Kenwood KAC-649S Service Manual page 6

K
IC1,2 : NJM2060M
IC3,4 : NJM4565MD
IC5 : UPC494GS
Q1-4,13-17,58-61 : 2SC945(A)(Q,P)
Q5-12,47,49,56,57 : 2SA733(A)(Q,P)
Q18-21 : 2SC4137(V,W)
Q22,25,26,29,46,48,52,
53 : 2SC2412K
Q23,24,27,28 : 2SA1037K
Q30,33,34,37,54 : 2SC1627A
Q31,32,35,36,55 : 2SA817A
Q38,41,42,45 : 2SC4511∗B
Q39,40,43,44 : 2SA1725∗B
Q50,51 : FKV550T∗B
+B
Q47
+B
POWER
SWITCH
R533 R211
D33
33K 4.7K
D35
Q46
MUTE
D29
ON/OFF
P. CON.
DETECTION
OVER-VOLTAGE
Q53 PROTECTION R240
3.3K
B
C102 R227
0.047 10
C103 R228
0.047 10
C104 R229
0.047 10
C105 R230
0.047 10
L1
D31 Q50,51
SWITCHING
+B
POWER
STAGE
D32
B
L
D1-8,10,12,15-28,30,
33,35,36,38-40,43,44,
49-58,60 : 1SS133
D9,11,42 : RD16JS(B)
D13,14 : RD8. 2JS(B)
D29 : RD7. 5JS(B)
D31 : FMU22S∗A
D32 : FMU22R∗A
D34 : B30-1460-05
D37 : RD10JS(B)
D41 : 1N5406-M
D45-48 : RD5. 1JS(B)
+B
SWITCHING
REGULATOR
IC5
MUTE
DRIVER
Q49
R208
47K
Q48
D42
OVER-CURRENT
PROTECTION
B
D38
R231
Q50
10
D43
R224
150
Q56
+B
Q57
Q51
D44
R225
150
Q56,57
D39
R232
SWITCHING
10
DRIVER
+B
M N
SIGNAL LINE
GND LINE
B LINE
+B
B B LINE
+B
0V
REFERENCE
REGULATOR
ERROR
AMP
OSCILLATOR
14.3V
R239
6.8K
C111
R223 10u16
+
10K
R218
Q52
22K
+B
L+(A)
L+(B)
L-(A)
L-(B)
R-(A)
R-(B)
R+(A)
R+(B)
P-CON
GND
BATT
+B
+B
W403
L2
+B
KAC-649S (EKM)
KAC-649S
O
2SA733(A) 2SC945(A)
2SA817A
2SC1627A
2SC2412K
2SC4137
2SA1725
✽
2SC4511 ✽
2SA1037K
SP OUT
J1
NJM4565MD
UPC494GS
E1
NJM2060M
B
B