Power Supply 1 Schematic Diagram - Emerson LC320EM2F Service Manual

Power Supply 1 Schematic Diagram

CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F601) is blown , check to see that all components in the power supply
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.
HOT CIRCUIT. BE CAREFUL.
F601
AC600
CN600
4A/125V
AC CORD
2
1
4A 125V
R601
1.2M/1/2W
OR
CN601 SA601
SURGE
2
ABSORBER
4
1
C600
0.47/250V
R611
2.2/5W
L600
LINE FILTER D611
R602
1ZB220
2.2/5W
-YBB
C601
D601 D602
0.47/250V
1N5406-BU 1N5406-BU
L601
LINE D600 D603
FILTER 1N5406-BU 1N5406-BU
C613
C603 C602 C604
R613 R612
C614
D612 2200P
270 390 270
68K 68K OPEN
OPEN /1KV
/200V /200V /200V
/1W /1W
R603
D613
220K
3 FR155-B/P
BC602
R604 BEAD
220K
R600 BC601
220K BEAD
R606A R605A
Q600 OPEN OPEN
TK10A50D
165.8 D
(SWITCHING)
C605 R606 R605
0.1 120 120
G 3.7
S
0.1
R607A
C606 D609
OPEN
1200P
3.7 R607
1.2K
0.4
D605
D604
0
4V3BSB-T26
27BSB-T26
Q601
C607
2SC2120-Y
820P
SWITCHING
/2KV R610A R610
CONTROL
OPEN 270
14.0
2
C609
1500P 0.4
D607
R608
D610 D606 D609A R609 C608
0.18
1ZB36BB OPEN OPEN 3.9K 0.068
/2W
1
HOT
A
CAUTION ! :
4A/125V
ATTENTION : Utiliser un fusible de rechange de même type de 4A, 125V.
R233
D662 8.2
RS1GJTB /1/2W 21.9
Q222
D661
2SA950-O
RS1GJTB
D640 (SW+15.8V)
SK2B-TR
JS660
R235 R234
C637 D645 5.6 5.6
R269
470/25V 1ZB22BB
12K /1/2W /1/2W
C610
1000P/250V
C611
1000P/250V
R650 D649 D650 R642
1 SK16-T/R 5V6BSB-T26 75K
C641 C644
2200P/1KV 1/50V
C633
OPEN
C612
D637
1000P/250V
SB3150BH
Q633
KTC3875S-Y-RTK/P
D646
SB3150BH (RESET)
31.9
D644
D648
C648 C649
SB3150BH
1ZB30BB
T600 2200/35V 2200/35V
POWER TRANS
D634
SB3150BH
3 15
R251
C631
R631
22k
1000/35V
15K
4 14
D642
SK16-T/R
5 13
C638
100/25V
12
7 11
D643
SK16-T/R
10
D660
RS1GJTB
8 9
C647 C639
R663
100/50V 100
39K
/10V
R636A R635A
OPEN OPEN
IC601
R636 R635
TLP781F 120 120
(D4-FUNBLL F)
ERROR
R637
VOLTAGE DET R644
10K
18K
23.7 C645
2200P
22.7
Q634
D631
KTC3875S-Y-RTK/P
5V6BSB-T26
22.7
(FEED BACK)
R649A R649
Q631
OPEN 3.9K
KTC3875S-Y-RTK/P
19.3 6.2
(SWITCHING)
5.6
0.1
0
R632
47K
D654
*2 5V6BSB-T26
IC202
PQ200WNA1ZPH
(+3.3V REG.)
R654
0.1
10K
0.6
0 Q635 R655
KTC3875S-Y-RTK/P 47K
1 2 3 4 5
(SWITCHING)
8.5 7.4 3.3 1.3 0
C230
R245A R245
100/10V
C223 OPEN OPEN
1
C217
C216
Q207
0.1 10/50V
2SA1576UBTLQ
(SWITCHING)
R228
4.7K 8.6 8.6
*2
R227
C225
R229
47K R226 7.9
0.1
22K R230
330
10K
R243
240
*2
C224 R244
OPEN 2.2K
COLD
POWER SUPPLY CBA
B C
For continued protection against risk of fire,
replace only with same type 4 A, 125V fuse.
