Kenwood KAC-8405 Service Manual Download Page 3

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KAC-8405

KAC-9405/9405M

COMPONENTS DESCRIPTION

●

AUDIO UNIT (X09-8940-10)

Ref. No.

Application / Function

IC1~4

Isolation circuit

IC5

Non-inverting circuit

IC6~IC8,IC11~IC13

HPF, LPF

IC9~IC10

Bass Boost circuit

IC14

DC-DC IC

IC15

ATT circuit

Voltage supply

Over voltage detection circuit

P-CON

Q4,Q7~Q9

Smoke and

re prevention circuit

Q5,Q6

Mute driver

Q10,Q11

Switch

Q12~Q15

Gate driver

Q16~Q19

DC-DC comparator

Q20,Q21

Regulated power supply

Q501~Q504,Q601~Q604

ATT circuit

Q505,Q506,Q605,Q606

Mute

Q507~Q514,Q607~Q614

Differential circuit - 1st stage

Q515,Q516,Q597,Q598,Q615,Q616,Q697,Q698

Differential circuit - 2nd stage

Q520,Q599

Power stage regulated power supply

Q521,Q522,Q619,Q620

Temperature compensation

Q523~Q526,Q621~Q624,Q704

Over current detection circuit

Q527~Q530,Q625~Q628

Darlington

Q531~Q534,Q629~Q632

Final stage

Q701~Q703

Latch circuit

Q705

FAN driver

Q706,Q708~Q710

Clipper circuit

Q707,Q714

Current control circuit

Q711,Q712

Temperature detection circuit

Q713

Shutdown

Q715,Q716

Auto P-CON circuit

Summary of Contents for KAC-8405

Page 1: ...uropean market SERVICE MANUAL 2009 12 PRINTED IN JAPAN B53 0772 00 N 341 POWER AMPLIFIER KAC 8405 KAC 9405 9405M Screw wrench key set N99 1820 05 Connecting cord assy E30 6144 05 19cm E M type M type Dressing Panel A21 6752 01 K type A21 6753 01 E type A21 6782 01 M type Fuse 30A F52 0045 05 ...

Page 2: ...DET DET BATT GND P CON Q523 526 Q703 Q711 712 SIGNAL DETECTOR Q715 716 Q3 PRIORITY P CON Q10 11 POWER ON OFF Q705 AVR FAN FAN POWER AMP BR BL SP OUTPUT INV 621 624 CLIPPER CLIPPER Q602 H P F IC12 IC13 L P F H P F L P F IC12 IC13 SENS VOL ST MONO MONO ST SENS VOL BR BL IC3 4 ISO AMP ISO AMP IC3 4 INV L P F L P F H P F IC7 IC8 H P F IC7 IC8 MUTE MUTE ATT Q502 CLIPPER 504 Q506 ATT CLIPPER Q501 503 Q5...

Page 3: ...rator Q20 Q21 Regulated power supply Q501 Q504 Q601 Q604 ATT circuit Q505 Q506 Q605 Q606 Mute Q507 Q514 Q607 Q614 Differential circuit 1st stage Q515 Q516 Q597 Q598 Q615 Q616 Q697 Q698 Differential circuit 2nd stage Q520 Q599 Power stage regulated power supply Q521 Q522 Q619 Q620 Temperature compensation Q523 Q526 Q621 Q624 Q704 Over current detection circuit Q527 Q530 Q625 Q628 Darlington Q531 Q5...

Page 4: ...83 W444 W462 W427 W437 W438 W523 W413 W377 W410 W414 W388 W415 W325 W417 W302 W301 W443 W381 W520 W526 C901 W400 C902 R762 C90 5 8 4 1 5 8 4 1 5 8 4 1 5 8 4 1 1 2 1 4 3 6 5 8 7 9 10 11 8 16 9 8 5 1 1 2 7 8 4 B E B E B E E B E B B E B E E B B E B E E B B E E B B E E B E B E B E B E B B B E B E E B B E B E E B E B B E AUDIO UNIT X09 8940 10 A 2 J76 0655 11 X09 B 2 IC9 IC10 IC11 IC12 IC13 IC14 Q711 D...

Page 5: ...R636 R637 R638 R639 R640 R641 R642 R643 R644 R647 R648 R649 R650 R651 R652 R653 R654 R655 R656 R657 R658 R659 R660 R661 R662 R663 R664 R716 R718 R719 R720 R727 R728 R729 R730 R734 R741 R744 R749 W339 W340 W348 W350 W363 W356 W355 W322 W343 W307 W342 W409 W392 W401 W422 W364 W399 31 30 W424 W420 W419 W312 W315 W327 W308 W305 W525 29 28 W395 W317 W318 W326 W330 W316 W372 W319 W329 W331 W333 W321 W33...

