6-5
Power Supply Block Diagram
L0305BLP
4A/125V
F601
4A/125V
LINE
FIL
TER
L601,L602
A
C601
A
C
CORD
BRIDGE
RECTIFIER
D605 - D608
HO
T
COLD
T602
15
12
14
16
11
9
7
4
3
1
2
IC601
ERR
OR
V
O
LT
A
GE DET
MAIN CB
A
NO
TE :
The v
oltage f
or par
ts in hot circuit is measured using
hot GND as a common ter
minal.
CN101A
CN101B
Q505
Q504
Q503
HOT CIRCUIT. BE CAREFUL.
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
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.
5
3
2
P
ANEL+25V
73
P
ANEL+13.9V
55
P
ANEL-6V
37
P
ANEL+25V
P
ANEL+13.9V
Q511
Q502
Q501
+1.8V
REGULATOR
IC503
+3.3V
REGULATOR
IC504
RESET
IC505
REG+5V
P-ON+3.3V(D)
P-ON+1.8V(D)
PR
O
TECT
-1
P-ON+3.3V(A)
AL+33V
AL+12V
P-ON-H
P-ON-L
Q508
Q513
Q512
Q507
Q633
LCD MAIN CB
A UNIT
D649
P
ANEL+3.3V
19
AL+5V
91
P
ANEL+3.3V
AL+5V
PR
O
TECT
-2
IC603
+5V
REGULATOR
T
O
SYSTEM
CONTR
OL
BLOCK
DIA
GRAM
T
O
A
UDIO
BLOCK
DIA
GRAM
10
13
IC502
+3.3V
REGULATOR
CLN481
T
O
SYSTEM
CONTR
OL
BLOCK
DIA
GRAM
BA
CKLIGHT
-SW
BA
CKLIGHT
-ADJ
IC601
ERR
OR
V
O
LT
A
GE DET
Q601
Q603
SWITCHING
CONTR
OL
SWITCHING
P
ANEL-6V
D505
Q510
Q506
VR649
+21V
TP401
+21V
Q509
Q83
Q82
Q81
LED+5V
+21V
22
INVER
TER CB
A
CN481
+21V
11
+21V
33
BA
CKLIGHT
-SW
88
BA
CKLIGHT
-ADJ
99
PR
O
TECT
-1
10
10
T
O
LCD
BA
CKLIGHT
BLOCK
DIA
GRAM
BA
CKLIGHT
-SW
BA
CKLIGHT
-ADJ
PR
O
TECT
-1
+21V
Содержание F20LCTE
Страница 1: ...20 COLOR LCD TELEVISION F20LCTE SERVICE MANUAL...
Страница 13: ...4 2 L0305DC S 1 S 1 S 1 S 1 S 1 S 1 S 2 1 Rear Cabinet Fig D1...
Страница 32: ...A1 A2 B1 B2 C1 C2 Function Schematic Diagram L0305SCF 7 13 7 14...
Страница 33: ...A1 A2 B1 B2 C1 C2 7 15 7 16 L0305SCIR IR Sensor Schematic Diagram...
Страница 57: ...F20LCTE L0305UF 2004 09 21...