Kenwood VR 3080 Service Manual - Page 20

VIDEO AE (X08-297X-XX) (A/10) VDD MONITOR OUT REC 2 OUT VIDEO1 PLAY 3 IN VIDEO2 PLAY IN VIDEO3 PLAY IN VIDEO4 PLAY IN J61 1 J62 1 2 3 CN61 +5.8V +13.7V AF D +17V 17V AG 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 V MUTE CONT E CONT D CONT C CONT B CONT A GND VDD AUX Y AUX C S1 OUT S1 AUX S1 V4 S1 V3 S1 V2 S1 V1 E D C B A +B 30 R637 100 29 R636 100 28 R635 100 27 R634 100 26 R633 100 25 CN10 TAPE2 IND VS C VS Y V COMP. V GND TCH SPACE TDO TCE TCK TDA T MUTE T STEREO TSD 1 2 3 4 5 6 7 8 9 10 11 12 13 96 R780 100 12 R781 100 20 R782 100 21 R783 100 18 R784 100 19 R785 100 17 R786 100 24 R787 100 23 IR VDD IR GND ENCB ENCA TX REM +13.7V 15 14 R791 100 Q853 +B C609 22u35 + C636 100P 5.4V +B R605 2.2 C607 100P R604 75 C605 100P R603 75 C603 100P R602 75 C601 100P R601 75 C613 100P R618 100K C623 100P R630 100K C622 R629 1000u6.3 75 + 3.4V 0V C612 1000u6.3 + 3.8V C602 22u35 + C604 22u35 + C606 22u35 + C608 22u35 + Q623,631 VIDEO MUTE 75 3.4V Q611,612,621,622 VIDEO AMP 16 3.7V 2.4V 1 MONI IN1 A 15 5.0V 2 GND OUT1 14 2.4V 3.8V 3 IN5 13 5.6V 4 VCC 3.8V 5 GND IN2 12 3.8V IN4 11 5.0V 5.0V 6 E B 10 3.8V 7 OUT2 IN3 9 E C 8 D D IC61 5.0V 35 36 C B A +B 5.0V VIDEO SEL. 32 33 34 1/4W R617 Q623 R628 100K R627 10K 4.1V R626 47 Q621 1.1V R623 10 4.1V Q622 1.7V 4.1V R613 10 Q611 1.7V Q612 R616 47 C631 10u50 + 4.1V ++ R612 39K R611 C611 47u25 8.2K C621 47u25 R622 39K R615 47 D611 R621 8.2K R614 180 C624 10u50 + R638 10 + C635 10u50 +B C634 0.1 +B R632 47K OUT IN 5.7V AVR GND C633 0.1 R619 4.7 1/4W 5.7V Q631 0.7V 31 5.7V 5.7V IC62 7.9V R631 1 1/4W +5.8V VDD +13.7V E VDD +5.8V AH +13.7V 12345 CN93 H R121 11K R122 11K R125 C121 22K 0.056 R123 22K 16.9V 28 3 5 6 -16.6V IC61 TRUE TABLE R124 22K 1 11K IC12 (1/2) 7 4 IC12 (2/2) R126 C122 22K 0.056 OUTPUT 1 MONITOR INPUT 16 VIDEO1 12 VIDEO2 7 VIDEO3 5 VIDEO4 3 AVAUX AI R127 R128 11K +17V 17V +17V R131 C123 22K 0.047 R129 22K 16.9V 28 1 3 IC13 (1/2) 5 6 -16.6V 14 R130 22K 7 4 IC13 (2/2) R132 C124 22K 0.047 VIDEO1 REC OUT 15 A 9C L H L H H AJ AK F G CN91 REM RST ST DO DI CLK IR GND IR VDD F2 F1 -B u-COM GND u-COM VDD 1 2 3 4 5 6 7 8 9 10 11 12 13 44 71 72 R790 100 73 74 75 +13.7V B +5.8V CN5 SEL DA SEL CK SEL ST SPA SPB SP C&S POWER SECOND FAST OFF u-COM VDD u-COM GND -B F1 F2 IR VDD DSP GND DSP VDD MUTE VDD A MUTE VPROT IPROT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 83 84 85 86 87 +5.8V B +13.7V VDD MUTEVDD 82a 89 88 33 34 35 32 93 91 92 VDD +13.7V +5.8V LSch Cch R425 1K + R417 16K IC12,13 CONFIS2 FILLTER 11 B 8D L L H H H 6B L H H or L C142 100P C141 0.01 +17V 17V C148 0.01 D101 C423 100P R427 10K R418 16K C413 10u50 R413 C409 820 0.018 R415 C411 3.9K 5600P 16.9V 9 DATA 8 CLK 10 STB 7 GND 11 TREBLE+ 6 12 TREBLE- 5 13 COM 4 14 BASS- 3 15 BASS+ 2 16 VDD 1 VSS C410 R414 0.018 820 C412 R416 C414 5600P 3.9K 10u50 -16.6V + IC42 C417 0.068 R421 3.9K R411 390K R422 3.9K R412 390K R420 680K C416 0.015 C415 0.015 R419 680K C418 0.068 -16.6V IC41 (1/2) 4 1 R410 180K C408 27P TONE AMP C407 27P R409 180K + 6 7 5 IC41 8 (2/2) 16.9V 17V 3 2 +17V R423 22K C419 820P C401 1u50 + FRch R401 8.2K C405 1u50 R405 120K C403 560P R407 43K C421 0.01 R403 2K C406 1u50 R408 R406 43K 120K C404 560P C422 100P R404 2K + MUTE VDD C402 1u50 + FLch R424 22K C420 820P R402 8.2K 17V +17V MUTE VDD R426 1K TONE D41 R142 4.7K C150 39P R145 100K C147 100P R144 4.7K R141144 -6dB ATT C149 39P R143 4.7K 15 CLK 14 GND 16 DATA ST 13 17 (FRONT) 12 18 DIR/DSP 11 19 (LPF) 10 20 ON 9 21 OFF 8 22 (SURR.) 7 23 6 ON 24 5 OFF 25 4 TONE 26 3 OFF 27 ON 2 28 VDD 1 VSS C145 0.01 C146 100P -16.6V IC15 TONE LPF ON/ OFF 16.9V R141 4.7K R2 4.7K C1 10u50 + Q3 Q4 C2 10u50 + 6 5 -16.6V 4 IC1(2/2) R17 IC1(1/2) 100 1 8 16.9V 3 2 R18 100 17V C8 C7 100P 100P R15 100 BUFFER R16 100 7 C6 C5 100P 100P C4 100P C3 100P R14 220K R13 220K C10 100P C9 0.01 R4 5.6K R10 2.4K R3 5.6K R9 2.4K +17V 17V 17.1V -16.5V R11 10K R12 10K -16.5V (X08- ) (I/10) Q3,4 -6dB ATT Q1 Q2 Q1,2 -3dB ATT R1 4.7K -16.5V R7 10K -16.5V R8 10K R6 5.6K R5 5.6K 123456 123456 17V +17V 123456 AVSS RECR RECL AVCC LT AGND RT CN3 7 CN2 7 7 CN1 +17V 17V -17.1V D452 R466 4.7 1/4W + 3.8V R467 4.7 1/4W D453 C457 100u10 + C459 10u50 C456 10u50 + R469 3.3K + R465 68K -16.5V C455 10u50 AL AM AN FLch Q462