Page 6: ...7K TP733 TP732 C719 10u50 R756 10K 47K 4 15P 6 5 7 R118 10K C114 100P R120 C118 47u16 47K R119 C113 100P 8 3 R117 10K 15P 2 1 C117 47u16 C24 47u25 C23 47u25 47u25 C22 47u25 C21 R53 5 6K 5 6K R52 C20 3300u50 TP61 TP TP58 3300u50 R49 15K C19 TP60 TP57 TP 3 1 4 2 7 5 8 6 10 9 AR AR BR BR BL BL AL AL R109 12K R110 12K 15P C105 4 7K R105 1K R102 10K R115 10K R116 0 01 C107 0 01 C108 TP108 TP106 TP104 4...

Page 7: ... 10K 10K R725 R722 TP713 TP712 R731 2 3 TP709 1 2 2K R736 R739 22K R761 1 5K TP718 C715 1u50 TP724 R741 1 5K TP723 R745 R742 10K R744 R737 220K 10K TP720 TP722 R743 R740 16K C23 47u25 TP59 C18 TP58 1500P 10 11 9 TP719 TH1 TP721 6 7 8 C16 2200u16 1500P C14 TP52 R45 47 TP54 R43 47 C17 TP57 1500P 14 13 15 12 L2 7 3 TP56 R46 3 4 2 5 C15 2200u16 1 10 1 2W 47 R44 TP53 47 R42 10u50 TP51 C717 R753 10K 10K...

Page 8: ...7 R649 C617 10u50 C621 C619 R653 1K R651 1K R655 1000P C613 47P R633 C611 R643 56 100 47 R647 R667 0 1 R665 0 1 R661 1 1K 470 R534 100 R550 56 47P R532 2 2K C512 3P C510 47u25 1 8K R544 R554 47 C524 10u50 R560 R558 1K R562 1K TP530 R536 C516 100 R535 C520 10u50 C518 220u35 100 R556 47 C519 10u50 1K C517 R538 220u35 1K R537 R501 5 6K 10K R507 10K R513 R509 5 6K 470P 15K R517 C503 C501 10u50 R529 22...

Page 9: ...01 RKZ10KG B2 D6 13 706 708 709 LM1MA142WK G D7 B30 3220 05 D8 9 B30 1770 05 D10 12 18 503 506 513 514 517 520 603 608 611 612 702 705 710 HSU119TRF E D14 FCH10A20 D15 FRH10A20 D16 17 RKZ16KG B2 D501 502 601 602 1SS302 F D511 512 RKZ4 7KG B2 D704 RKZ12KG B2 MUTE DRV P CON R666 TP642 TP638 TP640 1 1K 0 1 2W R668 0 1 2W R664 TP644 R667 0 1 2W R665 0 1 2W R661 1 1K 1K R537 R715 47K R714 47K R713 47K ...

Page 10: ... E Gx2 Zx11 C C C C C 3 9 E E E E E E E E Ex5 Ex4 Ex2 723 720 Ax8 Ax4 Ax4 F F 715 719 16 E F F 719 16 E 702 A B C E F G Z N09 6365 05 N09 6726 05 N80 3008 43 N89 3008 48 N89 3016 48 N09 6447 05 N09 4214 08 Bundled to the transistor Bundled to the transistor Bundled to the transistor Parts with the exploded numbers larger than 700 are not supplied ...

Page 11: ...0PF K C103 104 CD04BJ1H100M ELECTRO 10UF 50WV C105 106 CC73GCH1H150J CHIP C 15PF J C107 108 CK73GB1H103K CHIP C 0 010UF K C109 110 CC73GCH1H101J CHIP C 100PF J C111 112 CC73GCH1H150J CHIP C 15PF J C113 114 CC73GCH1H101J CHIP C 100PF J C117 CD04AT1C470M ELECTRO 47UF 16WV C118 CD04AS1C470M ELECTRO 47UF 16WV C151 154 CK73GB1H104K CHIP C 0 10UF K C200 202 CK73GB1H102K CHIP C 1000PF K C203 204 CD04BJ1H...

