Emerson LC320EM2F Service Manual page 40

Power Supply 3 Schematic Diagram
4
POWER SUPPLY CBA
CONTINUE
POWER 1
+24V
Q1300
2SA1576UBTLQ
(+12V REG.)
R1305
510/2W
12.0
C1304
C1305
220/35V
0.1
R1309
10K
Q1303
2SA1576UBTLQ
(SW+12V)
12.0 11.9
R1304
R1307 4.7K
11.2
1K
3
R1303
4.7K
R1308
4.7K
0.1
R1306
Q1301
10K
0.7
KTC3875S
-Y-RTK/P
C1311 R1310
0 (SWITCHING)
1000P 22K
R1220
OPEN
D1201
CONTINUE
1SS133
POWER 1
BACKLIGHT-SW
BACKLIGHT-ADJ
23.8
PROTECT3
21.8
C1208
2 0.47
17.8
11.9
C1206 C1201
10/50V 0.1
R1205 R1204
560K 75K
C1213
0.01
R1202
130K
R1213 R1214
4.7K 0
R1203
8.2K
C1207
R1209
1000P
4.7K
3.1
R1215 R1212
10K 10K
0.1
1 C1211 R1208
0
OPEN 22K
3.1
-0.2
0 Q1202
KTC3875S-Y-RTK/P
(SWITCHING)
M
C1700 C1709 C1701
R1301
2200/35V 2200/35V OPEN
47K
R1302
12.0 D1700
51K R1700
1SS133
100
C1302
C1303
10/50V
11.2 0.1
D1701 C1703
15BSB-T26 1000P
R1300
D1300 C1300
10K
5V6BSB-T26 0.1
R1222
D1301 10
5V6BSB-T26
D1702
R1702
1SS133
100
D1703 C1704
15BSB-T26 1000P
C1301
1000P
IC1200
BD9244AFV
(PWM CONTROL) D1200 D1202
1SS133 1SS133
0 1.8
1 24
R1216 R1221
100 1
1.8 7.6
2 REG 23
C1204 C1205
24.1 0.1 2.2
3 22
OUTPUT
21.2
C1209
4 21
0.47
16.9
5 20 Q1203
OPEN
2.2 (SWITCHING)
6 VCC VLO 19 0
LOGIC
5.9 0.2
7 STB 18
PWM
2.0 0.8
8 17
FEED
BACK 1.2
9 OSC 16
C1203
6800P
0 1.1
10 GND 15
C1202
0 0
6800P
11 14
DUTY PROTECT
3.1 0
12 13
C1210
0.47
Q1201
KTC3875S-Y-RTK/P
(SWITCHING)
R1201
68K
R1206 D1203
10K 1SS133
R1207 C1200 C1212 R1200 C1214
33K OPEN 0.47 68K OPEN
N O
C1702 C1710
1 1
24.0
D Q1700
TK40P04M1
21.2 G
(SWITCHING)
S
R1701 17.5
10K
C1100 2.2
R1704
C1101 2.2
4.7/1W
C1705
C1102 2.2
0.022
17.5
D Q1701
TK40P04M1
C1103 2.2
G
1.6
(SWITCHING)
R1703 0 S
C1116 2.2
10K
24.0
C1117 2.2
D Q1702
D1704
R1705 TK40P04M1
1SS133
100
21.2 G
(SWITCHING)
S
D1705 C1706 R1706 17.5
15BSB-T26 1000P 10K
R1223
10
R1709
4.7/1W
C1708
17.5
D Q1703
D1706 0.022
R1707 TK40P04M1
1SS133
100
1.6 G
(SWITCHING)
S
D1707 C1707 R1708 0
15BSB-T26 1000P 10K
R1501 100K
D1500 R1502 100K
R1229 DAN202U
JS1200 0
R1503 100K
C1500 R1500 R1504 100K
7.6
R1227 0.01 1M
OPEN
5.1 R1505 100K
R1228
D1501 R1506 100K
R1225 OPEN
DAN202U
OPEN
5.1
R1507 100K
0.2
R1226
R1508 100K
OPEN
0 Q1204
OPEN
R1509 100K
(SWITCHING)
D1502 R1510 100K
DAN202U
R1511 100K
R1512 100K
P
10-5
C1104
D1503
R1100 R1101
10P/6.3KV
DAN202U
39K 0
C1105 C1118
R1102
330P 330P
2.2K
R1103A OPEN
T1100
INVERTER
R1104 R1105
R1143 OPEN
TRANS 100 13
D1506
DAN202U
R1103 470
2 8
R1106A OPEN
4 7
R1107 R1108
R1146 OPEN
100 13
1 6
R1106 470
3 5
R1109 R1110
39K 0
C1107 C1119
C1106 R1111
330P 330P
10P/6.3KV 2.2K
C1108
D1504
R1112 R1113
10P/6.3KV
DAN202U
39K 0
C1109 C1120
R1114
330P 330P
2.2K
R1115A OPEN
T1101
INVERTER R1116 R1117
R1145 OPEN
TRANS 100 13
D1507
DAN202U
R1115 470
2 8
R1118A OPEN
4 7
R1119 R1120
R1148 OPEN
100 13
1 6
R1118 470
3 5
R1121 R1122
39K 0
C1111 C1121
C1110 R1123
330P 330P
10P/6.3KV 2.2K
C1112
D1505
R1124 R1125
10P/6.3KV
DAN202U
39K 0
C1113 C1122
R1126
330P 330P
2.2K
R1127A OPEN
T1102
INVERTER
R1128 R1129
R1147 OPEN
TRANS 100 13
D1508
DAN202U
R1127 470
2 8
R1130A OPEN
4 7
R1131 R1132
R1150 OPEN
100 13
1 6
R1130 470
5
3
R1133 R1134
39K 0
C1115 C1123
C1114 R1135
330P 330P
10P/6.3KV 2.2K
R1513
C1501
1M
1000P
R1515 R1516
27K 6.8K
R1514
C1502
39K
3300P
Q
CN1100
1
BACK
LIGHT
2
CN1101
1
BACK
LIGHT
2
CN1102
1
BACK
LIGHT
2
LCD
MODULE
ASSEMBLY
R
FL11.4SCM3