15.8
R239
8.2/1W
21.9
21.9 15.8
Q221 C220
C222
2SC2120-Y 470/25V
OPEN
16.0
(SW+15.8V) R236
9.1K
R247 Q214
R237
D222 R268A
100K
R270 C221 0 KTC3875S-Y-RTK/P
OPEN
1.5K 0.01
(SWITCHING)
2.2
0.7
R246 R240
3.9K 3.9K D221 R268
R238
0
KIA431-AT/P 39K
2.2K
D202
R266A R267
R266
OPEN 47K
47K
R643
47K
2.6
-3.5 R263
270 C228 R264
Q213
2.2/50V 15K
0 KTC3875S-Y-RTK/P
R263A
(SW-9.5V)
OPEN
-9.6
37.8 D208 Q212
-8.9
KTC3875S-Y-RTK/P
R255
Q210
R260 (SW+24V)
150
2SA1576UBTLQ -9.6
37.1 47K
(SWITCHING)
35.2
R255A
R261
D207 OPEN
22K
R252
39K
Q211
KTC3875S-Y-RTK/P
0.1 R253
(SWITCHING) 22K
0.7
R254 R258
0
22K 680
R257 R257A C227
R258A
47K OPEN
22/50V
OPEN
D639
R259
OPEN
R262
12K
R259A
OPEN
C231 C634
0.1 0.1
R657A
OPEN
R657
15 D657
24.0 6.4
C632
Q636
D655
1000/35V KTC3199-GR-AT/P
3V3BSB-T26 5.6
R645
(+5V REG.)
27K
R647 R660
27K WIRE
R662 R656 R658 R659
220 220 220 220
R662A R656A R658A R659A
OPEN OPEN OPEN OPEN
D656
5V6BSB-T26
R651
820
R652
18K
D636 D658 D659
OPEN OPEN
R232
10K
0.1
0.7
0 Q208 R231 C226
KTC3875S-Y-RTK/P 47K 3.3/50V
(SWITCHING)
D
10-3
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
CONTINUE
POWER 2
PANEL+15.8V
P-ON+3.3V
LCD-6V
LCD+24.5V
R265 R265A
8.2K OPEN
C229
OPEN
R248
56K
R241 D212
6.8K
R249
6.8K
D211
R242
2.7K
CONTINUE
POWER 3
D210
5V1BSB-T26 +24V
D652
TO DIGITAL MAIN
CN632 CBA UNIT CN3701
24.2
0
19 GND
24.8
0
R256 18 GND
WIRE
24.0
17 P-ON+24V
24.0
16 P-ON+24V
0
15 GND
24.4
14 AMP+24V
24.4
C635 13 AMP+24V
D205
0.1
33BSB-T26 0
12 GND
5.7
D206
11 AL+5V
0
C636
10 GND
0.1
0.6
9 OE2
D663 2.6
8 RESET
R664 10K
3.4
7 P-ON-H2
3.3
6 P-ON-H1
D641
3.1
5 PROTECT1
3.1
D632
4 PROTECT3
5V6BSB-T26
0.7
3 BACKLIGHT-ADJ
0.9
2 BACKLIGHT-SW
D638 1.6
1 VCOM-PWM
10BSB-T26
R634 R634A
WIRE OPEN
R641 CONTINUE
R633 R633A
22K POWER 2
WIRE OPEN
PROTECT3
VCOM-PWM
OE2
P-ON-H1
P-ON-H1-1
CONTINUE
POWER 3
BACKLIGHT-SW
C646
D635
BACKLIGHT-ADJ
100/10V
1ZB7.5BB
PROTECT3
D633
5V6BSB-T26
D651
2 NOTE
You cannot mix components under Type 1 with
the ones under Type 2.
Refer to Parts List of LC320EM2(Serial No.: DS1).
1.6
0.1
0 Q632
KTC3875S-Y-RTK/P R638
22K
(SWITCHING)
UNLESS OTHERWISE SPECIFIED:
DIODES ARE 1SS133.
E
Type 1 Type 2
IC202 KIA78R000ZF-RTF/P PQ200WNA1ZPH
1.4k 330
R226
2.2k
R244 1k
F
FL11.4SCM1