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F low Chart of Troubleshooting
KEY_COL(0:4)
KEY_COL(4)
KEY_COL(3)
KEY_COL(2)
KEY_COL(1)
KEY_COL(0)
KEY_ROW(0:4)
KEY_ROW(0)
KEY_ROW(1)
KEY_ROW(2)_M
KEY_ROW(3)
KEY_ROW(4)
+VDD_IO_HIGH
U701
1
6
FLIP
IN
NO
2
5
V+
COM
3
4
GND
NC
KEY_ROW(3)
KEY_COL(0)
C408 V705
STAR1
12
DIGIT0
12
SHARP1
12
CAMERA
KEY_MAP
KEY_ROW(3)
KEY_ROW(4)
KEY_ROW(2)_M
KEY_COL(1)
KEY_ROW(2)
KEY_ROW(2)_K
VOL701
1
IN
2
OUT
3
GND
6
5
4
CAMERA_KEY
ZD700
1
78
23
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DIGIT4
DIGIT7
1
2
12
DIGIT9
DIGIT6
12
12
DIGIT8
LEFT
12
12
DOWN
12
V_UP
SOFT1
12
V_DOWN
ONKEYN
7- 16
DIGIT1
12
DIGIT3
12
RIGHT
12
UP
12
SEND
12
1
2
3
4
ZD701
12
END
END_KEY
ZD701
DIGIT2
1
2
DIGIT5
12
INT
1
2
SOFT2
12
CLR
1
2
VOL700
V_UP
V_DOWN
V_COMMON
GND
SIDE_KEY
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