Kenwood KRF-V7773D Service Manual page 33

CH CI
X13-B/5
-CN53
(X11-38XX-XX) (B/4)
2/6
E
J1
R501
Lch 1
1
X13-B/5 1K
-CN52
REC
2/6
R502
Rch 2
F
1K
VIDEO1
X13-D/5 R503
Lch 3
-CN11
470
3/6
PLAY
G
R504
Rch 4
470
X13-A/5
-CN6
R505
Lch 5
3/6 1K
2
REC
I
R506
Rch 6
X13-A/5
1K
-CN12
VIDEO2
J2
3/6
R507
Lch 1
470
L
PLAY
X13-A/5
R508
-CN5
Rch 2
470
3/6
R509
Lch 3
M
470
VIDEO3 IN
X13-A/5
3
-CN4
R510
Rch 4
3/6
470
N R511
Lch 5
470
VIDEO4 IN
R512
Rch 6
470
J3
R513
Lch 1
470
4
R514
Rch 2
470
R515
LSch 3
470
6ch INPUT
R516
RSch 4
470
R517
SWch 5
470
5
R518
Cch 6
470
CAUTION: For continued safety,
replace safety critical components
6
only with manufacturer's recom-
mended parts (refer to parts list).
indicates safety critical compo-
nents. 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 resis-
tance measurements shall be car-
ried out (exposed parts are
acceptably insulated from the sup-
ply circuit) before the appliance is
7
returned to the customer.
CJ CK
C566
0.01
ROOM A
IC1
2 Lch (BOTTOM VIEW) Rch
16.7V
30 1
+17V VDD VSS
29 2
VIDEO 1
28 3
28 VIDEO 2
27 4
27 VIDEO 3
26 5
VIDEO 4
26
2
25 6
24 7
AV AUX
23 8
28
DVD 8
22 9
21 10
COMMON
20 TAPE2 11
MONITOR
3
19 12
18 13
R1
NC NC
1K
17 14
DATA ST
28
28
16 15
CK GND
7
3
C568
E
0.01
ROOM B
27 IC5
(BOTTOM VIEW)
27 Lch Rch
16.7V
30 1 -17.5V
+17V VDD VSS 17V
29 2
VIDEO 1
4
28 3
28 VIDEO 2
26
27 4
25 27 VIDEO 3
26 5
25 6
25 VIDEO 4
5
24 7
DVD
23 8
22 9
21 10
21 SL SR
20 11
20 LB RB
19 12
19
18 13
NC NC
8 17 14
DATA ST
16
CK
15
GND
3
+17V
4 16.7V
IC8 (1/2)
C51 R51
R57
4.7u50 470 8
3
3 47
1
+ 2 12
5
R55 100
C55 100P
C520
100P
C56 100P
6
R56 100
R58
6
C52 R52
7 47
4.7u50 470
5 13
4
+ 4
IC8 (2/2)
-17.5V
17V
+17V
IC9 (1/2) 16.7V
C61 R61
R67
4.7u50 470 3 8
47
5 1
+ 11
2
R65 4.7K
R537
1K C65 100P
C522
100P
C66 100P
R66 100
R68
6
C62 R62
7 47
4.7u50 470 5 10
6
+ 4
IC9 (2/2) -17.5V
17V
CL CM
16.7V
-17.5V
17V
+17V
2
3
IC7 (1/2)
C31 R31
4 C37 R547
4.7u50 470 5 8
7 4.7u50 47
+
6
5
+
R35 100
REC
BUFF C35 100P
C524
100P
C36 100P
10 R36 100
C38 R548
2
11
C32 R32
1 4.7u50 47
4.7u50 470
3
+
+ 4
-17.5V
IC7 (2/2)
17V
+17V
IC2 (1/2) 16.7V
C1 R3
C7
4.7u50 470 8
3
1 22u50
+
2
+
C567 R7 100
LINE
100P C5 100P
BUFF C42
100P
C569
100P
C6 100P
R8 100
C8
6
C2 R4 22u50 R10
2 7
4.7u50 470
5
+
2 4.7K
+
4
-17.5V
IC4 (1/2)
3
17V
3
4
+17V
4
IC2 (2/2) 16.7V
C11 R17
C17 R549
4.7u50 470 5 8
5 22u50
7
+
6
5 +
R21 100
8
ROOM
A BUFF
8 C15 100P
C572
C16 100P 100P
R22 100
10
C18 R550
2
C12 R18
22u50
11 1
4.7u50 470 3
+
12 + 4
-17.5V
IC4 (2/2)
R69
17V
1K
+17V
IC6 (1/2) 16.7V
C21 R25
C27 R551
4.7u50 470 5 8
4.7u50
7
+
6
+
R29 10
ROOM
B BUFF
C25 100
C574
100P
C26 100
R30 100
C28 R552
2
C22 R26
1 4.7u50
4.7u50 470
3
+
+
4
-17.5V
IC6 (2/2)
17V
+17V
17V
The DC voltage is an actual reading measured with a high impedance type voltmeter. The measurement value may vary
depending on the measuring instruments used or on the product. Refer to the voltage during PLAY unless otherwise
specified; The value shown in ( ) is the voltage measured at the moment of STOP.
