R926
1000P
1000P
1000P
1000P
W194
1
1K
2
3
4
5
6
10
11
C910
V-3
1K
R912
C913
C912
C91
1
1
2
V-4
WIDE
3
4
5
V-2
V-1
SYNC
6
7
+5V
10
CONT-B
CONT-P
8
9
GND
CONT-A
11
GND
GND
3
2
C127 0.22u50
+
GND
1
V-GND
FRONT-Y
13
12
C507 2.2u50
C128 0.022
+
9
FRONT-C
FRONT-V
11
10
TAPE-2
-5V
+5V
7
8
9
10
12
11
7
8
DATA
4
VST
CLK
5
6
FAN-H/L
FAN-ON
2
3
MUTE
1
+5V
5V
+5V
+5V
-5V
+5V
5V
+5V
4
GND
27
28
25
24
26
22
21
19
18
20
15
17
23
OUT
10
11
12
14
13
6
8
9
7
GND
1
3
5
4
VSS
CLK
VDD
R66
C72
220
C71
R65
R67
1K
1K
220P
220P
220K
220K
R44
R43
C41
C42
R42
R41
1K
1K
R45
R46
220P
C43 220P
C44
220K
220K
R47
R48
R59
C49 220P
220K
R57
220
R58
R54
R53
C50 220P
220P
220P
C47
C48
220
R60 220K
220K
220K
R55
1K
R56
1K
R62
R61
220P
C51
220P
C52
1K
220K
R63
220K
R64
1K
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
NC
NC
NC
PRE OUT Rch
PRE OUT Lch
ROOM B BUF Lch
ROOM B BUF Rch
GND
ROOM A SEL Lch
ROOM A SEL Rch
GND
ROOM B SEL Rch
ROOM B SEL Lch
GND
VIDEO1 REC Lch
VIDEO1 REC Rch
VIDEO2 REC Rch
VIDEO2 REC Lch
-17V
+17V
4
3
2
1
STB
DATA
CLK
DGND
1
2
3
8
+
4.7u50
+
C67
R87 100
C63
220K
+
C62
+ C66
6
5
4
7
220K
C64
C68
R88 100
C57
5
6
6
5
16
D
ATA
2
STB
V3 PLA
Y
V2 PLA
Y
V1 PLA
Y
OUT
V2 PLA
Y
V3 PLA
Y
V4 PLA
Y
ROOM A
OUT
V1 PLA
Y
2
6
3
7
4
8
12
R70
470K
C53
100P
R71
470K
R69
470K
15
16
13
16
15
13
12
8
7
6
4
3
2
0.01
C54
+17V
+17V
+17V
+17V
+17V
+17V
+17V
+17V
+17V
17V
-17V
17V
17V
17V
17V
220P
220P
220K
220K
220
R68
C61
C65
10u50
R86
R85
47P
47P
100P
100P
150P
4.7u50
10u50
150P
C55
B
+B
+5V
+5V
+5V
+5V
D92
5V
R
AVR
Q902
D95
Q
D94
D93
3/6
X08-
CN19
E18
CN27
CN11
D901,902
: MA111
D92-95
: DA204K
Q902
: 2SA1611(M5,M6)
Q54
: UN5212 or DTC124EUA
Q53
: UN5119 or DTA113ZUA
Q15-17,55
: 2SC4213(B)
Q12,14,30,31,52,901
: 2SC4081(R,S)
IC91
: NJM4580L
IC90
: BA7645N
IC53
: NJU3713D
IC52
: MC14577CF
IC13
: TC74HC4051AP
IC11,12,51
: SN761200N
-CN26
5/6
X25-A/7
X25-A/7
5/6
-CN25
(AUDIO)
INPUT SEL.
Lch 2
Rch 1
J5
PRE OUT (ROOM B)
SECOND ROOM
Rch 1
PLAY IN
VIDEO 4
Lch 2
J3
Lch 4
Rch 3
VIDEO 3
PLAY IN
Lch 4
VIDEO 1
REC OUT
Rch 3
Lch 2
VIDEO 2
PLAY IN
Rch 1
J4
PLAY IN
VIDEO 1
Lch 6
Rch 5
CN2
CN10
-CN28
X25-A/7
5/6
-CN22
X25-A/7
5/6
IC5
IC5
LINE BUFF
ROOM B
(BOTTOM VIEW)
VIDEO
IC5 : NJM4565D
IC4 : TC9163AF
D
E
F
(1/2)
(2/2)
(AUDIO)
ROOM B:
(ROOM A:
)
A
B
A
A
A
B
B
B
GND LINE
SIGNAL LINE
B LINE
B LINE
4.2V
5.0V
16.3V
-16.5V
16.3V
-16.5V
4.9V
F
KRF-V9992D(M) (2/6)
E
D
VR-3090/3100(K,P) (2/6)
IC4
G
H
(X11-380X-XX) (B/7)
VR-3100(K,P) ONLY
VR-3100(K,P) ONLY
(X25-604X-XX) (B/7)
AE
AF
AH
AJ
AL
AN
AG
AI
AK
AM
KRF-V9992D/VR-3090/3100
Y05-3900-10
2SC3944
DTA124EUA
NJM4565D
CAUTION: For continued safety,
replace safety critical components
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 resistance mea-
surements shall be carried out
(exposed parts are acceptably insu-
lated from the supply circuit) before
the appliance is returned to the cus-
tomer.
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 instru-
ments used or on the product.
