LG LH-CX640 Series Service Manual page 37

3-21 3-22
2.
POWER(SMPS)
BLOCK
DIAGRAM
2
FD(+)
FD(-)
-29VA
GND
33VA
GND
13VA
GND
3.8VA
3.8VA
GND
5.3VA
5.3VA
GND
GND
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
TO SYS
FD(+)
TO SYS
FD(-)
TOSYS
-29VA
TO
TU
33VT
TO SYS
5.3VA
TO TU/SYS/ Hi-Fi
5.2V
TO AVCP
REG
5VT
TOSYS
TIMER 'H'
FROM
\316\274-COM
PWR
CTL
'H'
PMS01
5.3VA
5.0VA
8V
GND
9V
A.GND
3.5VA
5V
GND
3.3V
A.GND
GND
1
2
3
4
5
6
7
8
9
10
11
12
PMD03
33VT
BLOCK
(Q163,
Q164,
R168,
R169,
R170)
8V
BLOCK
(IC160,
D163,
C163, R161)
9V BLOCK
(Q162,R171,
ZD163,C175)
3.5V
BLOCK
(IC161,
D164, C173)
3.3V
BLOCK
(IC162, R172,
C165)
REG 5V
(Q166,
C166, C167,
R174, ZD161)
5V BLOCK
(IC163,
C177)
5.2V
BLOCK
(Q167,
C168,
R175,
R176, R177)
PWR CTL BLOCK
(Q169,
C 170,
R181,
R182, R183)
5V BLOCK
(Q168,
R 178,
R179,
R180, C169)