2-3
10K
R122
Z101
220V
2
+12V
D202
2080
1
C114
4
3
2
1
U102
0
R110
470P
C213
OPEN
C104
18V
ZD201
4
GND
33V
Z303
5
+5V
1K
R205
LF102
LINE
FILTER
3
GND
1000P
/1KV
C215A
ZV103
DSPL-301M
U103
TL431
510K
R108
5
GND
0.47
CX101
CN1
AC CORD
OPEN
C404
43K
R407
6
GND
68/63V
C403
4148
D203
10K
R307
1
C102
OPEN
R217
20
R204
CN3
1
+12V
10V
Z109
18V
Z305
680/25V
C211
D304
KDS184
1N4007
D201
270K
R102
4
3
2
1
U301
2222
Q304
470/35V
C413
10K3
R419
OPEN
CY107
1000P
C406
24V
Z106
Q401
25A80V
G
D
S
27K
R212
1
C408
6
+5V
18K
R207
510K
R405
110K
R106
2
LED1
10
/50V
C202
3
NU
22
/50V
C108
270K
R101
Q101
30A/40V
G
D
S
4.7
R109
LB402
BEAD
OPEN
Q102
20
R203
22K
R208
100K
R313
OPEN
Z108
4
BACKLIGHT-ADJ
OPEN
CY105
1K
R302
1
R414
U202
TL431
CN1
1
1K
R115
8
+5V
4.7K
R220
2
AMP+24V
2A/250V
F102
1
LED2
KTD1347
Q301
OPEN
R218
0.1/2W
R404
100K
R413
10K
R219
1N4148
D301
510K
R406
1K
R114
1000P
CY102
3
BACKLIGHT-SW
20
R113
10K
R309
10
/50V
C103
220P
C111
3
GND
0.1
C302
4
GND
LB401
BEAD
15V
Z304
22/50V
C307
RT101
2.5D15
OPEN
C105
OPEN
R216
OPEN
R215
270K
R101
470/35V
C207
3K
R409
2
220P
C205
OPEN
Z302
SR210
D401
470K
R303
OPERN
C110
1
2
3
4
5
6
U201
GR8833
D303
OPEN
P6KE180A
Z201
OPEN
C405
1K
R306
18K
R418
1000P
C107
1000P
C412
220P
C201
ZV104
DSPL-301M
0.18/3W
R211
1000P
C401
220V
Z102
LF101
LINE
FILTER
1N4007
D101
Q201
10N65
G
D
S
470K
R305
RV101
14D561
1K
R312
100K
R415
0.47
C109
OPEN
C305
PR1004
D102
680/25V
C209
1000P
/1KV
C215
0.47
C410
Q303
2907
0.47
C212
1
C409
1K
R304
1K
R417
2222
Q302
0.1
C204
68K
R209
1
C304
1000/10V
C112
OPEN
C116
5.1M
R105
ZV101
DSPL-301M
10K
R117
OPEN
R120
18K
R116
680/25V
C208
CN4
7
LED3
OPEN
Z301
20
R201
4.7K
R311
10
R202
9
GND
13
1
15
14
16
3
6
5
11
4
7
12
10
8
9
2
U401
OZ9998B
1K
R402
6
LED4
PR1004
D103
1000/10V
C113
LF103
LINE
FILTER
1N5408
D112
2
PS-ON
10 +12V
1000/10V
C115
5.6K
R410
360K
R411
4.7
R301
9.53K
R118
0.1
C210
430K
R408
OPEN
R112
4
3
2
1
U203
CN5
1
AMP+24V
SB5100
D204
5
NU
474K
C411
150
/450V
C101
1K
R206
0.1
C203
1K
R412
5.1M
R104
BD101
4A600V
OPEN
CY108
OPEN
R308
4
LED-VCC
10K
R403
10
R401
ZV102
DSPL-301M
1000P
C407
470
R210
OPEN
R119
1
2
3
4
5
6
7
8
U101
0170
OPEN
R121
T5A L 250V
F101
470P
C303
100P
C402
OPEN
C214
OPEN
R214
91K
R107
7
+5V
CN2
1
STB+5V
1K
R416
OPEN
R123
SB560
D104
4.7V
Z107
0.1
C106
10
R111
5
1
7
2
9
4
3
8
10
11
12
T201
POWER TRANS
1
6
B
5
A
2
3
T101
POWER TRANS
1000P
CY101
1000P
CY103
1000P
CY104
0.47
CX102
OPEN
CY106
SB5100
D204A
470/35V
C206
L202
1.5uH
L401
40uH
L201
1.5uH
2K
R213
470K
R310
1000P
C306
L101
1.5uH
SB560
D104A
OPEN
R124
P6KE180A
Z105
(FEED BACK)
(SHUNT REG.)
(SHUNT REG.)
TO LCD PANEL
ASSEMBLY
1
2
3
4
A
B
C
D
(FEED BACK)
E
F
(ISOLATOR)
POWER SUPPLY CBA UNIT
HOT
COLD
HOT CIRCUIT. BE CAREFUL.
(SWITCHING)
VCC
COMP
OUT
CT
CS
GND
VFB
DRV
DRV
GND
VCC
VIN
VSTR
DRV
(SWITCHING)
(SWITCHING)
TO DIGITAL MAIN
CBA UNIT CN24
(SW+5V)
(SWITCHING)
(SWITCHING)
(SWITCHING)
OVP
DRIVE4
VREF
GND
(LED BACKLIGHT DRIVER)
SSTCMP
VIN
RT
STATUS
ISET
DRIVE1
(SWITCHING)
TO DIGITAL MAIN
CBA UNIT CN3
TO DIGITAL MAIN
CBA UNIT CN2
DRIVE2
DRIVE3
CONTROL
LOGIC
SWITCHING
CONTROL
SWITCHING
CONTROL
A23FASCP
Power Supply Schematic Diagram
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F101) 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.
CAUTION !
For continued protection against fire hazard,
replace only with the same type fuse.