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Kenwood KRF-X9080D Service Manual page 19

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AY
AZ
Q Q
(X09-6760-13) (A/5)
3 7 6 3 1 5 1 5 0
R388 470
PROTECTION
8
Q356
Q32,34
Q31,33
R384
R382
10K
POWER
POWER
AMP
AMP
30K
C358
Q32
4700P
Q34
Q31
20mA
20mA
R148
220 1/4W
VR4
470
IDLE ADJ.(S Rch)
C134
1.2V
22u50
-1.2V
1.2V
+
C128
C127
560P
46.8V
560P
46.8V
Q30
R134
R133
Q26
2ND
R138
220
220
46.2V
-46.8V
330 1/4W
46.2V
1/4W
1/4W
R136
D4
D3
5.6K
R132
33.3V
R131
R135
R140 47K
220
1/4W
220
5.6K
C136
1/4W
Q28
C126 10P
1/4W
1/4W
47P
Q26
Q25
R130
C124
CURRENT
390
220u10
CURRENT
MIRROR
MIRROR
+
0V
C122 100P
R128
Q24
1.5K
D28
-46.2V
R122
R121
6.8K
0.6V
6.8K
R126
1ST
1.5K
1ST
Q22
-46.2V
C116
330P
T E
L
1 3 9 4 2 2 9 6 5 1 3
R118
47K
R434
Q334
1K
SURROUND Rch
R114
SURROUND Lch
100K
HI-TAP
ON : 61.3V
OFF : 55.3V
+15.4V
+B
+47.2V
48.3V
B
HI-TAP ON : -61.3V
OFF : -55.3V
+12V
12.2V
RED
BLUE
w w w
19
17
15
13
11
9
7
5
3
1
15 14 13
CN5
18
16
14
12
10
8
6
4
2
.
X25-B/2-
3/4
CN301
BI-5
BA
BB
+B
R387 470
R408 470
PROTECTION
PROTECTION
10
Q355
12
Q358
R383
R381
10K
Q52,54
R404
POWER
R402
10K
30K
C357
AMP
30K
C360
4700P
Q33
4700P
Q52
Q54
R147
220 1/4W
20mA
R198
220 1/4W
VR3
470
VR6
470
IDLE ADJ.(S Lch)
IDLE ADJ.(SB Lch)
C133
22u50
-1.2V
C184
22u50
+
1.2V
-1.2V
+
C178
Q29
560P
46.8V
2ND
Q50
Q25
R137
R184
Q46
-46.8V
330 1/4W
2ND
R188
220
330 1/4W
46.2V -46.8V
1/4W
33.3V
R139 47K
R190 47K
D6
R182
R186
33.3V
C135
C125 10P
C176 10P
Q27
220
5.6K
47P
C186
1/4W
1/4W
Q48
100P
R129
C123
R180
C174
Q46
390
220u10
1.6K
220u10
CURRENT
+
+
MIRROR
0V
C121 100P
0V
C172 100P
R127
R178
D30
1.5K
D29
1.5K
Q23
Q44
-46.2V
-46.2V
R172
0.6V
6.8K
0.6V
R125
R176
1.5K
1ST
1.5K
Q21
Q42
-46.2V
-46.2V
C166
C115
330P
330P
R117
R168
47K
47K
R433
R436
Q333
Q336
1K
1K
R113
R164
SURROUND
100K
100K
BACK Lch
+15.4V
+15.4V
+47.2V
48.3V
B
+12V
12.2V
80
C307
220P
R309
100
-56.0V
Q304
-30.5V
R308
2.7K
Q304
x
a o
-30V AVR
y
12
11
10
9 8
7
6
5 4
3
2
1
9 8
7
6
5
4
3
2
1
CN6
CN7
i
X14-A/11-
X14-A/11-
4/4
4/4
WH92
WH91
CG-5
CG-6
BC
BD
8
Q365
R475
7.5K
AMP.DC
C368
PROTECTION
R410
4.7u50
33K
+
Q364
R473
R474
1.5K
3.3K
R472
10K
Q363
R471
C367
1K
220u10
+
40
C370
1000P
R469
Q362
D65
7.5K
C366
4.7u50
SUPPLY
+
PROTECTION
R467
1.5K
Q361
D66
R466
Q360
100K
D68
R463 82K
C365
R465 100
220u10
R464 82K
+
R461 15K
R459 22K
R462 15K
R460 43K
R458 82K
1
R457 82K
2
R476
47.2V
560 1/4W
+12V
D69
Q359
D63
R454
MUTE
Q
Q
390 1W
DRIVER
3
7
6
3
R456
10K
Q359
-6dB ATT.
