Kenwood KRF-V7070D Service Manual page 11

U V
(X09-6760-10) (A/5)
MD/TAPE
REC OUT
VIDEO1
REC OUT
R T.OUT
FR VIN
FR OUT
65
R V3
SR OUT
66
R V2
67
SBR OUT
R V1
68
R MD/TAPE SW OUT
69
R AUX
70 C OUT
R TUNER
71 SBL OUT
IC2
R PHONO
72
SL OUT
R CD/DVD INPUT SELECTOR
73
& E.VOLUME
AVEE(-7V)
74
L CD/DVD
75
L PHONO
FL OUT
76
L TUNER
77 OUT GND
L AUX
78
L MD/TAPE
79 AVCC (+7V)
L V1
80
L V2
DGND
CLOCK
DATA
LATCH
R312 R310
1 68 1W
6.9V 12.2V
IC4 8 SW OUT C221 R237
C229
4.7u50 1K
(1/2) 3
22u50
+
2
+
IC4 1
SW&SB
PRE AMP
R227 47K
C225 3900P
MUTE
R235
C Q337
47 R231 1K
R437 1K C226 10P
R228 47K
R438 1K
C230 4
6
C222
R236 R232 1K 22u50
7
4.7u50
5
+
47
Q338 IC4 +
(2/2) SB OUT
E
12.2V
+12V
E22
5 4 3 2 1
7 5 3 1 3 2 1 ∗
CN3
WH221
8 6 4 2 WH21
X14-H/11-
4/4
WH20
BA-6
W X
CN10 CN11 CN12
2 1 2 1 2 1
C3
R1 10u50
+
1K
PHONO
EQ AMP
R2 C4
1K 10u50 C6 220P C5 220P
+
R4 30K R3 30K
C8 C7
100u10 100u10
+
+
C10 C9
270P 270P
R OUT
IC1
(2/2)
40 C18 C17
100P 100P
C58 2.2u50
39
38 + R14 47K R13 47K
∗ 71
W6
C320 100P C319 100P
37 R112 100
6
36 R222 100 75
7
12.2V
R162 100
35
+12V
35
R161 100 33
34
8
R221 100
33
IC5
B SB/SW
SB/SW
32 R111 100 SWITCH IC
9 SEL.
∗
W7
+12V
34
∗
Q352
W5
32
31
31
D21 R354
30 R311
47K
+12V
68 1W
R313
R355 3K
2.2
29
28
IC5
C351 220P
27
26 C352 220P
25 C353 220P
R351 100
27
R352 100
26
R353 100
25
1
4
R314
680 1W
+12V
+12V
12.2V 12.2V
80
12.2V
+12V
IC1 : NJM4580L
IC2 : M61516FP
IC3 : BU4066BC
IC4 : NJM4565D
IC5 : LC4966
IC6 : NJM4580D-D
Q1-4,21-24,41-44,308,359,
362,365,607 : 2SA992(F,E)
Q5,6,25,26,45,46 : 2SA1123(R,S)
4.9V
Q7-10,27-30,47-50 : 2SC2631(R,S)
Q11,12,31,32,51,52 : TRAIT3KN
Q13,14,33,34,53,54 : TRAIT3KP
Q301,309-312 : KTC3200
Q302 : UN4219 or
4 3 2 1
DTC113ZSA
Q303 : 2SC3940A(R,S)
Q304,306 : 2SB1640
Q305,313,351 : UN421N
Q307 : 2SD2525
Q331-338,605,606 : 2SC2878(B)
X25-B/2-
Q352,608,609 : UN4212 or
3/4
CN303
DTC124ESA
Q353-358,360,361,363,364,
AO-6 602-604 : 2SC1845(F,E)
Y Z
∗
CN13 CN14 CN15
2 1 2 1 2 1
R362 470
PROTECTION
2
Q354
Q12,14 Q11,13
∗
POWER R356 R358 POWER
AMP AMP
30K
C356
4700P
Q12 Q14
20mA 20mA
R98
L OUT
220 1/4W
VR2
IC1
470
(1/2)
IDLE ADJ.(FRch)
∗
C84
1.2V -1.2V
1.2V
+
C78 C79
560P 46.8V 560P 46.8V
Q10
R84 R83
Q6 2ND
R88
220 330 1/4W 220
46.2V -46.8V
1/4W 1/4W
R86
D2 D1
R82 5.6K R81
33.3V R90 47K
220 1/4W 220
C76 10P
1/4W Q8 1/4W
C86
47P
∗ ∗
R80 C74
Q6 Q5
CURRENT CURRENT
C72 100P
0V
MIRROR MIRROR
Q4 Q602 R78
1.5K
R72 -46.2V R71
6.8K 0.6V 6.8K
D602
1st 1st
Q2
C66
330P
R68
47K
R432
Q332
1K
R64
100K
FRONT Rch FRONT Lch
6dB ATT.
