9-6
Power Supply Block Diagram
PL10.10BLP
DIGITAL MAIN CBA UNIT
HOT COLD
MAIN CBA
HOT CIRCUIT. BE CAREFUL.
T601
6
4
5
12
8
7
9
10
11
2
1
3
FEED
BACK
Q631
CN301 CN3701
Q202,Q203
SWITCHING
Q402
Q634
IC631
+3.3V
REG.
23
Q633
Q638,Q639
Q635,Q636
SW+5V
Q637
SW+5V
Q641
SW+9V
Q206
4A/125V
P-ON-H1
VCOM
TO SYSTEM
CONTROL
BLOCK
DIAGRAM
P-ON-H2
+5V REG.
PROTECT1
SWITCHING
Q643
SW+3.3V
P-ON+5V
AL+3.3V
SP+14V
TUNER+5V
P-ON+9V
P-ON+3.3V
+24V
19,20
21,22
14
P-ON+3V
P-ON+7V
AL+3.3V
P-ON+3.3V
P-ON+5V
P-ON+3.3V19,20
AL+3.3V21,22
16
10
P-ON+7V16
P-ON+3V10
P-ON+5V14
+31V
8
LINE
FILTER
L601
CN601
AC601
AC CORD
BRIDGE
RECTIFIER
D601- D604
Q601
SWITCHING
F601
4A/125V
Q603
SWITCHING
IC602
ERROR
VOLTAGE DET
SWITCHING
CONTROL
VH
1
ZCD
5OUT
2
FB
3
IS
6VCC
IC601
14
3 2
2
1
IC621
+3.3V REG.
IC201
+12.5V REG.
Q403
Q642
CN201
LCD MODULE ASSEMBLY
PANEL+25.6V4
P-ON+3.3V6,7
PANEL-5.6V8
PANEL+12.5V2,3
VCOM10
Q210
SW-8.5V
SW+25.6V
Q204
Q205
Q215
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.
For continued protection against risk of fire,
replace only with same type 4 A, 125V fuse.
CAUTION ! :
ATTENTION : Utiliser un fusible de rechange de même type de 4A, 125V.
4A/125V
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
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