DRIVER
R609
10K
R610
10K
90
Q607
R453
C364
360
2.2u50
C362
22u50
R470 22K
R607 100K
+
C369
R414
33u16
1.2K
ON : 3.2V
OFF : -11.8V
C363
C361
22u50
22u50
ON : 3.1V
OFF : -6.2V
+
+
R413
1.2K
+B
+47.2V
48.3V
+12V
28.7V
+15.4V
12.2V
D27
2
R303
1
Q303
1
1/4W
R306
100 1/4W
C322 15P
HI-TAP
ON : 61.3V
16.0V
R318 1.5K
OFF : 55.3V
R305
16.0V
+B
220
Q307
D24
R327
47.7V
0V
330
D23
Q302
Q308
-0.6V
u 1 6 3
Q303
R328
+15V AVR
-48.8V
100
HI-TAP
ON : -61.3V
HI-TAP
.
OFF : -55.3V
ON : -61.3V
Q306
R322
OFF : -55.3V
B
1 1/4W
R317 1.2K
C321 10P
B
B
31
BE
BF
KRF-X9080D/VR-8070/8060
2
4
9
9
8
R100 33 1/4W
L2 512nH
R331
1.8K 2W
K2
Q309
R335
RLY
47K
DRIVER
(FL/FR)
L1
13
512nH
R99
33 1/4W
R199
33 1/4W
L5
512nH
R332
2
1.8K 2W
1
K3
Q310
4
R337
3
47K
RLY
2
DRIVER
1
(C/SW)
14
L6
512nH
R200
33 1/4W
R150
33 1/4W
L4
512nH
R333
K4
1.8K 2W
Q311
R339
47K
RLY
DRIVER
1
5
1
5
0
8
9
2
4
(SL/SR)
11
L3
512nH
R149
K5
33 1/4W
Q312
R341
47K
SP.B
RLY
DRIVER
12
1
+12V
2
3
12.2V
4
+B
+B
3 V.REG.
2
+B
R301
1.8K 2W
C453
1000P
K1
1
R321
1 1/4W
D11
Q305
5
1
B
4
+B
m
D12
3
R319
R323
Q301
2.2
4.7K
2
c o
ON : 4.5V
C303
1
OFF : 0V
0.01
B
Q305-308
TAP RLY
LIMITER
CONT.
BG
BH
2
CAUTION: For continued safety,
9
9
J5
replace safety critical compo-
nents only with manufacturer's
Lch
recommended parts (refer to
parts list).
indicates safety
SPEAKERS
critical components. For contin-
FRONT A
ued protection against risk of
fire, replace only with same type
Rch
and rating fuse(s). To reduce the
risk of electric shock, leakage-
current or resistance measure-
Cch
CENTER
ments shall be carried out
(exposed parts are acceptably
insulated from the supply circuit)
before the appliance is returned
to the customer.
X25-B/2-
WH4
CN304
SL GND
3/4
BK-4
SW GND
The DC voltage is an actual
reading measured with a high
WH1
X25-B/2-
impedance type voltmeter with
CN302
SL ch
no signal input. The measure-
SW ch
3/4
BL-4
ment value may vary depending
SR ch
GND
on the measuring instruments
used or on the product.
J6
Lch
SPEAKERS
FRONT B
Rch
9
8
2
9
9
CN2
X14-D/11-
WH42
GND
+12V
4/4
CD-6
GND
-12V
X13-B/6-
WH3
CN201
GND
3/4
BY-4
UNREG.
CN1
VH
VL
to POWER
TRANSFORMER
GND
4/4
CT-4
VL
VH
VR-8060-S (2/4)
32
X09-6760-13(A/5) (2/2)

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