Kenwood KAC-8402 Service Manual Download Page 3

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KAC-8402/8452

COMPONENTS DESCRIPTION

ADJUSTMENT

No.

ITEM

ALIGNMENT POINT

METHOD

ALIGN FOR

NOTE

VR1 (ALch)

Connect a DC voltmeter

IDLE

VR2 (ARch)

between check land

2.5mV

After Power on

CURRENT

VR3 (BLch)

(Refer to PC BOARD)

5 minutes

VR4 (BRch)

●

PREAMPLIFIER UNIT (X08-4200-10)

Ref. No.

Application / Function

IC1 (2/2)

ARch reversal buffer

IC1 (1/2)

BRch reversal buffer

IC4

Bch HPF

IC5

Ach HPF

IC6

Bch LPF

IC7,8

Bch Bass boost filter

●

AUDIO UNIT (X09-5840-1x)

Ref. No.

Application / Function

IC1,2

Input isolation amp

IC4

Switching regulator controller

IC6

For temperature protection and -3dB attenuator

comparators

For +15.6V AVR

For -15.6V AVR

Q3~8

DC/DC converter FET

Q9~12

For FET driving

Q13,14

FET drive low start SW

Q201~210

For ACH voltage amplifying step differential amplifying

Q211

For temperature compensation bias

Q212

For ACH voltage amplifying step differential amplifying

Q213

For temperature compensation bias

Q214~219

For ACH voltage amplifying step differential amplifying

Ref. No.

Application / Function

Q220

For ACH final current amplifying

Q221

For ACH voltage amplifying step differential amplifying

Q222,223

For ACH final current amplifying

Q225

For ACH final current amplifying

Q241,242

Mute

Q280

-3dB Attenuator circuit

Q282

-3dB Attenuator circuit

Q401~410

For BCH voltage amplifying step differential amplifying

Q411,412

For temperature compensation bias

Q415~422

For BCH voltage amplifying step differential amplifying

Q423~426

For BCH final current amplifying

Q443,444

Mute

Q481,482

-3dB Attenuator circuit

Q601

For shock noise prevention

Q602

P-CON ON/OFF processing

Q603

Mute driver

Q604

+B SW

Q605

P-CON ON/OFF processing

Q606

For BU excess voltage detection

Q610

For excess current detection and excess current

protection

Q611~614

For output DC abnormal voltage detection

Q615~618

For shock noise prevention

Q619,620

Logo LED power supply

Q621~628

For temperature detection

www. xiaoyu163. com

QQ 376315150

TEL 13942296513

TEL 13942296513 QQ 376315150 892498299

Summary of Contents for KAC-8402

Page 1: ...ng Panel A21 4464 02 Screw set N99 1759 05 Connecting cord assy E30 6144 05 KAC 8402 KAC 8452 K type Dressing Panel A21 4469 02 KAC 8452 K type A21 4470 02 KAC 8402 A21 4524 02 KAC 8452 E type KAC 8452 M type 19cm Fuse 40A F52 0016 05 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376...

Page 2: ...MUTE Q443 444 MUTE SPEAKER SPEAKER OUTPUT OUTPUT POWER AMP POWER AMP B B LPF IC6 X08 SW4 HPF OFF LPF 18dB IC7 8 X08 B B SW SW AB A SW0 L OUTPUT LEVEL R P CON CIRCUIT AVR P CON CONVERTER DC DC OVERLOAD PROTECTOR DC DETECTOP BATTERY CIRCUIT OVER VOLTAGE PROTECTION THERMAL 15V LINE IN 6dB 0dB 32 5dB 0dB INPUT SENS INPUT SENS A B LINE IN A B LINE OUT HPF OFF SW3 X08 X09 X09 www xiaoyu163 com QQ3763151...

Page 3: ...e amplifying step differential amplifying Ref No Application Function Q220 For ACH final current amplifying Q221 For ACH voltage amplifying step differential amplifying Q222 223 For ACH final current amplifying Q225 For ACH final current amplifying Q241 242 Mute Q280 3dB Attenuator circuit Q282 3dB Attenuator circuit Q401 410 For BCH voltage amplifying step differential amplifying Q411 412 For tem...

Page 4: ...6 R441 R442 R443 R444 R445 VCC VCC R446 R447 R448 R454 R455 R459 R470 R471 C W203 W192 W200 W340 W332 W306 W358 W359 W242 W188 W243 W183 W349 W344 W180 W169 W175 W345 W300 W309 W285 W313 W337 W310 W355 W356 W338 W312 W343 W321 W305 R300 W351 W341 W314 W168 W316 W320 W317 W333 W174 W311 W299 W287 W282 W298 W292 W303 W273 W361 W279 W222 W215 W228 W307 W342 W179 W301 W326 W214 W247 W246 W288 W281 W32...

