9-5
5. Power Supply Block Diagram
HOT COLD
CN601
B
W
L602
L601 T601
T1602
F602
2.5A/250V
1
3
5
6
10
11
9
8
2
1
4
8
5
IC602
14
3 2
Q1602
SWITCHING
Q1601
VCC
SWITCHING
IC1601
7
11
11612
14
T1601
1
4
8
5
8
IC1602
Q691
Q1607
Q1604
14
3 2
Q692
CN3601
P-ON+20V
18-27
AL+3.3V6 6
18-27
CN651
Q652
Q657
Q658
P-ON-H2
RESET
RESET
Q653
RESET
Q651
Q1004,Q1005,
Q1006
D601-D604
AL+3.3V
P-ON+20V
P-ON+20V
2.5A 250V
FB
Q601
SWITCHING
IC601
2
CS
3
OUT
5
VCC
6
ACMONI
1
TO SYSTEM
CONTROL
BLOCK
DIAGRAM
LINE
FILTER
LINE
FILTER
BRIDGE
RECTIFIER
SWITCHING
CONTROL
(ISOLATOR)
POWER SUPPLY CBA
ERROR
VOLTAGE DET
IC651
SHUNT
REGULATOR
DIGITAL MAIN CBA UNIT
HOT CIRCUIT. BE CAREFUL.
AC601
AC CORD
(SWITCHING CONTROL)
SWITCHING
CONTROL
SW+20V
NI
N2
VLED1
VLED2
Q1701
SWITCHING
Q1702
Q1704
SWITCHING
TO LED
BACKLIGHT
DRIVE
BLOCK
DIAGRAM
T1702
5
4
2
1
8
9
7
10
1
4
2
5
10
6
T1701
Q1703
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
For continued protection against risk of fire,
replace only with same type 2.5A, 250V fuse.
CAUTION ! :
ATTENTION : Utiliser un fusible de rechange de même type de 2.5A, 250V.
2.5A 250V
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F602) 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.
PL17.06BLP
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