Acer XB270HU

1. Schematics and Layouts
1.1 Schematics
Main Board
715G7388M0B000006N
02. System Power
+2.5V _UC
+2.5V_UC
ON/OFF_IN
DIM
+
C702
220UF 35V
+
C703
220UF 35V
CN710
CONN
1
2
3
4
5
6
7
8
CN708
NC/CONN
1
2
3
4
DIMIN
PS_ON1
+
C758
470UF 25V
CN709
CONN
1
2
3
R709 change t o NC -
20140127
R764
47K
Q705
LMBT3904LT1G
R763 10KR765 10K
R733 change t o NC ; R734/R735 10K _ohm ;
Q702 3904 - 20131211
PS_ON 6
CN710 change t o 8pin - 20140106
GND
GND
GND
GND
GND
GND
GND
GND
C727 change t o NC -
20140128
Q704
LMBT3904LT1G
PS_ON1
ON/ OFF
GND
GND
GND
GND
GND
BL_ENABLE_N
PWR_GRP_2_ENABLE
PWR _GRP_2_ENABLE
PWR _GRP_2_ENABLE
GND
+
C718
470UF 25V
+ C719
470UF 25V
+5V
GND
GND
GND
GND
GND GND
L703
3.3UH
+19V
R760
10K
BL_PWM
R761
NC/0R05 OHM
R762
4.7K1/16W
R759
100OHM
R710
12K +-1% 1/ 16W
C714
1uF 2 5V
R724
NC/91K 1%
C707
100NF 25V
PS_ON
R714
20K 1/16W
C731
22UF
C742
22UF
C722
NC/100PF 50V
U703
MP2 315 GL
AAM
1
IN
2
SW
3
GND
4
BST
5
EN/SY NC
6
VCC
7
FB
8
R726
100K 1/10W 5%
R718
10K 1/ 10W 1%
R712 0R05 1/4W
R742
40.2K 1/16W 1%
R729
33K 1%
R721
NC
C723
NC/1nF 50V
R703
1.5R
FB707
600OHM
L702
4.7uH 32mOHM 5.5A
R737
0R05 OHM
R728
NC
C725
NC
R727
12.4K 1%
IN
4,10
R701
430K 1%
C727
NC/ 10UF 25V
C729
100N 16V
R734
10K
R730
NC/0R05 OHM
C735
100N 16V
R744
20R 5% 1/16W
R705
NC
VBUS_DETECT
R731
20R 5% 1/16W
R715 0R05 1/4W
C716
10UF 25V
R738
NC/91K 1%
R743
NC/0R05 OHM
+2.5V _UC
R708 1K 1/16W 5%
C706
10UF 25V
Q702
LMBT3904LT1G
R713
2.7K 1%
C726
NC
C734
100N 16V
GND
R702
100K 1/16W 5%
U701
G5312QN1U
TON
24
V5V
3
PGND
4
VCC
26
VN
20
VN
19
VN
18
VN
17
AGND
2
BST
22
LX
5
LX
6
LX
7
LX
8
LX
9
LX
10
PGND
11
PGND
12
PGND
13
PGND
14
PGND
15
PGND
16
OUT
25
FB
27
PGOOD
28
ILIM
1
EN
23
AGND
29
R716
27K 1/16W 1%
R774 NC/ 10K
R706
NC/20K
R740
100K 1/10W 5%
U702
MP2 315 GL
AAM
1
IN
2
SW
3
GND
4
BST
5
EN/SY NC
6
VCC
7
FB
8
C717
10UF 25V
C730
22UF
L701
4.7uH 32mOHM 5.5A
C733
10UF 25V
C705
10UF 25V
C741
22UF
C728
100N 16V
R735
10K
R711
20K 1/16W
R741
18.2K OHM +-1% 1/16W
R722
0R05 OHM
C704
10UF 25V
R707
100K 1/16W 5%
R736
10K
R709
NC/10K
GND
FB702
120R 6A
C732
22UF
R717 0R05 1/4W
Q701
NC
32
1
R704
10 OHM 1%
R720
10K
C720
NC
FB703
120R 6A
R723
470OHM +-5% 1/10W
R732
40.2K 1/16W 1%
R733 NC/0R05 O HM
C721
1N 50V
R745
40.2K 1/16W 1%
R719
4K7 1/16W 1%
C715
NC/0.01uF 25V
C740
22UF
3V3 5
+5V 12
+19V
2V5 5
+5V
VBUS_DETECT-1
+5V
+5V
+5V
+5V
2V5
3V3
3V33V3
+19V
14.7K
2V5
+5V
IN
4,10
IN
4,10
VBLCTRL 2
BRI_ADJ-PW M0 2
R739
62K 1/16W 1%
R725
62K 1/ 16W 1%
18.7K
12.7K
Value change t o: MP2315GL f or All egro
Val ue change t o: MP2315GL f or All egro
IN
2
IN
2
4.99V
2.53V
3.34V
GND
GND
GND
GND
D703
SR34H
12
Dele t e C724 - 20140107
A dd D703/C736 -
20140114
C736
2.2UF
R758
10K
+5V
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