Sharp MD-X7H Service Manual page 91

51
99 GR
4.5V
D201
Q252 1SS133
V
KTC3199 GR
0V
4.5V
D202
1SS133
0V
R265
4.7
251
R227
022
L203
4.7 Q201
1W)
3µH
KRC107 M
C217
252
R256
4.4V
0.1(ML) 2
0.2
1K
W) (0V)
0V
3
(3.4V)
1
0V
C220
0.1
R225
C218
(ML)
1K
0.1
(ML)
L204
R228
3µH
4.7
R266
4.7
+B
R873
10K
D871
871
0V
1SS133
00
4.6V
D801
2
S4VB20
3
1
72
0V
50
88
00/25
C868
Q861
0.022
2SD2012
2V
17.8V
Q860
KTC3199 GR
2.9V
17.8V R862
680
C861
R861
47/25
220
13.4V
C860 C867
ZD861
100/16
0.022
UZ130BSC
Q862
R865
KRC107 M
2.2K 0.4V
0V 0.7V
3 2 0.7V
Q863
0V 1 0V
2SD2012
Q860~Q863:
VOLTAGE
REGURATOR
7
D203
1SS133
4.5V
R229
0V
56K
0V
Q297
KTC3199 GR
4.5V
0V
0V
Q298
KTC3199 GR
( ): Power OFF
Q260
KRC107 M
0V
0V
2 3
D261
1SS133
1
0V
R263
12K
C801
0.22
(ML)
+B1
1 1 1
GND1
2 2 2
–B1
3 3 3
4 4 4
GND2
5 5 5
6 6 6
7 7 7
8 8 8
D866
RL104A
TO LAMP PWB
1 1
CNP741
R866 R868
2 2
18
18 P50 4-D
R867 R869
18
18
8
Figure 55 SCHEMATIC DIAGRAM (12/20)
RELAY
RL201
OUL_L
OUL_R
D270
1SS133
0V
0V
Q273
KTC3199 GR
R277
0.7V
47K
R278
100
R234
6.8
C226
0.022
C228
0.022
+B
+B
–B
D802~D805:
RL104A
C803
D805
D803
0.1(ML)
+B2
D802
C804
0.1(ML)
D804
C807
R801
D820
10/25
3.9K
RL104A
D812 D815
C805
RL104A RL104A
0.1(ML)
C806
D813
D814
0.1(ML)
RL104A
RL104A
When Servicing, pay attention as the area enclosed by this line
(
9 10
– 55 –
Q271,Q272:
MOTOR DRIVER
R271
22K
R276
R272
47
22K
ZD271
UZ6.2BSB
D271
1SS133
R275
3.9K
D272
1SS133
C271
10/50
0V
4.4V
L201
3
2
0.29µH R270
270
1 0V
R236 R235
Q274
6.8 6.8
KRC107 M
R233
6.8
C225
0.022
C227
0.022
C235
0.001
C236
0.001
T801
POWER
TRANSFORMER
F802
T5A L 125V
F803
T5A L 125V
F804
T1.6A L 250V
T.F
F805
T1.6A L 250V
POWER PWB-B1
) is directly connected with AC main voltage.
11
MD-X8H
1 1
M
2 2
M971
FAN
MOTOR
SPEAKERS
C234
TERMINALS
0.001
SO201
+
SP_R-CH
–
SP_R-CH_GND
–
SP_L-CH_GND
+
SP_L-CH
CNP201
4
3
2
1
(274)
CORE (280)
L801
LINE
AC POWER
FILTER
SUPPLY
CORD(265)
AC 230V
50Hz
(274)
12