MiTAC 8575 - Page 153

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8575
8575
N/B Maintenance
N/B Maintenance
8.6 Keyboard (K/B) Touch-Pad (T/P) Test Error
Error message of keyboard or touch-pad failure is shown or any key does not work.
U509
Micro
Controller
H8/F3437
P22
L29 120Z/100M
L31 120Z/100M
L33 120Z/100M
F1
0.25A
+5V
T_CLK_H8
T_DATA
RP48
0
KO 0,1
KI 0,5
KI [0:7]
KO [0:15]
5,6
7,8
1
2
3
C222
47P
C228
47P
C221
0.1µ
4
U511
LPC
Super I/O
PC87393
P21
23
18
T_CLK
17~24
1~16
Internal Keyboard Connector
Touch-pad
Level Shift
-ROMCS
72
R245
4.7K
R146
0
8
+3VS
-MCCS
73
R690
0
14
9
15
R138
10K
+5VA
-H8_KBCS
-H8_MCCS
R125
10K
95
98
VCC1,2,B
L521
120Z/100M
U11
P21
P22
J20
J13
H8_AVREF1
C709
0.1µ
C731
0.1µ
C708
0.1µ
C728
0.1µ
37,369,59,4
+5VA
AVCC
AVREF
KBD_US/JP#
19
R737
100K
+3VS
SW503
1
2
4
3
X
R744
10K
SA2
93
87
IRQ1
86
IRQ12
83
82
-IOR
-IOW
93
53
54
96
82
-IOW_H8
RP48
0