Asus VB191T Service Manual page 27

19" LCD Color Monitor
+5V +12V
CN701
3,4 +5V
1
2
3
4
5
6
7
8
9
C702
CONN C701
+ +
100uF 50V
100uF/25V
+5V
R708 R710
10K 1/16W 10K 1/16W
R711
R709 51K
Q704
4 on_Panel
4K7 1/16W PMBS3906
C709
0.1uF/16V
The type of R712 is 0603
+5V VCC3.3
NC
R720
R701 1K 1/16W
20070105JENNY
+12V 4
R702
47R 1/16W
R703 4K7 1/16W
C703
NC（1uF 10V）
Q701
+5V VCC3.3
PMBS3904
R716
R717 NC
NC
R715
C713
NC Q705
NC
C704
0.1uF/16V
VLCD
5 VLCD
Q703
+5V
AO3401
C710
1/16W
0.1uF/16V
+ C711 R712
10uF/50V
10KΩ 1/10W
The type of R713 and
+5V
D701
3,4 +5V
SMAL140
Adj_BACKLIGHT 4
R706
R721 NC
NC
20070105JENNY
NC
Adj_BL2 4
+5V
layout for C verison
To solve white flash after AC OFF
R704
R718
10K 1/16W 10K 1/16W
R705 4K7 1/16W
on_BACKLIGHT
Q702
PMBS3904
27
R714 are 1206
SOT-223
R707 NC
VCC3.3
U701
3 2
VI VO
+ C706
10uF/50V
SOT-223
VCC1.8
U702
3 2
VI VO
C707 C708
+
10uF/50V
0.1uF/16V
4
Title
Size Document Number
B
Date: Saturday , April 14, 2007
ASUS VB191T&S
VCC3.3 4
The Current of VCC3.3 ( with
support 1.8V) is arround
382.6mA. U702 is n't safe to
use 1117 SOR223.
The Current of VCC3.3 (
without support 1.8V) is
arround 196.6mA. U702 is
safe to use 1117 SOR223.
VCC1.8 4
The Current of VCC1.8 is
arround 184.9mA. U? is safe
to use 1117 SOR223.
2.Power
Rev
A
715G2571 1 2
Sheet 2 of 6