Supply Voltage Overview - Philips 20MF251W-27 Service Manual

Block Diagrams, Testpoint Overviews, and Waveforms

Supply Voltage Overview

D P O W E R S U P P L Y
D B 1 - 4
A C
D C
I C 0 2
L 1
L 2
F 1
3
1
I C 2
2
I C 3
4
FEED B.
C Z 1
100V - 240V
SHA2.0U LA
D 1 1
T 2
RECTIFIER(5.7V)
D 1 1
12
8
RECTIFIER(24V)
4
7
11
14
3,4,5
6
D 1 2
15
9
RECTIFIER(12V)
4,5
10
REG(2.5V)
7
3
1
I C 0 3
6. EN 23
L 4
LPF
5.7V
D 0 9
24V
Q 3
CONTROL A
POWER_ON
L 5
D 0 8
LPF
12V
Q 4
CONTROL B
L N 2
1 2 V
T O D V D
H V b o a r d
E
2 4 V F 1
2 4 V
5 V 7 _ U V
L N 3
N 4
M C U + 5 V
B A 5 0
( T O N 9 )
N 2 1
A Z 1 0 8 6
N 1 6
M P 1 5 8 0
N 3 0
M P 1 5 8 0
A M P _ 1 2 V
( T O N 8 )
L N 2
N 2 6
A O 4 8 0 1
- 5 V C C A
U 2
T P S 6 0 4 0 0
N 3 5
N J M 4 5 8 0
5 V C C A
N 3
B A 5 0 B C 0
V 5 A 1
N 1
M S P 3 4 2 0 G L 5 0
V C C _ 1 V 8
N 6
N 1 4
A Z 1 0 8 6
T V P 5 1 4 7
5 V
N 5
T O T V F 1
B A 5 0 B C 0
T V T U N E R
A
M A I N B O R A D
I C + 1 V 8
( T O N 1 0 )
5 V 5 _ 3 V 3
( T O N 1 4 , N 1 0 )
L V D S _ 5 V
L C D T F T
V L C D
( T O L C D T F T )
5 V 5 _ O U T