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Flow Chart of Troubleshooting
9-13
9-7. Key Data Input
>
>
Y
Y
E
E
K
K
B
B
U
U
S
S
<
<
>
>
Y
Y
E
E
K
K
E
E
M
M
U
U
L
L
O
O
V
V
<
<
>
>
Y
Y
E
E
K
K
e
e
d
d
o
o
M
M
&
&
a
a
rr
e
e
m
m
a
a
C
C
<
<
E
E
S
S
U
U
A
A
P
P
//
Y
Y
A
A
L
L
P
P
2
2
1
1
D
D
N
N
E
E
S
S
2
2
1
1
6
6
0
0
5
5
C
C
F
F
F
F
2
2
1
1
W
W
E
E
R
R
2
2
1
1
D
D
N
N
E
E
K
K
O
O
2
2
1
1
1
1
2
2
2
2
3
3
3
3
4
4
4
4
0
0
0
0
5
5
C
C
P
P
F
F
1
1
5
5
0
0
5
5
D
D
Z
Z
3
3
2
2
5
5
C
C
4
4
0
0
5
5
D
D
Z
Z
3
3
0
0
5
5
D
D
Z
Z
2
2
2
2
3
3
3
3
4
4
4
4
1
1
0
0
5
5
C
C
P
P
F
F
1
1
1
1
4
4
0
0
5
5
C
C
))
0
0
((
L
L
O
O
C
C
_
_
Y
Y
E
E
K
K
))
0
0
((
W
W
O
O
R
R
_
_
Y
Y
E
E
K
K
))
2
2
((
W
W
O
O
R
R
_
_
Y
Y
E
E
K
K
))
1
1
((
W
W
O
O
R
R
_
_
Y
Y
E
E
K
K
))
0
0
((
W
W
O
O
R
R
_
_
Y
Y
E
E
K
K
))
2
2
((
L
L
O
O
C
C
_
_
Y
Y
E
E
K
K
))
1
1
((
L
L
O
O
C
C
_
_
Y
Y
E
E
K
K
))
0
0
((
L
L
O
O
C
C
_
_
Y
Y
E
E
K
K
Y
Y
E
E
K
K
N
N
O
O
P
P
))
1
1
((
L
L
O
O
C
C
_
_
Y
Y
E
E
K
K
))
0
0
((
L
L
O
O
C
C
_
_
Y
Y
E
E
K
K
))
1
1
((
W
W
O
O
R
R
_
_
Y
Y
E
E
K
K
))
1
1
((
L
L
O
O
C
C
_
_
Y
Y
E
E
K
K
Check Initial Operation
Yes
When one of the keys is
pushed,
is it displayed on LCD?
Check the Dome sheet & FPCB KEY
No
Yes
When one of the keys is
pushed,
KBIO signal is OK?
Replace the FPCB key Resolder
No
Yes
END
