9-6
PL10.5BLP1
Power Supply 1 Block Diagram
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F1601) 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.
For continued protection against risk of fire,
replace only with same type 8A, 250V fuse.
CAUTION ! :
ATTENTION :
Utiliser un fusible de rechange de m
ê
me type de 8A, 250V.
8A 250V
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
LCD MODULE
ASSEMBL
Y
HO
T
COLD
HOT CIRCUIT. BE CAREFUL.
CN1601
1
2
AC
6
0
1
A
C
CORD
AC
INLET
LINE
FIL
TER
L1601
LINE
FIL
TER
L1602
T1201
BRIDGE
RECTIFIER
D1201-D1204
BRIDGE
RECTIFIER
L1604
DRAIN
VCC
VDD
FB
T
O
SYSTEM CONTR
OL
BLOCK DIA
GRAM
PO
WER SUPPL
Y
CB
A
AL+4.3V
+345V
HO
T+20V
F1601
8A/250V
5
7
9
10
1
2
4
6
3
2
5
11
8
T1701
8
7
5
3
4
2
1
10
9
11
12
13
14
15
16
IC1202
1
4
3
2
IC1201
(SWITCHING)
Q1602
SWITCHING
Q1601
VCC
SWITCHING
(FEED BACK)
RL1201
Q1202
Q1201
Q1701
SWITCHING
Q1702
SWITCHING
IC1705
(ISOLATOR)
IC1704
(FEED BACK)
IC1401
(SWITCHING CONTROL)
IC1702
HIGH-VOLTAGE
RESONANT CONTROL
SWITCHING
CONTROL
7
11
1
16
12
14
L1603
2
5
11
8
HIGH-
VOLTAGE
RESONANT
CONTROL
8
8
12
13
2
14
9
5
4
1
4
3
2
1
4
3
2
IC1703
(ISOLATOR)
Q1705
Q1703
Q1704
Q1404
Q1403
Q1402
Q1401
Q1707
Q1708
1
4
3
2
CN1914
P
A
NEL+24V
1-5
P-ON-H2
P-ON-H1
PR
O
TECT3
BA
CKLIGHT
-ADJ
BA
CKLIGHT
-SW
Q1706
BA
CKLIGHT
-ADJ
13
BA
CKLIGHT
-SW
12
5
1
2
4
PO
WER-RESET
T
O
SYSTEM CONTR
OL
BLOCK DIA
GRAM
D1607-D1610