User Guide

8081
8081
N/B Maintenance
N/B Maintenance
113
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.
U520
Micro
Controller
H8/F3437
KI[0:7]
KO[0:15]
U10
LPC
Super I/O
PC87393
P19
17~24
1~16
Internal Keyboard Connector
RP504
4.7K
+3V
P21
J6
SA2
93
87
IRQ1
86
IRQ12
83
82
IOR#
IOW#
93
53
54
96
97
P21
VDD5
RP28
47K*8
VDD[0:3]
RP22
4.7K*8
J5
+5V
CP4
47P*4
12
T_CLK
T_DATA
10
57
L16 120Z/100MHZ
L17 120Z/100MHZ
L15
120Z/100MHZ
C101
0.1µ
SW_LEFT
SW_RIGHT
R56
0
R55
0
1,2
3,4
5,6
7,8
Touch-Pad Connector
P22
SW3
SW4
F2
0.5A/POLYSW
2
3
R720
1M
C740
22P
C744
22P
X503
16MHZ
C158
0.1µ
C165
0.1µ
C160
0.1µ
C161
0.1µ
+3V
C701
0.1µ
C741
0.1µ
C742
0.1µ
VDD5
VCC[1,2,B]
L530
120/100M
9,59,4
14,39,63,88
72
73
8
14
ROMCS#
MCCS#
Level
Shift
9
15
95
98
H8_KBCS#
H8_MCCS#
U515
SN74CBTD3384
VDD5
R682
10K
R652
10K
R815
0
R117
0
R653
0
R681
0
AVREF
H8_VDDA
C731
0.1µ
C735
0.1µ
C736
0.1µ
3736
H8_AVREF
AVCC
R712
0
R715
0
25
R78
0
+3V
R207
10K
KBD_US/JP#
From U9 ICH4-M