Read Sharp RT-XV300H (serv.man2) Service Manual online
RT-XV300H
– 9 –
Figure 9 SCHEMATIC DIAGRAM (2/2)
7
8
9
10
11
12
0V
METAL: 5.2V
0V
0V
9.5V
1
11.8V
11.6V
0V
0V
0V
0V
0V
0V
D
0V
0V
R158
22K
R156
100K
0V
R157
22K
0V
0V
0V
10V
+B
0V
18V
12.7V
18V
VOLTAGE
REGULATOR
Q146
2SD2394 F
18V
11.8V
12.4V
C232 0.022
18V
0V
5V
3.8V
0.1V
0V
9.2V
9.9V
10V
0.6V
R216
22K
0V
0V
0V
5.9V
0V
11.6V
0.1V
0V
4.2V
0V
0V
DOLBY
SELECTOR
Q134
KRC102 S
0.1V
11.6V
0V
3
2
1
8.4V
0V
0.1V
9V
2.6V
0.1V
0.4V
0.4V
8.4V
8.6V
2.4V
1.1V
0.4V
4.6V
9V
4.5V
5V
5V
0V
2.3V
2.5V
0V
0.2V
0.1V
0.1V
0.1V
4.2V
0V
1.4V
1.4V
0V
5V
0V
5V
5V
0V
5V
0V
FW104
RECA
RECB
AS
LLS
AS
LLS
HLS
HLS
SS
SS
SW
MA
MA
SW
3
3
2
2
1
1
9
8
7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
9
4
3
2
CNS107
1
5 4 3 2
CNS104
1
6 5 4 3 2
CNS105
1
CrO
2
RP
GND
RESET
PCNT IN
MOTOR
FWD
REV
REC
REV1
T-RDY
REV2
T-CLK
T-DATA
T-CMD
APSS
DOLBY B/C
REV3
MUTE
FWD
REV
1
SIDE A PLAY SW107
SIDE B PLAY SW106
R259
3.3K
R258
4.7K
R257
8.2K
R256
18K
SWITCH B PWB-A3
MAIN PWB-A1
+B
G
MUTE
Q116
2SJ103 GR
EMITTER AMP.
Q152
2SC2412 KR
R172
10K
EMITTER AMP.
Q151
2SC2412 KR
R252
560
R251
560
40
2K
+B
3
3
2
2
1
1
R127
3.3K
3
2
1
3
3
3
2
2
1
1
C141
1/50
R-CH P.B.
AMP.SENS.
+B
+B
DOLBY
SELECTOR
Q117
KRC104 S
DOLBY
SELECTOR
3
3
3
2
2
2
1
1
R-CH REC.
AMP. SENS.
AMP. SENS.
R150 3.3K
+B
L-CH REC.AMP.SENS.
C169
10/50
G
MUTE
Q115
2SJ103 GR
+B
VOLTAGE
REGULAYOR
IC106
NJM78M10FA
+B
+B
2
POWER
CONTROL
Q140
KRA102 M
+B
3
2 3
1
1
VOLTAGE
REGULATOR
IC104
M5278L05
+B
+B
+B
+B
POWER PWB-A5
+B
F101
T800mA
L 250V
D114~D117: RL104
C238
0.1
C237
0.1
4
1
3
2
1
POWER
CONTROL
Q157
KRC104 S
+B
POWER CONTROL Q156 KTA1266 GR
POWER
CONTROL
Q160
KRC102 S
APSS
CONTROL
Q138
KRC104 S
+B
MUTE
CONTROL
BIAS SELECTOR
CONTROL
SWITCH C PWB-A2
REVERSE /MODE
REWIND SW103
FAST
FORWARD
SW104
STOP SW105
5
R253
2.2K
R254
2.7K
R260
1.8K
LED105
SLR325MG
LED104 SLR325MG
R284 10K
FW105
6
1
R247
560
DOLBY
SELECTOR
Q133
KRC102 S
Q133
KRC102 S
3
2
1
R246
560
R249
560
R250
10K
Q132
KRC102 S
3
2
1
+B
+B
SOC101
MD-XV300H
MD-XV300H(BR)
FROM AMP. UNIT
T-P/R-CH
REC-R-CH
T-P/L-CH
REC-L-CH
R241 10K
R242 150K
R244
150K
R243 10K
FW107
D116
D114
D115
D117
C155
1/50
C171
10/50
C164
0.0022
(ML)
C168
0.1/50
C166
0.1/50
C172
10/50
IA
IA
C190
820P
R152
22K
C170
10/50
R-CH
L-CH
GND
GND
4
3
2
TP102
1
C226
10/50
C227
10/50
C228
1/50
D104
1SS119
C229
2200/25
C233
100/16
R171
10K
1
2
3
R273
10K
3
2
1
3
1
2
3
1
2
3
2
1
R268
1K
C216
0.022
9
8
7
6
5
