Kenwood KRF-V7771D Service Manual page 28
Audio video surround receiver
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Also See for KRF-V7771D:
- Instruction manual (77 pages) ,
- Service manual (62 pages) ,
- Setup (12 pages)
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CM
CN
(X11-3822-70) (A/7)
+17V
17V
STAND BY:0V
POWER ON:-16.5V
IC51
Lch
C131
(1/2)
2.2u50
4
C135
R109
3
1
22U50
2.2K
2.2u50
+
2
+
R401 100
Q1
-20dB
ATT
Q2
R128
8.2K
R402 100
C136
C104
6
C132
22u50
R110
2.2u50
7
2.2u50
5
+
2.2K
+
IC51
8
(2/2)
Rch
+17V
+17V
STAND BY:0V
STAND BY:0V
POWER ON:-16.5V
POWER ON:16.3V
17V
SLch
IC52
C137
(1/2)
2.2u50
3
4
C141
R159
22u50
2.2K
2.2u50
1
+
2
+
R405 100
-16.4V
Q5
-20dB
ATT
16.4V
Q6
R406 100
IC23
E-VOL.
6
C142
C154
C138
22u50
R160
2.2u50
7
2.2u50
5
+
2.2K
+
IC52
8
(2/2)
SRch
+17V
+17V
STAND BY:0V
STAND BY:0V
POWER ON:16.3V
POWER ON:-16.5V
17V
IC53
Cch
C143
(1/2)
2.2u50
4
C147
R209
3
1
22u50
2.2K
2.2u50
+
2
+
R409 100
-16.4V
Q9
-20dB
ATT
16.4V
Q10
IC25
R410 10K
E-VOL.
C148
C204
6
C144
7
22u50
R210
2.2u50
2.2u50
5
+
2.2K
+
IC53
8
(2/2)
SWch
+17V
+17V
STAND BY:0V
3
POWER ON:16.3V
4
1
2
CO
CP
CN4
1
2
3
4
5
6
7
+17V
17V
17V
STAND BY:0V
POWER ON:-16.5V
R115
2.2K
IC22
C103
(1/2)
3
4
C111
4.7u100
R135 2.2K
1
+
2
+
R105 13K
ON:0.7V
ON:0.7V
OFF:-15.8V
OFF:-15.8V
C109
R131
R113
R117
22P
100
4.7K
1K
Q3
AMP
MUTE
C110
R132
R114
Q4
R118
22P
100
4.7K
1K
ON:0.7V
ON:0.7V
R106 13K
OFF:-15.8V
OFF:-15.8V
6
C112
R116
4.7u100
2.2K
7
5
+
R136 2.2K
+
8
IC22
STAND BY:0V
(2/2)
POWER ON:16.3V
+17V
17V
17V
R165
STAND BY:0V
2.2K
IC24
POWER ON:-16.5V
C153
(1/2)
4
C159
3
1
4.7u50
R137 2.2K
+
2
+
R155 13K
ON:0.7V
OFF:-15.8V
C157
R177
R163
22P
100
R167
4.7K
1K
Q7
AMP
MUTE
C158
R178
R164
Q8
R168
22P
100
4.7K
1K
ON:0.7V
R156 13K
OFF:-15.8V
C160
R166
6
7
4.7u50
2.2K
5
+
R138 2.2K
+
8
IC24
(2/2)
STAND BY:0V
POWER ON:16.3V
+17V
17V
17V
R215
STAND BY:0V
POWER ON:-16.5V
2.2K
IC26
C203
(1/2)
3
4
C209
4.7u50
R139 2.2K
1
+
2
+
R205 13K
ON:0.7V
ON:0.7V
OFF:-15.8V
OFF:-15.8V
C207
R227
R213
22P
100
R217
4.7K
1K
Q11
AMP
MUTE
C208 R228
R214
R218
Q12
22P
100
4.7K
1K
ON:0.7V
R206 18K
ON:0.7V
OFF:-15.8V
OFF:-15.8V
6
C210
R216
4.7u50
2.2K
7
5
+
+
8
IC26
STAND BY:0V
(2/2)
POWER ON:16.3V
+17V
D14
CQ
CR
P
IC1,2
: TC9164AF
Q1-12,31-36,43-48
IC3,22,24,26,29-31,51-53
Q15,19,23
: NJM4565D
IC21
: TC9412AP
Q16,20,22,24
IC23,25
: TC9413P
IC42
