Samsung SGH-E360 Service Manual page 42

Flow 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
FLIP IN NO
2
V+ COM
3
GND NC
VR713
KEY_ROW(3)
KEY_ROW(4)
KEY_COL(1)
ZD701
VOLUME_KEY
STAR1
12
DIGIT0
12
SHARP1
12
CAMERA
P.T.T
KEY_MAP
ONKEYN
6
KEY_ROW(2)_M
5
KEY_ROW(2)
4
KEY_ROW(2)_K
VR714
ZD702
ZD703
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DIGIT4
DIGIT7
12 12
DIGIT9 DIGIT6
12 12
DIGIT8 LEFT
12 12
DOWN
12
V_UP
SOFT1
12
V_DOWN
12
END
END_KEY
V_UP
V_DOWN
V_COMMEN
V_GND
KEY_COL(0)
CAMERA_KEY
7-16
DIGIT1 DIGIT2
12 12
DIGIT3 DIGIT5
12 1 2
RIGHT INT
12 12
UP SOFT2
12 12
SEND CLR
12 12
TAC701
KEY_ROW(3)
34 5
VR711 VR712