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R169
12K
C139
0.47/50
C145
R135
4.7/50
2.2K
C151
R133
R-CH P.B.
100P
3.9K
AMP.SENS.
R127
3.3K
C141
R123
1/50
6.8K
C143
330P
C189
820P
2
2
R-CH P.B.
3
3
1
1
AMP.SENS.
3
0V
C142
C144
2
3
1/50
330P
1
0V
C149
C190
560P
820P
L103
6.8mH
3
3
C147
1/50
1
1
2
2
R191
R189
10K
R124
33K
6.8K
R110
R136
12K
2.2K
C146
4.7/50
70uS
BIAS
+B
SWITCH B PWB-A3
R256
R257
R258
R259
18K
8.2K
4.7K
3.3K
LED105
SLR325MG
5
1
FW104
5 4 3 2
1
CNS104
R253
2.2K
R252
560
6
1
FW105
6 5 4 3 2
1
CNS105
R249
560
2
R246
1
R247
560
560
3
R250
Q132
10K
KRC102 S
8.4V
2
0V
0.4V
1
MOTOR
0.4V
FWD
2
8.4V
3
REV
40
8.6V
REC
4
2K
2.4V
R244
5
REV1
150K
1.1V
6
T-RDY
0.4V
7
REV2
4.6V
8
T-CLK
9V
9
T-DATA
4.5V
10
T-CMD
5V
PCNT IN
11
5V
RESET
12
0V
13
GND
2.3V
XOUT
14
2.5V
15
XIN
0V
16
GND
X101
6MHz
7
VR103
10K(B)
R137
R109
L-CH REC.AMP.SENS.
6.8K
12K
R193
C159
8.2K
0.0022(ML)
C153
0.047(ML)
L111
C155
6.8mH
1/50
+B
1
2
3
4
5
6
7
8
9
10
IA
MA
C156
22/25
IA
MA
30
29
28
27
26
25
24
23
22
21
R141
18K
R140
L112
22K
6.8mH
DOLBY
C152
SELECTOR
100P
R293
R294
Q117
22K
22K
KRC104 S
L104
2
0V
C150
6.8mH
560P
1
0V
0V
2
3
C148
+B
1/50
1
11.8V
3
2
11.6V
0V
R192
10K
0V
1
R295
10K
3
0V
+B
+B
D101
D102
1SS119
1SS119
R287
3.3K
9.2V
D106
R216
1SS119
22K
POWER
CONTROL
3
0.6V
Q160
KRC102 S
1
0V
2
0V
R273
10K
R254
R260
2.7K
1.8K
R278
10K
R277
10K
DOLBY
SELECTOR
Q134
KRC102 S
2
3
0.1V
11.6V
1
DOLBY
0V
SELECTOR
Q133
KRC102 S
3
0.1V
1
IC105
IX0142AW
TAPE
MICROCOMPUTER
SOL
32
2.6V
PLS IN
31
TAPE
0.1V
BIAS
30
0.2V
CrO
RP
29
2
0.1V
REC CNT
28
0.1V
DOLBY_B
27
0.1V
DOLBY_C
26
4.2V
MUTE
25
0V
REV3
24
1.4V
DOLBY B/C
23
APSS
1.4V
22
MKEY2
0V
MKEY1
21
5V
KEY1
20
0V
GND
19
+B
5V
5V
18
+B
5V
5V
17
C216
C217
0.022
100/10
8
Figure 9 SCHEMATIC DIAGRAM (2/2)
R149
C171
3.3K
10/50
2SJ103 GR
R157
22K
0V
C161
S
C169
0.0022
R155
10/50
100K
TP102
11
12
13
14
15
L-CH
1
AS
HLS
SS
LLS
2
GND
3
GND
4
R-CH
AS
SS
HLS
LLS
20
19
18
17
16
MUTE
Q116
2SJ103 GR
C172
10/50
0V
S
R156
R158
C170
100K
22K
10/50
C166
EMITTER AMP.
0.1/50
Q152
2SC2412 KR
C186
10/50
R178
2.2K
C185
10/50
R-CH REC.
AMP. SENS.
C154
0.047(ML)
POWER
CONTROL
Q157
KRC104 S
2
3
0.1V
1
0V
3
1
2
0V
U GND
R282
6.8K
+B
0V
2
1
3
2
1
0V
3
R271
R275
1K
10K
R272
R274
1K
10K
R268
1K
C182
0.047
D113
1SS119
R263
1K
C181
C219
0.022
0.022
C224
270P
C223
270P
C222
C218
270P
1/50
3
2
C221
5V
270P
D112
0V
1SS119
1
Q135
R261
R262
0V
KRC107 S
100K
100
RESET
9
10
– 9 –
MUTE
Q115
VOLTAGE
0V
REGULAYOR
D
IC106
R159
G
5.6K
0V
NJM78M10FA
+B
10V
1
C235
10/50
D103
1SS119
VOLTAGE
REGULATOR
R162
Q146
47K
2SD2394 F
+B
11.8V
0V
(1/2W)
G
0V
C233
D
100/16
R160
5.6K
R172
10K
R174
100K
C184
C192
10/50
150P
R176
47K
R171
R175
VOLTAGE
10K
47K
REGULATOR
C191
150P
IC104
M5278L05
C183
R173
10/50
+B
5V
100K
1
R299
270
2
+B
0V
C239
C226
C227
330/16
10/50
10/50
+B
L110
2.2µH
+B
CNS107
1
2
3
4
FW107
POWER
4
1
TRANSFORMER
F101
T800mA
L 250V
D117
D116
C237
0.1
+B
C238
0.1
D114
D115
D114~D117: RL104
POWER PWB-A5
SOC101
1
T-P/L-CH
When Servicing,pay attention as the area
2
REC-L-CH
3
A-GND
enclosed by this line (
4
REC-R-CH
connected with AC main voltage.
5
A-GND
6
T-P/R-CH
MD-XV300H
7
A-GND
MD-XV300H(BR)
8
A-GND
FROM AMP. UNIT
9
D-GND
10
T-DATA
T-CLK
11
T-CMD
12
T-RDY
13
PCNT IN
14
15
RESET
R270
1K
11
RT-XV300H
MAIN PWB-A1
18V
3
C234
2
10/50
0V
18V
Q145
KTC3199 GR
+B
+B
18V
R286
150
12.7V
R285
C231
100
22/25
POWER
CONTROL
Q140
KRA102 M
2
R199
15K
1
R283
2 3
820
(1/2)
1
Q139
KRC102 S
3
+B
C229
2200/25
D104
+B
1SS119
3
C228
1/50
T101
T. F
CORE(230)
AC POWER
SUPPLY CORD
(213)
AC 230V
50Hz
) is directly
12
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