Zenith XBS344 Series Service Manual page 31

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
33VT BLOCK
(Q163, R168,
R169, R170)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
PVS01
REG 5V
(Q166, C166, C167,
R174, ZD161)
12VT BLOCK
(IC164, C162, R171)
8V BLOCK
(IC160, D163,
C163, R161)
3.3V BLOCK
5V BLOCK
(IC161, D164, C173)
(Q168, R178, R179,
R180, C169)
2.5V BLOCK
(IC162, D165, C172)
5.2V BLOCK
(Q167, C168, R175,
R176, R177)
PWR CTL BLOCK
(Q169, C170, R181,
R182, R183)
3-20 3-21
TO SYS
FD(+)
TO SYS
FD(-)
TO SYS
-29VA
TO TU
33VT
TO TU
REG 12VT
PVD01
1 5.3VA
2 8V
3 GND
4 REG 12VT
5 3.3V
6 3.3V
7 5V
8 5V
9 GND
10 2.5V
11 GND
12 GND
TO SYS
5.3VA
TO TU/SYS/ Hi-Fi
5.2VA
FROM µ-COM
PWR CTL 'H'
TO AVCP
REG 5V
DT-65780M's