Acer B173 - Page 44

A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
TO BUTTON BOARD
Junction from
A change to B
Reset circuit
2005/09/30
R24 R25
CN2
CN3
*Co-lay CN3/CN2 note:
NC NC
1K 1K
(PWR_SEL)
3
E
C
21
B
MMBT3906
2007.11.22 pin define modify
R1
UP_O
G1
MENU_O
DOWN_O
PWR_O
KEY2
KEY1
KEY1
RST
EEPROM_WP
RIGHT_O
KEY2
KEY1
LEFT_O
KEY3
IICSDA
IICSCL
KEY2
KEY1
PWR
LED_R
LED_G
IICSDA
EEPROM_WP
SEL_O
DDC_WP
KEY1 KEY2 PWR
KEY3
IICSCL
HOTKEY_M
HOTKEY_M
LED_G
KEY2
LED_R
PWR
HOTKEY_M
RST
MENU_O
SEL_O
PWR_O
UP_O
DOWN_O
RIGHT_O
LEFT_O
R1
G1
DDC_SCL
DDC_SDA
DDC2_SDA
VOLUME
DDC2_SCL
STBY
XI
VRMT
PANEL_PW12
RTD_SCLK
RTD_SD3/SDI
VBRI
Hot_Plug
DVI_DET
DSUB_DET
DDC_WP
MCU_VCC
3DVCC
MCU_VCC
MCU_VCC
MCU_VCC
MCU_VCC
5DVCC
5DVCC
MCU_VCC
R12
10K/6
R44 4.7K/6/NC
R168 100/6
R52
4.7K/6
R163 100/6
R170 4.7K/6
R54 100/6
D29
DAN217K
21
3
R25 10K/6
R53
4.7K/6
R56 100/6
C7
0.1u/6
R33
4.7K/6
R22 4.7K/6
R49 4.7K/6
R48 4.7K/6
D30
DAN217K
21
3
R16
82K/6/NC
R23 4.7K/6
R191 NC/4.7K/6
D37
NC/DAN217K
21
3
R190 NC/1K/6
R36
4.7K/6
R51 4.7K/6
R41 4.7K/6
RTD2120L
U3
RTD2120L
44
45
46
47
48
1
2
3
4
8
15 16 17
41 40 39 38 37 36 35 34 33
19
28
32
20
21
22
23
24
25
26
27
5
9
10
11
12
13
14
18 6 7
42
43
29
30
31
P5.0/PWM0
P5.1/PWM1
P5.2/PWM2
P5.3/PWM3
P5.4/PWM4
P5.5/PWM5
DSCL2/P5.6
DSDA2/P5.7
RST
ASDA/P3.1/TXD
XO XI VSS
VCC
P1.0/T2
P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7
NC
VSYNC
NC
P6.0/ADC0
P6.1/ADC1
P6.2/ADC2
P6.3/ADC3
P6.4
P6.5
P6.6/CLKO1
P6.7
ASCL/P3.0/RXD
P3.2/INT0
P3.3/INT1
P3.4/T0
P3.5/T1
P7.6/CLKO2
P7.7
NC NC NC
NC
NC
NC
NC
NC
R32
4.7K/6
R57 4.7K/6 R50 4.7K/6
D31
DAN217K
21
3
R45 4.7K/6
R165
NC/1M/6
R58 0/6
CN3
7101-E10N
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
R35
4.7K/6
R14 4.7K/6
R46 4.7K/6
U4
AT24C16N-10SC-2.7
1
2
3
45
6
7
8
A0
A1
A2
GNDSDA
SCL
WP
VCC
R161 100/6
R37 100/6
CN2
4501-10-10P-R
1
2
3
4
5
6
7
8
9
10
R26 200/6
Y1
24MHz
3
R27 300/6
R59 100/6
R164 100/6
C12
0.1u/6
R47 4.7K/6
R20 1K/6
C13
0.1u/6
C17
0.1U/6
R19 1K/6
R167 100/6
R173 1K/6
R39 4.7K/6
C15
10pF/6
C6
1U/6/NC
C14
10pF/6
R171 4.7K/6
C16
0.1u/6
R28
1K/6
Q4
MMBT3906
3
1
2
R38 100/6
Q5
MMBT3906
3
1
2
C8
0.1u/6
R166
4.7K/6
C11
0.1u/6
R162 100/6
R17 4.7K/6
R21 1K/6
R7
1K/6/NC
U5
NC/TCM810S
1
3
2
GND
VCC
RST
R13
10K/6
R29
2K/6
R24 10K/6