Kenwood KRF-V7772D, Service Manual

Page: 22 / 40

AY AZ BB BD BF BH BA BC BE BG
2
1
3
5
7
4
6
Rch 2
Lch 1
PHONO
CD1
Rch 4
Lch 3
REC
Rch 2
Lch 1
PLAY
Rch 4
Lch 3
J1
J2
Lch 3
PLAY IN
Rch 4
REC OUT
Rch 2
Lch 1
VIDEO1
J3
Rch 4
Lch 1
Rch 2
Lch 3
Rch 6
Lch 5
IC1
(1/2)
(2/2)
INPUT
PHNO EQ AMP
SELECTOR
REC OUT
INPUT
SELECTOR
Q11
Q21
Q23
1ST
Q12
Q22
Q24
D51
D52
D53
Q25 Q27
Q29
D55 D59
D57
Q31
Q33
Q101
Q103
CN21
IDLE FLch
D58
Q32
IDLE FRch
Q104
Q34
CN22
Q102
D56 D60
D94
Q71
IDLE Cch
Q110
Q73
CN25
Q109
D93 D95
Q26
Q28
D54
Q30
D91
Q15
Q65
Q67
Q61
Q63
D92
Q69
D90
Q80
Q79
FINAL TR.
CURRENT
IC3
(2/2)
BUFFER
IC3
(1/2)
LIMIT
MD/TAPE
J11
J12
J13
J14
1
2
3
4
5
6
7
8
2
1
3
6
5
4
7
8
CD2/TAPE2
MONITOR
PLAY IN
Rch 4
Lch 3
REC OUT
Rch 2
Lch 1
VIDEO 2
PLAY IN
VIDEO 3
PLAY IN
VIDEO 4
PLAY IN
IC1
REC AMP.
(2/2)
IC2
(1/2)
IC2
2ND
MUTE
FLch
D61
D62
FRch
D96
1ST
2ND
2ND
1ST
Cch
Q13
LSch
1ST
Q43
Q41
D71
2ND
Q47
Q45
D73
Q49
IDLE LSch
D81
Q107 D77
Q53
D79
CN23
Q105
Q51
D75
Q44
1ST
Q14
RSch
Q42
Q48
D72
Q46
Q50
2ND
IDLE RSch
D74
Q106
Q108 D78
Q54
CN24
Q52
D80 D76
D82
CN4
E2
CN3 CN8 CN6
D37 D36 D35
C
B
E
PHNO EQ AMP
WH2
FAST OFF
T.
P
.1
T.
P
.2
T.
P
.5
T.
P
.3
T.
P
.4
IDLE T.P.1-5
13.2mV(30mA)
AUDIO
D38
-CN5
X08-A/10
2/4
2/4
-CN10
X08-A/10
2/4
-CN3
X08-I/10
1/4
CN1
X05-
X08-A/10
-CN4
2/4
R42
220K
1K
R22
1K
R21
R41
220K
C23
C24
470K
R43
R44
470K
R23
1K
1K
R24
220K
R45
220K
R46 R26
1K
R25
1K
1K
R50 R30
220K
R49
1K
220K
470K
R48
R29
R28
1K
470K
R47
R27
1K
220K
1K
R53
1K
220K
R54 R34
R33
1K
R52 R32
470K
R51
1K
470K
R31
C27
C28
220P
220P
C32
C31
220K
R57
220K
R58
R38
1K
R37
1K
1K
R56
R36 220K
R55
1K
220K
R35
100u10
C7
+
360
R9
10u50
C4
+
39P
C1
R5 30K
220P
10u50
C3
+
R3
2.2K
R7
100
R11
270K
R13
22K
C11
0.012
C13
3300P
4.7u35
C16
+
47K R15
4.7u35
C15+ R17
1K
C5
270K
R12
22K
R14
3300P 0.012
C12
C14
360 R10
100u10
C8
+
39P C2
220P
R6 30K
C6
47K R16
2.2K
R4 R8
100
1K
R18
TUNER PHONO DIGIT
AL
T
APE1 CD1
T
APE2
MONIT
OR
COMMON
VSS ST GND
28
VDD
D
ATA
CK
1
27
2
26
3
25
4
24
5
23
6
22
7
21
8
20
9
19
10
18
11
17
12
16
13
15
14
C65
330P
14 13 12 11 10
8 7 5 4 3 2
15 16 17 18 19 20 21 22 23 24 25 26 27 28
VIDEO1 A
V
AUX
VIDEO1
REC REC
1
VSS
6
VDD
VIDEO3 VIDEO2
9
ST GND
D
ATA
CK
T
APE1
T
APE2
VIDEO4
R101
47K
1K
R96
R103
2.2K 22u35
C101
+
R105
100
1K
R1
13
150P C103
1K
R1
15
C1
1
1
220P
10K
R109
C121
47K
47u25
C1
13
+
18P
R102
47K
R97
1K
R104
2.2K
C1
14
47u25
C104 150P
C1
12 220P
R1
18
+
R106 C102
+
22u35
R1
14
100
R1
16
1K 1K
47K 18P
C122
100P C108
10K
R110
C106 100P
C105 100P 100P C107
R129
R130
R119 220
1/4W
R123
R125
C1
15 0.01
220 1/4W
R121
C117
150P
47P
C1
19
120
R127 1/4W
10u50
C123
+
1
2
150
R137
VR1 220
R145
750
C125
0.01
3.3K
R143
750
R139
100 1/4W
R147
3.3K R141
R149
100 1/4W
R151
10K
47K
R153
R133
47 1/4W
R135
47 1/4W
1/4W
