Kenwood KAC-8401 Service Manual page 7
Kenwood kac-8401 power amplifier service manual
Hide thumbs
Also See for KAC-8401:
- Instruction manual (13 pages) ,
- Instruction manual (37 pages) ,
- Instruction manual (14 pages)
Advertisement
K
KAC-8401
R46
C5
10K
10u16
+
R14 4.7K
R45
56
2.4V
1
R17 10K
5.0V
2
0V
3
R15 680
0.46V
4
3.3V
C6 1000P
5
0V
R16 16K
3.8V
6
7
14.2V
C28
47u16
8
+
D12
R49
Q24
22K
DC/DC
D16
31.0V
L3
D17
-31.0V
R84
22
10V
D43
0V
D32
Q23
R71 47K
R72 47K
10V
Q20
R73 47K
Q22
R74 47K
0V
Q21
R191
C191
10 1/2W
0.047
R291
C291
10 1/2W
0.047
R192
C192
10 1/2W
0.047
R292
C292
10 1/2W
0.047
8
X09-5610-10 (3/3)
L
14.3V
28.5V
Q7
IC8
0V
16
R12
5.0V
6.8K
15
5.0V
14
13
5.0V
D8
12
14.2V
Q8
11
14.2V
10
9
Q5
12V
0V
R35
Q15
Q13
150
R33
43
C10
2200u16
+
C45
2200u16
+
R34
43
R36
150
Q16
Q14
(X09- ) (B/2)
WH1
CN1
CN2
FAN
3
3
2
1
LED
3.1V
2
2
D13
GND
1
1
C51
0.01
IC1-5,7
: NJM2058M
IC6
: NJM4565M
IC8
: UPC494GS
D1,9
: RM4ZLF-J1
J3
D2
: HZM7.5N(B2)
D3,18,19 : HZM16N(B2)
14.4V
D4,21,23-26,29,33-35,
38,102,202
BATT
: MA142WA
D5,10-12,14,15,39-42
11
: 1SS133
GND
D6
: HZM5.1N(B2)
10
P CON
D7
: RD10JS(B)
9
D8,22,27,28,31,32,101,
AL+
201
: MA142WK
D13
: B30-1669-05
D16
: FML22S
D17
: FML22R
BL+
8 7
D43
: HZM10N(B1)
AL-
D100,200
BL-
: MA3068WA
6
5
AR-
BR-
4
3
AR+
BR+
2
1
CAUTION : For continued safety, replace safety critical components only with manufacturer's
recommended parts (refer to parts list).
KAC-8401
Indicates safety critical components. To reduce the risk of electric shock, leakage-current
or resistance measurements shall be carried out (exposed parts are acceptably insulated
from the supply circuit) before the appliance is returned to the customer.
• DC voltages are as measured with a high impedance voltmeter. Values may vary slightly
due to variations between individual instruments or/and units.
M
Q3
-5.0V
R28 10K
D4
Q4
R11
0.3V
33K
Q1
D6
D3
R50
10V
10K
Q2
R25
R24
D2
680
680
14.3V
Q9
Q11
D14
D15
Q12
Q10
FAN
SIGNAL LINE
GND LINE
B LINE
POWER
B LINE
LED
Q1,2,7,8,20-22,24
: 2SD1819A
Q3
: 2SA1534A(R,S)
Q4,23
: 2SB1218A
Q5
: 2SC3940A(R,S)
Q6,9,10,25,26,31,32
: 2SC945(A) (Q,P)
Q11,12,101-104,
201-204
: 2SA733(A) (Q,P)
Q13-16 : FKV550T
Q17
: 2SD2375
Q18
: 2SB1548(P)
Q27,30,33,36,105-108,
205-208
: 2SC1845(F,E)
Q28,29,34,35
: 2SA992(F,E)
Q109,110,209,210
: 2SC4137(V,W)
Q111,112,211,212
: 2SC1627A
Q113,114,213,214
: 2SA817A
Q115,116,215,216
: 2SC4468
Q117,118,217,218
: 2SA1695
N
O
2SA1534A
2SC1627A
2SA733(A)
2SC1845
2SA817A
2SC3940A
2SA992
2SC945(A)
B
C
E
2SA1695
B
2SB1218A
2SD1819A
2SC4137
B
E C
2SB1548
NJM4565M
MA142WA
MA142W
UPC494GS
NJM2058M
1
2
E
C
3
4
5
6
7
Advertisement
