51
KRF-V7300D/V8300D/V9300D
AY
AZ
BA
BB
BC
1
2
3
4
5
6
7
X09-7052-70 (1/3)
3.5V
3.1V
-5.5V
-5.5V
-11.7V
0.3V
0V
0.2V
-1.2V
1.2V
-1.2V
1.2V
0.2V
0V
0.3V
(X09-7052-70) (A/3)
Q302
Q301
Q1
Q2
Q303
D304
D3
D315
Q305
Q304
Q306
Q307
D310
Q308
D309
WH1
1/5
CN151
A/3-
D7
Q7
Q8
D5
Q5
D6
Q6
D4
Q101
D3
MUTE
D301
SB/L
SB/R
SL
SR
C
D322
D311
D308
D306
DC PROT
D305
D302
A/3-
CN506
1/5
MUTE
CONTROL
D312
AVR IC
PORT
D206
Q4
D2
Q206
Q202
Q204
Q212
Q208
Q210
Q214
Q216
D204
Q211
D205
Q213
Q207
Q201
Q205
Q209 Q215
D203
FR
FL
Rch
Lch
OFF-
SET
SET
OFF-
BIAS
BIAS
X08-
X08-
CN802
D307
D8
Q3
D1
D9
Q226
Q224
Q225
Q223
Q203
PACK DET
TRAIT DET
HI T
AP DET
LOW T
AP
DET
TH3
TH1
1
2
3
4
5
6
7
8
9
10
11
FL IN
L cH-GND
FR IN
R cH-GND
SBL IN
SL IN
S cH-GND
SBR IN
SR IN
C cH-GND
C IN
22u50
C47
22u50
C48
10u50
C49
10u50
C50
10u50
C51
2.2K
R33
1.1K
R101
2.2K
R34
1.1K
R1
2.2K
R5
1.1K
R2
2.2K
R6
C301 2.2u50
2.7K
R301
10K
R303
100K
10K
R302
10K
R304
10K
R305
33
R307
47K
R3
R308
1K
R309
47u50
C302
100K
R306
100K
R311
100K
R313
100K
R310
100K
R312
47K
R344
47K
R346
L4
L3
1/4
4.
R2
1/4
4.
R2
R263 47K
R261 47K
R262 47K
R260 47K
R264 47K
47K
R259
1K
R328
1u50
C304
100u10
C306
1u50
C307
47K
R330
47K
10K
R327
47K
47K
R324
10u50
C303
33K
R325
1K
R323
R321
R329
33u35
C305
R322
2K
R315
2K
R314
47u25
C309
3.6K
R347 R326
SBL
SBR
SL
SR
C
SG
SRG
CG
6dB A
TT
6dB ATT
A.MUTE
HP
F-SP A
C
SUR
1.5K
R345
33K
C308
5.6K
10u50
FA
N
LIMITER
A.MUTE
+55.5V
55.5V
8.9V
+8.9V
+12V
+12V
+11.9V
150
R220
C201
10P
10P
C202
C212 100u10
R228
430
R238
4.7K
R244
220
R250
220
R10
10u50
C52
10u50
C53
R9
1.2K
1.2K
910
R226
2.2K
C204
R204 100K
470P
R224
1K
R222
2.2K
VR2 220
C206
100u10
R214 3K
R232
R246
C220
C222
22P
22P
R208
0
C224
10P
C240
220P
R252
47
C234 100u10
C230
100P
C232
100P
47
C218
220P
910
R234
R236
120
R338 47K
R337 47K
3K
R206
39
R210
1500P
C210
C208 8P
4.7u50
C214
39P
C216
910
R230
56K 1/6W
R240
10P
C226
220P
C236
R207 3K
C209 8P
VR1 220
3K
R203
39
R205
1500P
C203
100K
R209
2.2K
R215
2.2K
R219
470P
C205
4.7u50
C211
910
R223
39P
C213
4.7K
R237
100u10
C207
56K 1/6W
R239
10P
C227
1K
R241
2.2M
R271
0
R213
220
R251
220
R243
910
R231
910
R233
220P
C217
120
R235
10P
C223
22P
C221
100P
C231
100P
C233
22P
C219
7P
C247
10
R269
7P
C248
10
R270
220P
C229
47
R245
47
R247
100u10
C235
220P
C237
150
R221
10P
C250
10P
C249
TH2
TH4
2K
R316
2K
R317
2.2K
R56
2.2K
R55
SBLG
1K
R242
2.2M
R272
R340 47K
R341 47K
R339 47K
47K
R332
47K
R334
47K
R336
47K
R335
47K
R333
560
SUR-B
F-SP B
VR2
VR1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
DET-SUR
SUR-B RLY
SUR RLY
C RLY
F-SP B.RLY
F-SP A.RLY
HP.RLY
AVR & I -PROT2
AMP DC-PROT1
VIDEO+B
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
LIMITER
FAN
R318
47K
C316 2.2u50
0
R61
2.2K
R58
1.1K
R114
1.1K
R7
R57
2.2K
C252
1500P
100u10
430
R229
C215
1500P
R217
1K
C251
R320
1K
R331
8.9V
8.9V
+8.9V
+8.9V
43V
43V
+44.2V
+44
+44.2V
1.1K
R8
R534
0
+12V
+12V
1/6W
5P
C228
C225
5P
0
R216
+
++
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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.
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.
L-7
AA-2