 RK73FB2A203J R155 156 RK73FB2A222J R157 158 RK73FB2A104J R159 160 RK73FB2A222J R161 164 RK73FB2A432J R165 166 RK73FB2A302J R167 168 RK73FB2A222J ...

Page 28: ...181J C357 358 CC45FSL1H330J C359 360 CE04KW1H100M C361 362 CE04KW1E470M C363 364 CE04KW1H100M C365 CK45FF1H103Z C366 CC45FSL1H151J C367 368 CC45FSL1H470J C381 382 CE04KW1E470M C383 384 CC45FSL1H101J C385 386 CC45FSL1H181J C387 388 CC45FSL1H330J C389 390 CE04KW1H100M C391 392 CE04KW1E470M C393 394 CE04KW1H100M C395 CK45FF1H103Z C396 CC45FSL1H151J C397 398 CC45FSL1H470J C401 402 CE04KW1H100M C403 40...

Page 29: ...R Q5 2SC2785 F E Q6 2SC3940A R S A1 W02 2598 05 New Parts Parts without Parts No are not supplied Les articles non mentionnes dans le Parts No ne sont pas fournis Teile ohne Parts No werden nicht geliefert Scandinavia K USA P Canada R Mexico C China I Malaysia Y PX Far East Hawaii T England E Europe G Germany V China Shanghai Y AAFES Europe X Australia Q Russia H Korea M Other Areas indicates safe...

Page 30: ...C V751 39 PARTS DESCRIPTIONS ...

Page 31: ...nual is based on Europe E standard and provides n on regional circuit modification through use of alternate schematic diagrams and information on regional component variations through use of parts list o section armonic distortion 1 kHz 1V 0 01 to noise ratio IHF 66 93 dB ensitivity impedance 200 mV 47kΩ ontrols S 10 dB at 100 Hz BLE 10 dB at 10 kHz level impedance E REC 200 mV 1 kΩ o section inpu...

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