1/4W
R150
100 1/4W
1/4W
47 1/4W
150
R138
R136
47 1/4W
VR2 220
R140
1/4W
3.3K
R142
750
2
1
C126
0.01
750
R146
R134
100 1/4W
R148
R144
3.3K
R154
47K
10K
R152
R349
100 1/4W
1/4W
47 1/4W
150
R337
R335
47 1/4W
VR3 220
R339
1/4W
3.3K R341
750
2
1
C325
0.01
750
R345
R333
100 1/4W
R347
R343
3.3K
R353
47K
1/4W R128
150P
C118
R122
220 1/4W
C1
16 0.01
R124
C120
120
C124 10u50
R126
47P
+
R120 220
1/4W
R327
1/4W
150P
C317
R321
220 1/4W
R301
47K
R100
1K
R303
2.2K
C315 0.01
C323 10u50 R325
C303 150P
220P
R305 C301
+
22u35
R313
100
R315
1K 1K
18P
R329 47K C321
120
C319
100P C305 C307 100P
R323
+
R309
10K
R319 220 1/4W
47P
47u25
C351
+
10K
R362
100
R363
22 1/4W
R361
47K
R360
22u35 C350
+
1000P
C352
C353 47u25
+
Q101-110
51-54,71,73
470K
R65
470P
C51 R61
470K
R66
470K 470K
R62
+
C50
3.3u50
C52
470P
C54
100P
C53
100P
+
C49
3.3u50
C31
1
Q31-34,
1
2
3
4
5
4
5
1
2
3
5
4
2
1
4
2
1
5
3
3
1
2
4
5
3
2
5
1
3
4
220P
220P
220P
220P
C66
330P
4.7K
R75
10K R77 10K R76
L
R
R
L
1K
R39
1K
R40
220K
R59
220K
R60
220K
R2
220K
R1
220P
C10
220P
C9
5
6
8
7
C17
100P
100P
C18
2
3
4
1
5
6
8
7
2
3
4
1
100
R73
100
R74
470
R84
R83
470
100P
C45
+
C42
470
R82
C46
470K R64
C44
220P
2
4
3
1
R72
100P 100
+
470K
R63 C43
220P
470
C41 R81
R71
100
5
6
8
7
3.3u50
3.3u50
47u25
+
C55
47u25
C56
+
100P
C59
100P
C60
REC
REC
27 25
24
22 21
27 26 25
47u25
+
100P
C58
C48
100P
C57
47u25
C47
+
22 21 19 18
C61 0.01
C62 100P
+
C127
22u35
47K
R107
330 R
111
3300P
C109
R1
17
47P
C129
C145 100P
47P
C147
47P
C149
0.01
C159
+
C128
22u35
Q11-15
R108 47K
C1
10
3300P
R1
12
330
100P C146 C148 47P
47P
C150
C327
22u35
+
47K R307
C309 3300P
R31
1
330
47u25
C313
+
R317
C347
C349 47P
47P
100P C345
47P
C130
47P
C329
10K R351
22u35
C227
+
C21
1
220P
47K
R207
C203 150P
R201
47K
C213 47u25
+
C245 100P
R203
R98
2.2K
1K
R205 C201
+
22u35 100
R21
1
330
R213
1K 1K
R215
R217
47K
R229 18P C221
C209
3300P
C207
100P
C205
100P
R209
10K
5 R235
47P
C249
C247 47P
R227 120
1/4W
47 1/4W
R219 220 1/4W
C215 0.01
47P
C229
R225
+
C223 10u50
R223
47P
C219
150
R237
220
VR5
4
2
220 1/4W
C217
150P
R221
47 1/4W
R233
1
R241 3.3K
1/4W
100 1/4W
3
R249
R253
47K
R245
5
1
750
2
R239
4
1
2
750
C225
0.01
3
100 1/4W
R247
R243
3.3K
1/4W
R251 20K
C228
22u35
+
R202
R99
1K
47K
R208 47K
2.2K
R204
+
C202
22u35
R206
100
C222
18P
R230 47K
R218
R214
C214 47u25
150P C204
+
C212 220P C246 100P
1K 1K
R216
3300P
C210
330
R212
C208 100P C206
R210
10K
100P
C220
C230 47P
47P
C250 47P
C248
R228 120 1/4W
C216 0.01
C224 10u50
R226
R224
+
4
VR4 220
47P
47 1/4W
R236
5
150P
C218
2
R238 150
47 1/4W
R234
1
1/4W
R220 220
220 1/4W
R222
3
R254
47K
750
R240
100 1/4W
3
R250
2
3.3K
R242 1/4W
5
1
2
1
4
C226
0.01
750
R246
1/4W
3.3K
20K
R252
R248
100 1/4W
R244
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
PLL DO
PLL C.E.
