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A
B
Q Q
RECORD/PLAYBACK (X28-2XXX-XX) (A/7)
3 7 6 3 1 5 1 5 0
1
Q14
MUTE
Q13
2
MECHANISM ASS'Y
(D40-1563-05)
RED
(-)
1
MOTOR-
M
BRN
(+)
2
MOTOR+
ORG
3
CLOSE
CLOSE
YEL
COMMON
4
COM
OPEN
GRN
K1
5
OPEN
LIMIT SW
CN6
Rch
1
1
Rch
GND
3
R/P HEAD
2
2
Lch
Lch
3
3
GND
4
4
ERASE
EH
HEAD
5
5
REC: 0V
PLAY: 13.5V
REC RELAY
ON/OFF
(B)
Q27
(A)
MOTOR
(+)
(-)
C45
PHOTO REFLECTOR
11.8V
150P
R25
T E
L
1 3 9 4 2 2 9 6 5 1 3
360K
1.5K
1
FWD REC
L3
2
PLAY
4
4
3
PHOTO CATHODE
4
CrO2
5
MOTOR-
5
6
COM GND
7
+12V
FWD REC
L-CH
8
MOTOR B
PLAY
9
MOTOR A
CrO2
10
PHOTO OUT
C53
0.022
11
SDL-
SOL.
4.4V
C55
RVS REC
12
RVS REC
0.01
PACK
13
PACK
E(-)
14
NC
BLK
15
NC
Rch(+)
E(+)
RED
YEL
5
R29
Rch(-)
EH
15K
BLK
Lch(+)
BIAS-L
WHT
Lch(-)
BLK
UPC1297CA
6
w w w
DIGITAL LINE
SIGNAL LINE
GND LINE
+B
+B LINE
-B
-B LINE
2SC3246
2SC2785
DTA124ESA
2SC1740S
2SC3940A
DTC124ESA
2SC2458
2SD863
UN4112
7
C
D
REC: 5.2V
PLAY: 0V
1.4V
IC8
9.2V
(1/2)
+9V
C14
4.9V
4
10u16
1
C12
R12
+
3
4.7u35
1.5K
+
2
0V
-
+
R10
C10
R8
1.8K
0.033
R6
150K
6.2K
C8
R-CH
0.9V
0.022
+
70u/120u
SW
Q16
Q15
PB
L-CH
C7
+
AMP
0.022
120u
: 0V
R5
R7
70u
6.2K
150K
R9 1.8K
: 5.2V
0.9V
0V
12.9V
7
C13
6
C11
R11
-
+
+
10u16
8
+
4.7u35
1.5K
+
5
4.9V
1.4V
IC8
(2/2)
13.5V
+14V
+14V
+14V
L7
BIAS OSC
4
3
Q25
5
2
R146
10 1/4W
6
1
R147
10 1/4W
+
Q26
+B
REC: 7.1V
R222
13.4V
VDD
R26
4.7
REC: 5.2V
360K
1/4W
PLAY: 0V
VDD
1.6V
HX-PRO
IC3
L4
3
1
5
10
9
PRE
GND
DRIVER
11
2
8
2
13.4V
1
12
3
4
7
2.4V
13.4V
13
6
2.0V
R-CH
14
5
0.6V
0.6V
15
C54
4
1.1V
1.2V
0.022
C56
16
0.01
3
17
4.4V
2
18
1
+15V
0.6V
0.6V
13.4V
VDD
R30
VR3
VR4
15K
47K(B)
BIAS-R
47K(B)
C136
4.7u35
+
x
a o
2SA1535A
UN4212
.