Page 5: ...W148 W170 W176 W128 W130 W144 W162 W165 W150 W153 W135 W133 72 W151 W126 W134 W110 W116 W121 W120 W117 W113 W114 W112 W129 W127 W143 W141 W157 W152 W136 W163 W125 W106 W137 W138 W146 W131 W139 61 W108 W109 W147 W366 W367 W368 W369 C10 C11 C922 VR1 B VR2 W2 W3 W13 W14 E B E B E B E B E B E B E B E B E B E B S D G S D G S D G S D G S D G S D G E B B E B E B E B E B E B E B E B E B E B E B E B E B E ...

Page 6: ... W12 W34 W23 W28 W1 W30 W36 W55 W32 W57 W61 W29 W6 W60 W37 W13 W53 C111 C112 C209 C210 C215 C216 C217 C218 C220 W2 W31 W10 W54 W58 W64 W66 W11 W21 W67 W22 W63 W3 W62 W49 W41 W17 W20 W19 W59 W56 W48 W39 W7 W44 W15 W70 W5 W16 W47 W14 W40 W8 W18 W27 W4 VR4 VR1 VR2 VR3 VR5 3 6 5 2 4 1 3 6 4 2 5 1 3 6 4 2 5 1 3 6 4 2 5 1 3 6 4 2 5 4 6 1 3 6 10 6 4 3 1 5 6 4 3 1 1 1 3 4 6 6 4 3 1 17 16 2 IC1 IC4 IC6 IC5...

Page 7: ...50 10u50 C311 3 1 1 3 2 10u50 C303 10u50 C304 R304 TP121 R303 TP120 1K 1000P C302 R302 C301 1000P TP122 1K R301 TP85 15V R307 15P C305 10K TP84 10K R306 C306 R372 1K 10K TP78 R305 10K 1K 12K R308 10 9 15P TP87 8 1000P C300 R300 TP77 C337 12K TP76 R370 1K 15V 6 5 7 C313 15P R323 10K TP80 12 13 10K R324 47P C334 R310 C314 15P TP86 10K 10K C333 47P R311 0 01 TP82 14 C332 100P R326 10K 11 TP83 C316 22...

Page 8: ...17 0 01 C607 6 2K R635 12K R634 100 R603 10K R606 33K R605 10K R604 0 01 C610 30K R905 R247 0 1 680P 47P 150 R216 150 R218 R224 R208 47u25 C208 220P C264 100 C218 R264 1K 1 5K R212 1K 4700P C913 3P R220 4 3K R222 4 3K C210 10P R214 43K 150 100P C212 C214 R207 1K C263 4700P 100 220P C207 47u25 150 R223 C261 220u50 C211 100P TP43 C213 R238 R246 0 1 R234 100 R260 33 R258 1 8K B 680 R244 4 7 B R274 1K...

Page 9: ...1000P TP156 C15 R25 100K 22u25 OUTCTRL FBACK DTC IN1 IN1 4 3 2 1 5 REF IN2 IN2 13 14 15 16 12 AR AR AL AL P CON 1 2 3 4 5 GND BATT 10u 25V C1 6 7 L4 L1 L2 TP54 TP55 4 3 2 1 BR BR BL BL R271 10 1 2W C251 0 047 C250 0 047 1 2W R270 10 AL AR C451 0 047 C450 0 047 BR BL R471 10 R470 10 1 2W 1 2W TP49 TP50 TP51 TP52 TP45 TP46 TP47 TP48 TP53 TP139 TP141 TP144 1u50 C14 R16 27K 2 3 1 TP143 47K R622 47K R6...

Page 10: ... 3 2 5 6 7 6 8 9 VR5 50K C R141 8 2K C103 0 1 0 22 R129 TP256 C113 3 9 1K 2 10u50 C112 TP253 TP301 7 2 1 8 3 5 4 6 2 1 3 8 5 4 7 6 4 3K R226 47K R123 47K R124 3 6K R217 3 6K R218 C111 10u50 8 15V 15V AL AR BR 16 TP181 17 12 TP179 TP180 TP177 TP178 14 15 13 TP176 TP187 TP9 TP15 10 11 9 BL 4 TP186 TP175 6 7 5 TP6 TP5 TP7 TP4 2 3 1 ISO AL LOGO LED D GND A ISO GND 2 15V NC 15V AMP AL B ISO GND 2 AMP B...

Page 11: ... R212 2 4K TP257 1 5K R214 0 47 C203 6 5 7 4 C219 0 47 3K R221 6 8K R213 TP302 0 22 C204 47K R222 47K R237 10u50 C215 15V R247 47K R233 56K C222 0 01 TP263 C212 0 1 C214 0 22 R228 9 1K R234 56K 1 3 4 R248 47K 4 5 6 7 C218 10u50 7 6 8 9 C211 0 1 R229 2 5 C213 0 22 TP262 9 1K VR4 50K C 2 3 1 8 C217 10u50 S6 3 2 1 5 4 6 7 8 9 10 R241 8 2K C220 10u50 2 1 3 5 4 6 7 VR2 10K A 8 9 470 R243 470 R244 TP270...