: TC9163AF
Q21
IC47-49
: NJM4565L
8
9
10
11
12 13 14
15
16 17 18
STAND
BY:0V
STAND BY:0V
POWER
POWER ON:-16.5V
ON:16.3V
17V
IC29
C355
(1/2)
10u50
4
C359
R327
3
10u50
270
1
+
2
+
Q43
R365 3.3K
R391
C357
100
22P
C354
BUFFER
150P
R392
C358
100
22P
R366 3.3K
C360
R328
6
C356
10u50
270
7
10u50
5
+
+
8
IC29
C353
(2/2)
0.01
+17V
16.3V
-16.5V
17V
IC30
C363
(1/2)
10u50
3
4
C367
R329
10u50
270
1
+
2
+
Q45
R375 3.3K
R393
C365
100
22P
C362
BUFFER
150P
R394 C366
100
22P
R376 3.3K
6
C368
R330
C364
10u50
270
7
10u50
5
+
+
8
IC30
C361
(2/2)
0.01
+17V
16.3V
-16.5V
C371
0.01
17V
IC31
C373
(1/2)
10u50
4
C377
R331
3
1
10u50
270
+
2
+
Q47
R385 3.3K
R395
C375
100
22P
BUFFER
Q48
R386
100
C378
R332
6
C374
7
10u50
270
10u50
5
+
+
8
IC31
(2/2)
16.3V
+17V
CS
CT
: 2SC4213(B)
D2
: DA204U or
: UN5119 or
1SS302
X25-A/7
-CN23
DTA113ZUA
D13
:
MA111
:
2SC4081(R,S) or
D14
:
RD11ES(B) or
5/6
2SC4116(Y,GR)
HZS11N(B)
:
2SA1576A(R,S) or
2SA1586(Y,GR)
O
X25-A/7
-CN24
5/6
P
J6
R367
C29
220
100u10
2 Lch
+
R333
1K
Q31
R369
1K
C30
100u10
1 Rch
ON:0.7V
+
OFF:-15.8V
Q44
R334 1K
Q32
R370
1K
R368
220
6ch
PRE OUT
R377
C38
220
100u10
4 SLch
+
R335
1K
R379
1K
C37
100u10
3 SRch
ON:0.7V
+
Q33
OFF:-15.8V
C39
A MUTE
100u10
Q46
5 Cch
+
R336 1K
Q34
R380
1K
C40
100u10
R378
6 SWch
220
+
UPC7905AHF
R387
220
R337
1K
GND
R389
1K
ON:0.7V
Q35
OFF:-15.8V
X25-A/7
-CN21
SW MUTE
5/6
R338 1K
R390 1K
Q36
Q
R388
220
KRF-V7771D/V7771DE
Y05-3862-70
CU
CV
CAUTION: For continued safety, replace safety
critical components only with manufacturer's rec-
ommended parts (refer to parts list).
indicates
safety critical components. For continued protec-
tion against risk of fire, replace only with same
type and rating fuse(s). To reduce the risk of elec-
tric shock, leakage-current or resistance measure-
ments shall be carried out (exposed parts are
acceptably insulated from the supply circuit)
before the appliance is returned to the customer.
The DC voltage is an actual reading measured
with a high impedance type voltmeter with no sig-
nal input. The measurement value may vary
depending on the measuring instruments used or
on the product.
DAN202U
UPC7805AHF
DAP202U
UN5212
DA204K
DA204U
SI-3082V
TC9162AF
TC9163AF
TC9164AF
TC9412AP
LC72131
TA7805S
TA79005S
OUTPUT
INPUT
DSPB56007FJ88
KRF-V7771D(E,T) (4/6)
KRF-V7771DE(E2) (4/6)
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