Kenwood KAC-8404 Service Manual page 11

P
INPUT
VR2
SENSITIVITY
103A
TP121
R122 390
TP117
9
R123 390
TP122
C116
0.01
IC4
(1/2)
3 8
1
0
2
4 R121
15K
C118
TP120
1
47P
C117
3
0.01
5
15V 7
+15V
INVERTER
VR4
INPUT
103A
SENSITIVITY
TP233 TP231
R242
R239 390
100
TP235
R243 390
6
TP236
HPF/OFF/LPF
IC4
(2/2)
5
7
R240
6
R241
15K
15K
TP232
C228
TP234
47P
INVERTER
CAUTION : For continued safety, re place safe ty critical com po nents only with manufac-
turer's rec om mend ed parts (refer to parts list).
Indicates safety critical com po nents. To reduce the risk of electric shock, leakage-cur rent
or re sis tance mea sure ments shall be carried out (ex posed parts are ac cept ably in su lat ed
from the supply cir cuit) be fore the ap pli ance is returned to the customer.
• DC voltages are as measured with a high impedance volt me ter. Val ues may vary slight ly
due to vari a tions between in di vid u al in stru ments or/and units.
Q
(X08- ) (B/2)
CN2 CN22
TP737
AL AL 8
TP738
2 AR AR 7
TP739
GND GND 6
4 BL BL 5
BR BR 4
6 NC NC 3
-15V -15V 2
8 +15V +15V 1
R S
15V
+15V
R338
3K
Q303
R341 R301
10K 10K R305
Q315
Q301
10K
TP301 TP305
ATT MUTE
TP306
R342 R302
Q316 Q302
10K 10K R306
10K
Q304
R339
3K
ATT MUTE
+15V
R437
3K
Q403
R441 R401
10K 10K R405
Q415 Q401
10K
TP401 TP405
ATT MUTE
TP406
R442 R402
Q416 Q402
10K 10K R406
10K
Q404
R438
3K
ATT MUTE
+15V
T
KAC-8404
15V
+15V
TP315
C305
47P
C901 C903
C301
220P 220P
Q305 Q307
10u50
+
R315 C307
100 4700P
TP313
TP314
R316 C308
100 4700P
C302
Q306 Q308
10u50
+
C902 C904
220P 220P
C306
47P
TP316
TP415
C405
47P
C905 C907
C401
220P 220P
Q405 Q407
10u50
+
R415 C407
100 4700P
TP413
TP409
TP414
R416 C408
100 4700P
C402
Q406 Q408
10u50
TP412
+
C906 C908
220P 220P
C406
47P
TP416
DIFFERENCE
AMP
11
X08-4430-10 (2/3)
C311
6P
R321
47K
C3
3
Q309
D303
D304
Q310
C3
3
R322
47K
C312
6P
C411
6P
R421
47K
C4
3
Q409
D403
D404
Q410
C4
3
R422
47K
C412
6P