i
2SD2061
2SC3311A
E
F
C67
4
3
6.7V
1u50
1
+
+
6.8V
C65
-
1u50
6.8V
2
IC11
+
(1/2)
R47
R49
12K
10K
IC4
6.8V
5.2V
6.8V
E.VOL
0V
OPE AMP
(REC LEVEL)
6.8V
R48
C66
12K
1u50
6.8V
6.8V
+
6.8V
6
7
C68
+
5
1u50
-
+
IC11
8
+
6.7V
(2/2)
VDD
VDD
13.5V
R40
C20
10K
4.7u35
+
Q44
L1
6
4
AUTO BIAS
REC: 6.3V
ON/OFF
PLAY: 0V
MPX
1
2
3
C39
4.7u35
+
+
R21
3.9K
PB-L
+
R17
1.5K
C21
R13
+
+
1000P
22K
0.3V
6.7V
6.7V
1.8V
1.9V
6.7V
0V
+
6.7V
6.7V
DOLBY OFF: 1.0V
6.7V
B: 6.6V
13.4V
C: 11.4V
6.7V
6.7V
6.7V
6.7V
6.7V
R14
6.7V
1.9V
22K
+ +
6.8V
+
+
C18
1u50
C22
+
1000P
C40
4.7u35
Q
Q
+
3
7
3
2
1
L2
+
DOLBY
PB-R
4
6
OFF: 0V
B: 6.7V
C: 12.5V
MPX
R143
4.7
+B
+B
1/4W
+14V
+14V
CrO2
NOR
R156
R151
GH
110K
47K
R157
R152
C61
GL
2.2u50
82K
56K
+
REC EQ
R158
R153
GP
220K
100K
R159
R154
FM
68K
120K
+
7.3V
R160
R155
F/Q
91K
82K
NOR
6.8V
NOR
: 0V
C43
REC
1.3V
IC9
C41
: 1.3V
CrO2
1.2V
R23
10u16
CrO2
EQ
: 1.3V
220P
: 0V
SW
L5
+
15K
R31
Q28
10K
10mH
Q29
7.3V
C44
R24
R
C42
15K
10u16
220P
+
NOR:0V
L6
+
+
NOR: 5.2V
+
CrO2
CrO2: 0V
: 5.2V
10mH
C62
+
R223
4.7 1/4W
2.2u50
+
13.4V
+14V
+B
u 1 6 3
y
2SD2012
CXA1198AP
TC9413P
G
H
P1
E6
E7
2
4
8
9
D56
D57
R43
27K
C137
0.01
R41
27K
R42
27K
R44
27K
REC: 4.5V PLAY: 4.1V
D47
R170
R224
4.7 1/4W
MUTE
13.5V
330
+14V
DRIVER
R171 100K
9
(
75
)
Q30
10
D46
R168
8
(
74
)
330
R169
R174
270K
REC/
100K
5
PLAY
: 5.0V
STOP
38
(
16
)
:0V
IC6
0.4v
2.0V
LOG AMP
1.0V
(
27
)
L-CH
+
(
28
)
+
6.7V
+12V
IC2
DOLBY
IC
Q32
OFF/B/C
6.7V
DOL
DOL
OFF:5.3V
B:5.3V
ON:0V
C:0V
+
R-CH
+14V
R178
33K
Q36
Q37
(
44
)
6
3
1
5
1
5
0
8
Q38
Q39
(
43
)
(
42
)
5.2V
(
45
)
NOR: 5.2V
CrO2: 0V
IC5
TRAY
+14V
DRIVER
+14V
+
REC L
R37
3.9K
Q23
REC LEVEL
(Lch)
REC: 0V
PLAY: 4.0J
+14V
REC MUTE
+12V
VR6
REC: 4.5V PLAY: 4.1V
REC LEVEL
REC:
(Rch)
+5V
: 5.0V
PLAY:
Q31
: 0V
+
REC R
R38
3.9K
MUTE
Q24
DRIVER
+B
m
c o
BA6138
BA10393
BA6209
.
I
J
SYSTEM
CONTROL
J2
2
9
8
9
9
SDATA
SBUSY
J1
Lch
REC IN
Rch
LINE OUT MUTE
R67
Q17
Q18
100
R71
R72
Lch
3.9K
3.9K
REC/PLAY
PLAY OUT
: 0V
Q20
STOP: 3.9V
R68
R74
100
Rch
3.9K
R73
Q19
3.9K
2.0V
0.4V
11.8V
1.0V
+
+
+
+
R165
4.7 1/4W
+12V
+12V
R177 10K
REC:0V
R176 10K
R/P
MPX
PLAY:
5.3V
Q33
Q34
Q35
Q36-43
BIAS
CONTROL
13.5V
Q43
+14V
R221
REC: 0V
10
PLAY: 10.4V
7.2V
R184
Q40
Q42
10
9
2
4
9
8
2
9
9
+
Q41
REC: 7.9V
REC: 5.3V PLAY: 0V
R185
PLAY: 0V
10 1/4W
+B
6.6V
4.3V
+
R166
R167
4.7K
CN5
VCC
10
11.8V
C162
MOTOR -
1
1/4W
0.47u50
MOTOR +
2
CLOSE
(
7
3
)
GND
4
OPEN
(
6
)
5
+14V
+12V
+5V
HA12170NT
NJM4565L-D
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