Page 12: ...R 3 0K J 1 10W R409 410 RK73GB2A183J CHIP R 18K J 1 10W R411 412 RK73GB2A333J CHIP R 33K J 1 10W R413 414 RK73GB2A221J CHIP R 220 J 1 10W R415 416 RK73GB2A104J CHIP R 100K J 1 10W R417 422 RK73GB2A103J CHIP R 10K J 1 10W R423 424 RK73GB2A222J CHIP R 2 2K J 1 10W R425 426 RK73GB2A302J CHIP R 3 0K J 1 10W R427 428 RK73GB2A103J CHIP R 10K J 1 10W R429 430 RK73GB2A163J CHIP R 16K J 1 10W AUDIO UNIT X0...

Page 13: ... J 1 10W R655 656 RK73GB2A471J CHIP R 470 J 1 10W R657 660 RK73EB2E4R7J CHIP R 4 7 J 1 4W R661 664 RK73GB2A112J CHIP R 1 1K J 1 10W R665 668 R92 5413 05 METAL P R 0 1 J 2W R669 670 RK73EB2E473J CHIP R 47K J 1 4W R671 672 RK73PB2H100J CHIP R 10 J 1 2W R701 RK73GB2A222J CHIP R 2 2K J 1 10W R702 704 RK73GB2A103J CHIP R 10K J 1 10W R705 RK73GB2A332J CHIP R 3 3K J 1 10W R706 707 RK73GB2A103J CHIP R 10K...

Page 14: ...000J CHIP R 0 0 J 1 10W W421 RK73EB2E000J CHIP R 0 0 J 1 4W W422 423 RK73GB2A000J CHIP R 0 0 J 1 10W W424 RK73EB2E000J CHIP R 0 0 J 1 4W W425 436 RK73GB2A000J CHIP R 0 0 J 1 10W W437 RK73EB2E000J CHIP R 0 0 J 1 4W W438 439 RK73GB2A000J CHIP R 0 0 J 1 10W W440 442 RK73EB2E000J CHIP R 0 0 J 1 4W W443 RK73GB2A000J CHIP R 0 0 J 1 10W W444 445 RK73EB2E000J CHIP R 0 0 J 1 4W W446 447 RK73GB2A000J CHIP R...

Page 15: ...20 TRANSISTOR Q16 19 STP60NF06FP FET Q20 2SD2012 F TRANSISTOR Q21 2SB1375 F TRANSISTOR Q501 508 2SC4154 F TRANSISTOR Q509 510 ISA1602AM1 F TRANSISTOR Q511 512 2SC4154 F TRANSISTOR Q513 514 ISA1602AM1 F TRANSISTOR Q515 516 KTA1268 P TRANSISTOR Q520 KTA1268 P TRANSISTOR Q521 522 2SC4081 S TRANSISTOR Q523 524 2SC4154 F TRANSISTOR Q525 526 KTA1268 P TRANSISTOR Q527 528 2SC1627A F TRANSISTOR Q529 530 2...

Page 16: ...dB oct 50 Hz 200 Hz variable High Pass Filter Frequency 12 dB oct 50 Hz 200 Hz variable Bass Boost Control 40 Hz B channel 0 18 dB SPECIFICATIONS INSTALLATION General Operating Voltage 14 4 V 11 16 V allowable Current Consumption 34 A Dimensions W H D 280 59 238 mm 11 2 5 16 9 3 8 inch Weight 2 8 kg 6 1 lbs CEA 2006 K E type only RMS Watts per channel 4 ohms 1 THD N 60 W 4 Signal to Noise Ratio Re...

Page 17: ...79 W441 W485 W452 W483 W444 W347 W460 W461 W462 W427 W396 W405 W403 W437 W438 W385 W360 W346 W354 W374 W365 W380 W391 W349 W523 W371 W373 W378 W382 W404 W398 W413 W377 W410 W411 W414 W388 W415 W325 W417 W412 W386 W302 W390 W301 W344 W338 W352 W443 W336 W381 W524 W519 W522 W521 W516 W517 W518 W520 W526 C901 W400 C721 C902 R762 R761 R759 R760 C90 1 2 1 8 7 8 4 5 5 8 4 1 5 8 4 1 5 8 4 1 5 8 4 1 5 8 4...

Page 18: ... 1000P TP912 R650 R666 TP642 TP638 TP640 1 1K 0 1 2W R668 0 1 2W R664 TP644 R601 5 6K R607 10K R609 5 6K R613 10K R627 22K 470P R617 15K C603 C601 10u50 680 R625 C607 R621 47K 47P R629 22K 680 R623 R514 R508 TP502 R502 5 6K R510 5 6K 10K R512 10K 13K R516 R518 12K 15K 10u50 C502 680 R524 C508 47K R522 47P R528 22K R530 22K 680 R526 680 R525 470 1000P 3P R635 100 C615 47P C609 47u25 R631 2 2K 1 8K ...

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