PLL CLK
PLL DATA
T MUTE
-15V
+15V
Lch
GND
Rch
STEREO
SD
CH SP.
NC
NC
13 12 11 10 9 8 7 6 5 4 3 2 1
SD
STEREO
T
MUTE
PLL
DA
T
A
PLL
CLK
PLL
C.E.
PLL
DO
CH SP
.
AUX VGND
AUX VCOMP
AUX VSY
AUX VSC
T
APE2 INDI
8 7 6 5 4 3 2 1
AUX Rch
AUX AGND
AUX Lch
T
APE2 INDI
AUX VGND
AUX VCOMP
AUX VSY AUX VSC
7 6 5 4 3 2 1
LS
L
AGND
C
R
RS NC
1 2 3 4 5 6 7
RT
AGND
LT
A
VCC
RECL
RECR
A
VSS
13 12
6 5 4 3 2 1
100
R68
100
R67
R69 47K
R70 47K
3 4 6 7 2
18
21
10
11
19
25
22
8
26
8
21
27
5
24
3
7
22
2
27
25
4
6
3
4
7
2
L2
22 1/4W
R86
22 1/4W
R85
L1
L4
R88
22 1/4W
22 1/4W
R87
L3
L5
R89
22 1/4W
47u100
C372
+
10K
R383
100u10
C381
+
6.2K
R382
100K
R392
100K
R391
+17V +17V +17V +17V
+17V
+17V
+17V
+17V
+17V
+17V
+17V +17V +17V
+17V +17V
+17V
+17V +17V
+17V
+17V
17V 17V 17V 17V
17V
17V
17V
17V
17V
17V 17V 17V
17V 17V
17V
17V
17V 17V
+17V
+17V +17V
55V
55V
55V
55V
55V
55V
55V
55V
55V
55V
55V
+55V +55V
+55V
+55V
+55V
+55V
57V
57V
57V
57V
57V
57V
57V
57V
57V
+56V
+56V
+56V
+56V
+56V
+56V
+56V
+56V
+56V
+56V
4 5 8 7
10
8 7 2 3
11
7
3
2
1
5
6
4
15V
+15V
13
12
19 20 21
C29
1000P
C30
1000P
15V
IC4
IC5
MAIN UNIT (X09-62XX-XX) (A/5)
G
E
B
A
C
16.9V
-16.6V
16.9V
-16.6V
16.9V
-16.6V
16.9V
-16.6V
16.9V
-16.6V
0.7V
0V
0.7V
0V
0.7V
0V
0.7V
0V
0.7V
0V
0V
-43.3V
0.6V
0V
-43.3V
-43.9V
-43.3V
-43.3V
-43.3V
-43.3V
-43.3V
-15.7V
-1.2V
42.1V
1.2V
42.7V
1.1V
0.4V
0.3V
-1.1V
56.6V
0V
0V
0V
0V
-56.6V
0V
0V
55.2V
-1.0V
0V
0.6V
0V 16.2V
16.2V
16.8V 15.6V
0V
-43.3V
-43.3V
0V
0.6V
0V
-43.3V
-43.3V
42.7V
42.1V
1.2V
-1.2V
-15.7V
-43.9V
0V
0.6V
-43.3V
0V
-43.3V
0V
0.6V
-43.3V
0V
-43.3V
1.2V
-15.8V
-1.2V
-43.9V
42.7V
42.1V
42.7V
42.1V
1.2V
-15.7V
-1.2V
-43.9V
42.7V
42.1V
1.2V
-1.2V
-15.7V
-43.9V
1.1V
0.4V
-1.1V
0.3V
1.1V
0.4V
-1.1V
0.3V
1.1V
0.4V
0.3V
-1.1V
1.1V
0.4V
-1.1V 0.3V
0V
0V
-56.5V
0V
0V
55.2V
0V
-1.0V
0V
0V
0V
55.2V
-1.0V
0V
0V
0V
0V
-56.5V
56.6V
0V
0V
0V
-1.0V
0V
0V
0V
55.2V
-56.5V
56.6V
56.5V
56.6V
-56.5V
0V
0V
0V
0V
55.2V
-1.0V
0V
0V
0V
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 fire, 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.
KRF-V7772D(K) SD2,2P( 99.10.29 10:18 AM y [ W 5