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