Acer AL707 Service Manual - Page 45

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Acer AL707 Service Manual
MCU Block
HDATA0
MFB7
MFB8
MFB9
HCLK
HFS
BKLT-PWM
VOL
C316
R302
10 K
22 uF
GND
RXD
TXD
IRQ
MFB2
+5V
SDA
SCL
RST1
/VGA_CON
C313
D301
22 uF
1N4148
RST
C303
R313
33 pF
10 K
GND
GND
+A5V
R300
R301
U300
10 K
10 K
8
VCC
C300
SDA
5
SI
0.1 uF
7
WP
1
A0
SCL
6
2
SCK
A1
3
A2
4
VSS
24LC04B
GND
8XC51/PLCC
U302
2
T2/P1.0
P2.0/A8
3
T2EX/P1.1
P2.1/A9
4
P1.2
P2.2/A10
5
P1.3
P2.3/A11
6
P1.4
P2.4/A12
7
P1.5
P2.5/A13
8
P1.6
P2.6/A14
9
P1.7
P2.7/A15
RST
10
RST
PSEN
ALE/PROG
11
RXD/P3.0
13
TXD/P3.1
P0.7/AD7
14
INT0/P3.2
P0.6/AD6
15
INT1/P3.3
P0.5/AD5
16
TO/P3.4
P0.4/AD4
17
T1/P3.5
P0.3/AD3
18
WR/P3.6
P0.2/AD2
19
RD/P3.7
P0.1/AD1
P0.0/AD0
R340
20
XTAL2
X300
R341
0
EA/VP
21
XTAL1
TEST(OP)
20MHz
C306
33 pF
+5V
R333
PS3
2 K
JP303
R
JP302
R315
/BKLT-ON
R(OP)
10 K
GND
+5V
R431
10 K(OP)
(Panel-Select)*　　
24
PS3
25
26
27
PW5V-ON
28
29
/BKLT-ON
R321
R323
30
31
0 (OP)
0 (OP)
32
33
GND
36
KEY1(ORANGE?)
37
38
KEY2(GREEN?)
RP301
39
8
1
40
7
2
41
6
3
42
5
4
43
4.7K Ohm
+A5V
44
R303
VCC
35
+5V
4.7K
C305
C304
100uF
0.1 uF
+12V
+5V
C403
C944
100uF
R311
0.1 uF
CN303
10 K
1
GND
2
3
4
MMBT3904
5
1
Q304
+5V
HEADER 5
GND
GND
R401
VR501
W
BKLT ADJ
10 K
0(OP)
GND
GND
2
R238 0(OP)
R319
K/E Select
1
1
2
KEY
2
R325
GND
+5V
0 (OP)
R328
R329
10 K
10 K
CP301
CP302
1000 pF
1000 pF
GND
VOL
MUTE
STDBY
+5V
R403
4.7K(OP)
R402
BKLT-PWM
C401
1K(OP)
100uF(OP)
ACER Electronics Co., Ltd.
Title
Size
Document Number
B
Date:
Monday, October 21, 2002
+5V
+5V
R239
R235
4.7K(OP)
4.7K(OP)
MUTE
STDBY
Q201
R237 0(OP)
1
R236 10 K(OP)
MMBT3904(OP)
GND
CN302
GND
1
2
3
C951
4
5
CAP(OP)
6
7
8
9
+5V
HEADER 9
MUTE
C954 1000PF(OP)
STDBY
C955 1000P(OP)
GND
GND
+12V
+12V
CN304
1
2
C953
3
4
CAP(OP)
5
6
GND
HEADER 6
MICRO CONTROLLER
Rev
715L820-2-2
A
3
6
Sheet
of