Service manual

54
8575
8575
A N/B Maintenance
A N/B Maintenance
LH
LH
LH
LH
LH
LH
LH
Battery charge control
Wake up SB at ACPI mode 5→3V
Keep OOOTVADJ257PB7
Lithium ion battery charging CV mode voltage
level adjust
Keep OOOTVADJ158PB6
Power button trigger VIA8231 on/off Duplicate
Power BTN# 5→3V
Keep HOIHLLOT H8 SB PWRBTN#91PB0
Key matrix scan output 7
Key matrix scan output 6
Key matrix scan output 5
Key matrix scan output 4
Key matrix scan output 3
Key matrix scan output 2
Key matrix scan output 1
Key matrix scan output 0
Reset CPU
H8 VDD5 power source switch
Battery charge control
Power button trigger VIA8231 on 5→3V
Function
Keep L
Keep L
Keep L
Keep L
Keep L
Keep L
Keep L
Keep L
Keep
Keep
Keep H
Keep H
Keep
Keep H
Keep H
STANDBY
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
LH
LH
H
O
O
O
O
O
O
O
O
O
O
O
O
O
O
ON
L
L
L
L
L
L
L
L
L
LLH
H
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
After
RESET/OFF
L
L
L
L
L
L
L
L
T
T
T
T↓
T
T
T
During
RESET
KB OUT7
KB OUT6
KB OUT5
KB OUT4
KB OUT3
KB OUT2
KB OUT1
KB OUT0
SMbus SW
CHARGING2
H8 RCIN#
VDD5 SW
CHARGING1
Force Discharge
H8 WAKE#
H8 Pin
Definitions
72
73
74
75
76
77
78
79
57
58
68
69
80
81
10
Pin
P17/A7
P16/A6
P15/A5
P14/A4
P13/A3
P12/A2
P11/A1
P10/A0
Port 1 TTL input voltage (input high min=2V, input low max=0.8V)
PB7
PB6
PB5
PB4
PB3
PB2
PB1
Port B TTL input voltage (input high min=2V, input low max=0.8V)
Name
PCI reset gate