CN CO
16.7V
+17V
IC3 (BOTTOM VIEW)
30 1
VDD VSS 17V
29 VIDEO 1 2
2
REC
28 VIDEO 2 3
3
REC
27 4
R553 11K 26 5 R554 11K
-3dB
R555 4.7K R556 4.7K
25 6
-6dB
24 7
7
23 8
DIR 8
22 9
ATT 9
21 10
20 11
DIGITAL
REC
19 12
18 13
R70
NC NC
17 14 1K
DATA ST
16 15
CK GND
MODE SELECTOR
8
7
+17V
E.VOL
IC304
47
13 12
DATA CK
14 11
STB GND
15 10
NC NC
16.7V 16 9 16.7V
+17V CS2 CS1 +17V
17 8
NC NC
18 7
AGND
C43 0.1 19 6 C44 0.1
LD2
C363 0.1 C364 0.1
47
9
R595 C361 C362 R596
8.2K 560P 560P 8.2K
20 5
LD1
21 4
IN
3
C582
C579 100P NC
100P
2
OUT
R579 100K 22
1
NC
VSS 17V
23
-17.5V
24
+17V VDD
C578
16.7V 100P
C580
R580
0.01
100K
47
+17V
IC308 (1/2)
R603 C365 16.7V
47 4.7u50 8
5
7
+
6
R381 13K
C369
22u50 C373 33P
47 +
C375
100P
C370
22u50 C374 33P
+
R382 13K
2
R604 C366
1
47 4.7u50 3
+ 4
IC308
-17.5V
D
(2/2)
+17V
17V
CP CQ
11
CN3
21 TAPE2 Lch
20 TAPE2 Rch
+17V 19 +17V
18 REC OUT Lch
-17.5V
17 REC OUT Rch
17V 16 -17V
C576
100P 15 A SEL Lch
14 GND
13 A SEL Rch
12 GND
11 B SEL Lch O
10 GND
9 B SEL Rch
8 A. GND
L 7 T. Lch
G 6 T. GND
R 5 T. Rch
4 GND
3 T/SEL
2 T/SEL
1 SEL ST1
CN4
1 NC
2 V DATA
3 V CK
4 NC
CN1
13 13 6ch RS
12 12 6ch LS
11 11 6ch SW
10 10 6ch C
9 Rch IN
8 Lch IN
7 A GND 1
6 D REC Rch
5 D REC Lch
+17V 4 +17V
17V 3 -17V
2 17V REF GND
17V RETURN
1
GND
CN2
20 SEL ST3
19 SEL ST1
18 T/SEL
17 T/SEL
L 16 T.Lch
G 15 T.GND
R 14 T.Rch
19 13 LB/LSch OUT
12 12 RB/RSch OUT
11 A.GND 2
7 10 AUX Rch
9 AUX GND
24 8 AUX Lch
7 u-COM GND
21 6 LSch IN
10 5 RSch IN
4 B PRE OUT L
20
3 B PRE OUT R
17V
11
2 NC
1 V ST