Acer AL2023 Service Manual page 54

A
MCU_VCC
Reset circuit
3DVCC C52
NC/1U/16V/6
3DVCC
4 4.7K/6 R77
NC/82K/6
R76
MCU_RST
MCU_RST
D20 R164
R86
0 ohm/6 NC/0 ohm/6
NC/DAN202U
RST
3
Add
R159,R160,R161,R164,R165
MCU_VCC
R110 R111 R113 R114 R109 R115
R159 100/6
VOLUME
R160 100/6
VBRI
Hot_Plug R137 100/6
Hot_Plug
DOWN
UP
RIGHT
R124 100/6
DDC2_SCL
R126 100/6
DDC2_SDA
LEFT
MENU
2
R129 100/6
IICSCL
R133 100/6
IICSDA
MCU_RST R161 NC/6
SEL
R135 100/6
DDC_SDA
R136 100/6
DDC_SCL
1
A
B
R73
10K/6
LED_G
LED_R R78
*Co-lay RTD2553V/RTD2525L note:
R76 R86 C52 R77 R164
RTD2525L
NC NC 1U/16V 82K 0 ohm
RTD2553VH
4.7K 0 ohm NC NC NC
5DVCC
R98 NC/6
5DVCC
RST
R116 R117 R118 R119 R120 R121 R122 R123
44
P5.0/PWM0
45
P5.1/PWM1
46
P5.2/PWM2
47
P5.3/PWM3
48
P5.4/PWM4
1
P5.5/PWM5
2
DSCL2/P5.6
3
DSDA2/P5.7
9
P3.2/INT0
10
P3.3/INT1
11
P3.4/T0
12
P3.5/T1
13
P7.6/CLKO2
14
P7.7
8
ASDA/P3.1/TXD
5
ASCL/P3.0/RXD
U5
RTD2120L
Y2
24MHz
R165 NC/6
M512_XOUT
R140
2005/09/30 6.8K/6
C62
10pF/6 10pF/6
B
C
2005/11/08
3DVCC
C
R74
B E
10K/6
Q10
R75 4.7K/6 MMST3906
2
Q11
4.7K/6
2
MMST3906
MENU
SEL
PWR
DOWN
UP
RIGHT
LEFT
Junction from
A change to B
MCU_VCC
R99 R100 R101 R103 R104 R105 R106
C60
NC/6
31
NC
32
NC
30
NC
29
NC
R125 0 ohm/6
28
VSYNC
43
NC
(PWR_SEL)
42
NC
RTD2120L KEY3
27
P6.7
R128 0 ohm/6
26
P6.6/CLKO1
25
P6.5
EEPROM_WP
24
P6.4
LED_G
23
P6.3/ADC3
LED_R
22
P6.2/ADC2
21
P6.1/ADC1
20
P6.0/ADC0
R141
C63 4.7K/6
EEPROM_WP
C
D
CN7
M1
8
S1
7
P1
6
D1
5
U1
4
RIG1
3
LEF1
2
1
NC/4501-10-8P-R
CN6
R87 1K/6 M1
10
R88 1K/6 S1
9
R89 1K/6 P1
8
R90 1K/6 D1
7
R91 1K/6 U1
6
R92 1K/6
5
R93 1K/6
4
R94 33/6 RIG1
3
R95 33/6 LEF1
2
1
2005/09/30
4501-10-10P-R
TO BUTTON BOARD
VRMT
PANEL_PW12
SCL_HDCP 3
SDA_HDCP 3
R107 100/6
RTD_SD3/SDI 3
RTD_SCSB
R108 100/6
RTD_SCLK
C61
NC/6
MCU_VCC
R112
AVS1
M512_XOUT
PWR R131 R132
10K/6 10K/6
STBY
MUTE
MCU_VCC
C64
0.1u/6
Ω
U6
8 1
VCC A0
7 2
WP A1
6 3
IICSCL SCL A2
5 4
IICSDA SDA GND
AT24C16N-10SC-2.7
Title
Size
Date:
D
E
*Co-lay CN6/CN7 note:
R92 R93 C53 C54 R109 R117
CN7
NC NC NC NC NC NC
CN6
1K 1K 0.1u 0.1u 4.7k 4.7k
(PWR_SEL)
KEY3
VCC12
R96
6.8K/6
R97
2K/6
PROJECT NAME:W0TB
MCU
Document Number Rev
A1A
W0TB
Friday, January 05, 2007 Sheet 3 of 7
E
4
3
2
1