∗
Q606
R604
Q351
SB/SW
SLE.
+15.4V
SW:4.8V
SB:0V
+47.2V
B
5 10
31
+12V
12.2V
12
12.2V
1 2 3 4 5 6
D1-6,13,16,28-30,32-35,
53,54,57,58,61,64,66,
68,602-604 : 1SS133 or
HSS104A
1 2 3 4 5 6
D11,12 : TS6P03G-B or
D5SBA20F03
D14,15 : 1SR139-400
D17,19 : MTZJ16(B) or
R615
RD16ES(B)
10K
D18 : MTZJ15(B) or
∗
RD15ES(B)
C609
D20,21 : MTZJ6.8(B) or
330P
∗
RD6.8ES(B)
C610
D22,26 : MTZJ5.1(B) or
33P
C606 82P
RD5.1ES(B)
∗
D23 : R620 4.7K 3
∗
D24 : 2
∗
D25 : 6
7
D27,51,52,55,56,59,60
5
: 1SS244 R619 4.7K
IC6(2/2)
D63,65,67,69 : MTZJ3.9(B) or
AN R
C605 82P
RD3.9ES(B)
OUT
D221 : MTZJ11(B) or
F
RD11ES(B)
D605-607 : MTZJ7.5(B) or
RD7.5ES(B)
AA AB
R363 470 R407 470
PROTECTION PROTECTION
4 6
Q353 Q357
Q51,53
∗ ∗
R357 R359 POWER R401 R403
AMP
30K 30K
C355 C359
4700P 4700P
Q11 Q13 Q51 Q53
20mA
R97 R197
220 1/4W 220 1/4W
VR1 VR5
470 470
IDLE ADJ.(FLch) IDLE ADJ.(Cch)
∗ ∗
C85 C183
-1.2V 1.2V -1.2V
+ +
C177
560P 46.8V
Q49
Q9
R183
2ND 2ND
Q45
Q5
R87 R187
330 1/4W 220 330 1/4W
46.2V -46.8V 46.2V -46.8V
1/4W
R85 R185
D5
5.6K 5.6K
33.3V R89 47K R181 33.3V R189 47K
Q7
1/4W 220 1/4W
C77 10P C175 10P
1/4W
C87 C185 Q47
47P 47P
∗ ∗ ∗ ∗
R79 C75 R179
Q45
+
CURRENT
C73 100P C171 100P
0V MIRROR 0V
Q603 R77 Q43 Q604
Q3
1.5K
-46.2V R171 -46.2V
0.6V 6.8K 0.6V
D603 1st D604
Q41
Q1
C67
330P
R67
47K
Q335
R431
Q331
1K
R63 Cch
100K
6dB
ATT.
34
37
∗ Q605
32
R603
+15.4V +15.4V
+B
+47.2V +47.2V
48.3V 48.3V
+12V +12V
12.2V 12.2V
12.2V
+12V
7 8 9 10 WH7
(X09- ) (E/5)
R613 47K
CN8
7 8 9 10 Q609
R614
1K
D607
Q608
R611 270
IC3
C607
8
1 22u50
+
4
IC6 AN L
(1/2) OUT
R624
100K
D606
AC AD
R388 470
PROTECTION
8
Q356
Q32,34
∗
POWER R382 R384
AMP
30K
C358
4700P
Q32 Q34
20mA
R148
220 1/4W
VR4
470
IDLE ADJ.(SRch)
C134
22u50
1.2V -1.2V
+
C128
560P 46.8V
Q30
R134
Q26 2ND
R138
220 330 1/4W
46.2V -46.8V
1/4W
R136
D4
5.6K
R132 33.3V
R140 47K
220 1/4W
C136
1/4W Q28 C126 10P
47P
Q26
∗ C124
C173
CURRENT R130 220u10
+ MIRROR
+
C122 100P
0V
R128
R177
Q24 D28
1.5K
1.5K
-46.2V
R122
6.8K
0.6V
R126
1st
1.5K
Q22
C165
-46.2V
C116
330P
330P
R167
R118
47K
47K
R435
R434
1K
Q334 1K
R163
SURROUND Rch R114
100K
100K
HI-TAP
ON : 61.3V
OFF : 55.3V
+15.4V
+47.2V
48.3V
B
HI-TAP ON : -61.3V
OFF : -55.3V
+12V
12.2V
RED BLUE
∗
19 17 15 13 11 9 7
CN5
18 16 14 12 10 8 6
X25-B/2-
3/4
CN301
AO-3