Acer AT2645 Service Manual page 69

Key board
NOTE
Pull up R = 3.9K ohm to 3.3V
PCB key location
Power Source
Menu
KEY1
C001
0.1uF/25V
CN001
1
2
3
4
KEY2
C002
CONN
0.1uF/25V
LOCK TYPE
( Front )
CH- CH+ Vol-
Vol+
SOURCE MENU
2.44V
1.73V
4 3 4 3
5 SW001 5 SW002
2 1 2 1
R001 R002
4.3K OHM 1% 1/10W
11KOHM1/10W
POWER CH-
2.44V
1.73V
4 3 4 3
5 SW005 5 SW006
2 1 2 1
R005 R006
4.3K OHM 1% 1/10W
11KOHM1/10W
69
VOL- VOL+
1.04V 0.35V
4 3 4 3
5 SW003 5 SW004
2 1 2 1
R003 R004
1.8K OHM 1% 1/10W 470 OHM 1% 1/10W
CH+
1.04V
4 3
5 SW007
2 1
R007
1.8K OHM 1% 1/10W