Schematic Diagram; Chapter 7 Schematic Diagram; Main Board - Acer B243W Service Manual

Schematic Diagram

Main Board

POWER INPUT
CN701
1 +12V
2 +12V
3 +12V
4 GND
5 +5V
6 +5V
7 +5V
8 GND
9 GND
10 GND
11 ON_OFF
12 Dimming
13 PS_ON
14 GND
CONN
PANEL_EN
POWER ON LOW
POWER OFF
HI
R714
NC
6 PANEL_EN
R717
4K7 1/10W 5%
FOR USB POWER
6
+12V
+12V 6
REV:C
+
NC C701 NC C702
1000uF/16V 0.1uF
+5V
+5V 3,6
REV:C
+
+5V
C705
1000uF/16V
POWER ON
REV:C
R701 POWER SAVING
POWER OFF
10K 1/10W 5%
Q701
REV:C
2N3904S-RTK/PS
C727
0.1uF R702
4K7 1/10W 5%
+5V
R703 REV:C
10K 1/10W 5% R704
1K 1/10W 5%
R705
C709 4K7 1/10W 5%
BKLT-EN 6
0.1uF Q702
2N3904S-RTK/PS
+5V
R706
1K 1/10W 5%
REV:C
R707
1K 1/10W 5%
Q703
REV:C 2N3904S-RTK/PS
NC C713
22uF 16V R708
4K7 1/10W 5%
+VLCD
+5V
REV:C Q705
R710
R711 100K 1/10W 5%
10K 1/10W 5%
REV:C
R712
100K 1/10W 5%
AO4403
C718
Q706 0.068uF
2N3904S-RTK/PS
Q707
2N3904S-RTK/PS Q708 NC C721
2N3906S-RTK/PS /NC 0.22uF /NC
C723
NC
+12V
+
C724
NC
5
4
USB CTRL 3
USB_CTRL
2
1
CN702
NC
REV:C
PS_ON/OFF BKLT-PWM
LOW LOW
HI HI
HI HI
PS_ON/OFF 6
BKLT-PWM 4
+5V
+VLCD 7
+5V
45
+3.3V
+3.3V 4
FOR SCALER POWER
FB701
+5V U701 120 OHM
3 2 1
VIN VOUT
1
ADJ
REV:C
+ C706 AIC1084-33PM C707 C704
SOT-263
C703 0.1uF 0.1uF
22uF 16V
1000uF/16V
+5V
+3.3V_SD
SOT-252
U702
3 2
Vin Vo2
REV:C
C710 C712
C708 AIC1084-33PE 22uF 16V 0.1uF
0.1uF
Q704 L701
AO3401 22uH
D701 R709
SSM54PT 22R 1/10W 5%
U703 C716
8 4 0.001uF
VIN FB
7 3
PGATE N.C
R713
33K 1/10W 5% C719 6 2
PWGND AGND
0.001uF
5 1 R716
ADJ ISENSE
15K 1/10W 5%
LM3485
R719
31.6K
Chapter 7
VCPU
2
VCPU 6
+3.3AVDD
+3.3AVDD 4
+3.3V_SD 4,5
+1.8V
+1.8V 4
REV:C
+ C714 C715
0.001uF
470UF 16V
C720
0.001uF
1% 1/10W