Service Manuals, User Guides, Schematic Diagrams or docs for : Kenwood Power Amplifier Car Power Amplifier Car Kenwood KAC-PS521 & KAC-X521 B53-0139-00-SD
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A B C D E
KAC-PS521/X521
Q50,68,70,71,97,101,102,143,144,148, : 2SC4081 D1,303,306-308,311,313,314,319 : STZ6.8N IC1,9,10 : BA4560F
1 149,301,304,341-344,357 D2,81,302,315 : LM1MA142WK-G IC2 : UPC494GS
Q51,52 : 2SC4097 D3,103,301 : LM1MA142WA-G IC3 : P82B96PN
Q53,54 : 2SA1577 D51,52 : RM4ZLF-J1NF IC5 : BA10393F
Q55-60 : 2SK3662-F D54 : S5566B-Q IC6 : 784224YGC117 SIGNAL LINE
Q61 : 2SD2012-F D55 : UDZS4.7B IC7 : PST3436UL-E
GND LINE
Q62 : 2SB1375-F D60 : RD16JS(B) IC8 : BR24C01AF-W
Q63,69,111,112,142,145,302,303,305,306 : 2SA1576A D68 : FCH10A20 B LINE
Q64 : 2SB1241 D69 : FRH10A20 B LINE
Q65,307,313,346,348,352,353,355 : DTC114EUA D70 : UDZS6.8B
Q66 : 2SB1238 D71 : RD15JS(B)
15.0V
Q81 : 2SK246(BL)-F D105,106,108 : RD5.1JS(B2) D2 IC1
Q91,92,314,347,349,351,354 : DTA114EUA D107,109-118,127-130 : 1SS133 R21 (1/2)
Q103-110,123,124,147 : 2SA992(F,E) D131-133,304,305,318,341-344 : 1SS355 1K 3 8
Q113-116 : 2SC3478A(L,K) D309,317 : DA204U 1 R11
15P
C5
Q117,118 : 2SA1376A(L,K) D310,351,354 : UDZS5.1B 2
C11
10K
Q119,120 : 2SC3419(Y) D312 : UDZS16B
Q121,122 : 2SC1845(F,E) D352 : UDZS10B
R15
R9 10K
10K
Q125-128 : 2SC2235-F D353 : UDZS3.3B
Q129-132 : 2SA965-F
10K
R7
J1 R1 C3
Q133-136 : 2SC3856NF R13 10K
2 Q137-140 : 2SA1492NF Lch B2T
7 1K 10u35 R5
+ 1K C19 1000P
470P
Q141 : DTA124EUA
10K
C1
R3
Q146 : 2SC1845(F,E) 6 R23 1K
Q356,358 : 2SC3902 INPUT BS
470P
R14 10K
10K
C2
R4
Q403,404 : 2SC945(A)(Q,P)
5
10K
R8
Rch B1T
(X09-5760-10) (A/2) R2 C4 R6 R10 10K
R16
10K
4
1K 10u35 1K
IC1
3 +
Lch A2T (2/2)
C12
6
IC5 D1 7 R12
15P
R321
C6
H/U 2 R22 5
1K 0V 5 4 0V OUTPUT AS 10K
IN2+ VEE COMMUNICATION 1K 4
R322 2.0V 6 3 0V 1
1K IN2- IN1+ Rch A1T -15.0V
C21
R329 D3
0.1
0V 7 2 0V 4.7K
OUT2 IN1-
C314 100P
R326 1M
C313 100P
5.0V 8 1 0V
R325 1M
VCC OUT1 13
ISO
3 C307 0.01
R323 R324 R328
4.7K
3.9K 2.7K
D308 11
J3
62
63
R341 4.7K
4 3 2 1 R342
R319 Q341 R318 Q342
8 7 6 5 100K D341 15K D342 4.7K
D306 D313
12 11 10 9
R336
R337
100K
10K
13
60
14
4 R344
R320 Q343 R345 Q344
R121
D343 47K D344
R123
10u35
15K 47K
R117
C109
MAIN AMP
D111 220
220
2.4K
+
D307 D314 C99
C343
0.01
22P
Q1
R338
R339
10K
10K
Q111
C123
R241 22P
R115
2.7K
R127
6.8K
R307 5.1K Q107 R131
10K
Q314 Q109
10K
D304 R312
R310
1.5K
33K
12K
C306
R327
0.01
10K D105
10
C107
1u50
+
1000P
C121
C303 Q301
R125
6.8K
D319 0.1 Q305
R334 R308
R113
C111 R119
C97 1.5K
R95
47K
47u25 1K
47 47 Q307 Q103 Q105
R97 1K
10K
220P
6 +
R347
100K
10K C115
Q303
MUTE 330P
R316
R314
1.5K
5
20K
R111 C105
R101 C101 100 4700P
D318 4.7K 22u25
+ Q113
Q
R315
D305 R317
1.5K
12K
R109
R129
R107
R105 33K
150
1K
1K
C103
470P
Q304 Q101 D109
R99 4.7K
R335 R309 Q306
100u63
C137
47 47
Q313
+
Q302 10K
12 D110
R311
R100 4.7K
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