9-4
4. Power Supply Block Diagram
PL11.9ABLP
LCD MODULE
ASSEMBLY
HOT COLD
HOT CIRCUIT. BE CAREFUL.
CN1601
1
2
AC601
AC CORD
AC
INLET
LINE
FILTER
L1601
LINE
FILTER
L1602
T1201
BRIDGE
RECTIFIER
L1604
DRAIN
VCC
VDD
FB
TO SYSTEM CONTROL
BLOCK DIAGRAM
POWER SUPPLY CBA
FRC CBA UNIT
DIGITAL MAIN CBA UNIT
P-ON+12V
F1601
4A/250V
5
7
9
10
1
2
4
6
3
2
5
11
8
T1701
3
6
15
16
14
13
12
11
10
9
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
11612
14
L1603
2
5
11
8
HIGH-
VOLTAGE
RESONANT
CONTROL
8
8
12
13
2
18
14
9
5
4
IC1703
(ISOLATOR)
Q1705
Q1703
Q1704
Q1404
Q1403
Q1402
Q1401
Q1707
CN1914
CN1913
CN1801 CN5002
CN3101
PANEL+24V1-5
AL+5V
6
P-ON+12V
11,12
1,2
6
13,14
CN1801
P-ON+12V
13,14
P-ON-H1
BACKLIGHT-ADJ
BACKLIGHT-SW
Q1706
PANEL+24V1-5
BACKLIGHT-ADJ
13
BACKLIGHT-SW
12
5
1
2
4
D1601
AL+5V
P-ON+12V
1
4
3 2
1
4
3 2
1
4
3 2
4A/250V
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 (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 4A, 250V fuse.
CAUTION ! :
ATTENTION : Utiliser un fusible de rechange de même type de 4A, 250V.
4A 250V
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