Page 12: ... N82 2006 48 N89 3008 48 N09 6217 05 N83 3006 43 N89 3008 43 13 29 2 22 3 7 9 17 724 10 724 FC1 20 PA1 736 737 F1 732 704 735 739 738 731 Ex2 Jx2 Jx2 J J Hx3 Cx3 Cx3 Gx2 Gx2 Nx2 Cx2 Nx3 Cx4 Gx3 Lx6 Lx6 Lx10 Gx2 Jx3 Jx2 Jx2 Jx3 Jx3 D M G N N N N J J Jx2 J Ex2 Ex2 Ex2 27 Bundled to the transistor B A J 3 J 8 J 2 J 1 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 ...

Page 13: ...9 210 CD04AW1V2R2M ELECTRO 2 2UF 35WV C211 212 CK73GB1C104K CHIP C 0 10UF K C213 214 CK73FB1C224K CHIP C 0 22UF K C215 218 CD04BJ1H100M ELECTRO 10UF 50WV C219 CK73FB1C474K CHIP C 0 47UF K C220 CD04BJ1H100M ELECTRO 10UF 50WV C221 224 CK73GB1H103K CHIP C 0 010UF K C225 226 CC73GCH1H101J CHIP C 100PF J C227 228 CK73GB1H103K CHIP C 0 010UF K C229 CK73GB1H153K CHIP C 0 015UF K C230 CC73GCH1H151J CHIP C...

Page 14: ...H1H101J CHIP C 100PF J C133 134 CC73GCH1H470J CHIP C 47PF J C150 CD04BJ1H100M ELECTRO 10UF 50WV C156 CK73GB1H471K CHIP C 470PF K C171 CC73GCH1H271J CHIP C 270PF J C201 202 CD04BJ1H100M ELECTRO 10UF 50WV C203 204 CK73GB1H681K CHIP C 680PF K C205 206 CQ92FM1H472J MYLAR 4700PF J C207 208 CD04BJ1E470M ELECTRO 47UF 25WV C209 210 CC45FSL1H100D CERAMIC 10PF D C211 212 CC45FSL1H101J CERAMIC 100PF J C213 2...

Page 15: ...GB2A102J CHIP R 1 0K J 1 10W R171 RD14BB2C8R2J RD 8 2 J 1 6W R172 RK73GB2A102J CHIP R 1 0K J 1 10W R194 196 RK73GB2A222J CHIP R 2 2K J 1 10W R198 RD14BB2C301J RD 300 J 1 6W R201 RK73FB2B302J CHIP R 3 0K J 1 8W R203 204 RK73FB2B433J CHIP R 43K J 1 8W R205 208 RK73FB2B102J CHIP R 1 0K J 1 8W R209 210 RK73FB2B101J CHIP R 100 J 1 8W R211 212 RK73FB2B102J CHIP R 1 0K J 1 8W R213 214 RK73FB2B433J CHIP R...

Page 16: ...6 8K J 1 10W R632 RK73GB2A473J CHIP R 47K J 1 10W R633 634 RK73GB2A123J CHIP R 12K J 1 10W R635 RK73GB2A622J CHIP R 6 2K J 1 10W R636 RK73GB2A222J CHIP R 2 2K J 1 10W R637 RK73GB2A103J CHIP R 10K J 1 10W R638 641 RK73GB2A154J CHIP R 150K J 1 10W R642 RK73GB2A912J CHIP R 9 1K J 1 10W R643 RK73GB2A104J CHIP R 100K J 1 10W R644 RK73GB2A101J CHIP R 100 J 1 10W R648 RK73GB2A102J CHIP R 1 0K J 1 10W R64...

Page 17: ... TRANSISTOR Q209 210 2SA992 A F E TRANSISTOR Q211 2SC3419 Y F TRANSISTOR Q212 2SC1627A F TRANSISTOR Q213 2SC3419 Y F TRANSISTOR Q214 2SA817A F TRANSISTOR Q215 216 2SC1845 A F E TRANSISTOR Q217 218 2SA992 A F E TRANSISTOR Q219 2SC1627A F TRANSISTOR Q220 2SC4468NF TRANSISTOR Q221 2SA817A F TRANSISTOR Q222 2SA1695NF TRANSISTOR Q223 2SC4468NF TRANSISTOR Q225 2SA1695NF TRANSISTOR Q241 242 2SC4081 TRANS...

Page 18: ...l to Noise Ratio 100dB Low Pass Filter Frequency 18dB oct B channel 50 200Hz variable High Pass Filter Frequency 12dB oct 50 200Hz variable Bass Boost Circuit 90Hz B channel 6dB General Operating Voltage 14 4V 11 16V allowable Current Consumption 40A Installation Size W x H x D 380 x 61 x 286mm Weight 5 8kg KENWOOD follows a policy of continuous advancements in development For this reason specific...

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