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AY
1
2
WH1
FL IN
L cH-GND
FR IN
R cH-GND
X08-
SBL IN
A/3-
CN151
AA-2
1/5
SL IN
S cH-GND
SBR IN
SR IN
3
C cH-GND
C IN
4
CN802
DET-SUR
SUR-B RLY
SUR RLY
C RLY
5
F-SP B.RLY
F-SP A.RLY
HP.RLY
X08-
A/3-
AVR & I -PROT2
CN506
AMP DC-PROT1
L-7
VIDEO+B
1/5
TAP CONT
A.MUTE
TH-DET-HI TAP
6dB ATT
TH-DET-L,RcH AMP
FAN LEVEL DET.
TH-DET-PACK
LIMITER
TH-DET-LOW TAP
6
CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts list).
indicates safety critical components. For continued protection against risk of fi re, replace only with same type and rating fuse(s).
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.
7
The DC voltage is an actual reading measured with a high impedance type voltmeter with no signal input. The measurement value
may vary depending on the measuring instruments used or on the product.
AZ
(X09-7052-70) (A/3)
R9
1.2K
R57
Q3
D1
2.2K
D9
Q1
FL
R10
1.2K
R58
Q4
D2
2.2K
Q2
D8
FR
MUTE
C47
22u50
1
+
Q7
2
D7
C48
R2
22u50
1.1K
3
+
4
C53
R55
Q8
10u50
2.2K
D5
5
+
C49
R33
10u50
2.2K
6
+
Q5
7
D6
C52
R56
10u50
2.2K
8
+
C50
R34
10u50
2.2K
Q6
9
D4
+
10
C51
R101
R114
10u50
1.1K
1.1K
11
+
Q101
D3
-11.7V
3.1V
Q301
R302
MUTE
R303
10K
10K
CONTROL
Q302
R301
R307
2.7K
R304
33
10K
A.MUTE
+12V
D302
C309
47u25
+
R347 R326
1
3.6K
560
Q306
2
SUR-B
3
SUR
4
C
Q305
5
F-SP B
6
F-SP A
R324
7
HP
47K
3.5V
8
9
Q303
10
+11.9V
11
Q304
12
A.MUTE
13
14
6dB ATT
15
16
FAN
17
18
LIMITER
19
BA
KRF-V7300D/V8300D/V9300D
Rch
Q202
R224
Q224
1K
SBL
-5.5V
SB/L
SBLG
SBR
R270
C248
10
7P
SB/R
Lch
SL
SL
Q201
SG
SR
SR
R269
C247
10
7P
SRG
R217
C
Q223
R220
C202
C201
150
10P
10P
C
-5.5V
CG
Q225
R221
C250
C249
150
10P
10P
R309
1K
+55.5V
Q308
R310
R312
100K
Q307
100K
DC PROT
AVR IC
PORT
D307
R323
1K
+12V
BB
D204
C218
R214 3K
VR2
220P
R210
C210
OFF-
39
1500P
SET
C208 8P
Q208
0.3V
C222
C206
Q204
22P
100u10
+
C220
VR2 220
0V
22P
R222
R226
C228
2.2K
2.2K
5P
0.2V
Q212
Q206
R240
56K 1/6W
C252
C214
R242
4.7u50
C226
1K
1500P
+
10P
R272
Q226
2.2M
D203
R207 3K
C217
VR1
220P
R205
C203
OFF-
39
1500P
SET
C209 8P
Q207
0.3V
C221
C207
22P
Q205
100u10
+
C219
VR1 220
0V
22P
R215
R219
C225
2.2K
2.2K
5P
Q211
0.2V
R239
56K 1/6W
1K
C251
C211
Q203
4.7u50
C227
R241
1500P
+
10P
1K
R271
2.2M
55.5V
+8.9V
8.9V
D311
R346
47K
D322
R344
47K
D312
R345
R335
R341 47K
D309
47K
33K
R332
R338 47K
47K
R336
R340 47K
D310
47K
R334
R337 47K
47K
R339 47K
D308
R333
1/6W
47K
LIMITER
X09-7052-70 (1/3)
BC
C236
220P
R246
Q210
Q216
47
BIAS
1.2V
R252
Q214
47
C240
220P
R244
220
-1.2V
C229
220P
R247
Q209 Q215
47
BIAS
1.2V
R245
Q213
47
C237
220P
R243
220
-1.2V
+44
R2
4.
1/4
L3
D3
D315
R2
4.
1/4
L4
+12V
51
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