4
3
2
1
BIAS
70uS
DOLBY_C
DOLBY_B
S
D
S
A-GND
D-GND
A-GND
A-GND
A-GND
T-RDY
T-CLK
T-DATA
T-CMD
PCNT IN
RESET
U GND
REC CNT
BIAS
PLS IN
TAPE
SOL
5V
XIN
GND
5V
GND
KEY1
MKEY1
MKEY2
XOUT
C189
820P
R169
12K
C139
0.47/50
R123
6.8K
R124
6.8K
L112
6.8mH
C188 470P
R144 2.4K
R140
22K
L111
6.8mH
C187 470P
R143 2.4K
R193
8.2K
C153
0.047(ML)
VR103
10K(B)
R287
3.3K
D106
1SS119
D102
1SS119
C182
0.047
0.047
R270
1K
R137
6.8K
R194 8.2K
R138 6.8K
C154
0.047(ML)
R128 3.3K
R286
150
(1/2W)
C235
10/50
C234
10/50
R278
10K
R279
10K
R280
1K
R282
6.8K
R288
12K
SW108
R248
820
C219
0.022
C225
0.022
R275
10K
R274
10K
R277
10K
R281
12K
Q137 KRC104 S
Q136 KRC104 S
X101
6MHz
LED101
SLR325MG
LED103
SLR325MG
LED102
SLR325MG
R272
1K
R271
1K
R199
15K
C239
330/16
VR102 10K(B)
VR101 10K(B)
R299
270
R294
22K
R293
22K
R295
10K
D101
1SS119
R110
12K
R109
12K
C181
0.022
C224
C224
270P
C223
C223
270P
C222
270P
C221
270P
270P
D113
1SS119
R267 1K
R266 1K
R265 1K
R264 1K
Q118
KRC104 S
R139
22K
R141
18K
C152
100P
C151
100P
C183
10/50
C184
10/50
R173
100K
R175
47K
R176
47K
R174
100K
R179
10K
R180
10K
C186
10/50
C185
10/50
R177 2.2K
R178
2.2K
R160
5.6K
R189
33K
R191
10K
R192
10K
R190 33K
Q119
KRA104 S
C156
22/25
C150
560P
L104
6.8mH
C157
220/16
R135
2.2K
C145
4.7/50
4.7/50
R161 330K
C158
0.22/50
R162
47K
D103
1SS119
ZD101
MTZJ13B
R285
100
C231
22/25
R290
33K
Q145
KTC3199 GR
C230 4.7/50
C160
0.0022(ML)
C162
0.0022
(ML)
C159
0.0022(ML)
C163 0.0022
C161
0.0022
C144
330P
C143
330P
R133
3.9K
R159
5.6K
R154 560
R153 560
R151
22K
R146 5.6K
R145 5.6K
R155
100K
R149
3.3K
R136
2.2K
R263
1K
R262
100
R261
100K
C218
1/50
D112
1SS119
Q135
KRC107 S
RESET
R276
10K
VR104 10K(B)
C148
1/50
C167 0.1/50
C165 0.1/50
C147
1/50
C149
560P
L103
6.8mH
C142
1/50
IC103
HA12142NT DOLBY NR
R132 3.9K
Q110
KRC104 S
Q108
KRC104 S
Q106
KRC104 S
Q105
KRC104 S
Q107 KRC104 S
Q109
KRC104 S
C146
4.7/50
Q139
KRC102 S
R283
820
(1/2)
C217
100/10
IC105
IX0142AW
10
11
12
13
14
15
16
17
18
19
21
20
22
23
24
25
26
27
28
29
30
31
32
TAPE
MICROCOMPUTER
10
11
12
13
14
15
R-CH P.B.
AMP.SENS.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
AC POWER
SUPPLY CORD
(213)
AC 230V
50Hz
CORE(230)
POWER
TRANSFORMER
T101
T. F
L110
2.2
µ
H
C192
150P
C191
150P
When Servicing,pay attention as the area
enclosed by this line ( ) is directly
connected with AC main voltage.
enclosed by this line ( ) is directly
connected with AC main voltage.
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