LG KU730 Service Manual page 51

3. TECHNICAL BRIEF
3.11.4 Key Pad
There are 24 buttons and 6 side keys in Figure. Shows the Keypad circuit. 'END' Key is connected
On_SW to PMIC(PM6650).
COL0
ROW0 HOT1
ROW1 1
ROW2 4
ROW3 7
ROW4 HOT4
VREG_MSMP_2.7V
KEY_ROW(0)
KEY_ROW(1)
KEY_ROW(2)
KEY_ROW(3)
KEY_COL(0)
KEY_ROW(4)
KEY_COL(1)
KEY_COL(2)
KEY_COL(3)
KEY_COL(4)
COL1 COL2
2 3
5 6
8 9
0 HOT5
Table. Key Matrix Mapping Table
KEY
RA600
R605
10K
HOT600
10K
HOT1
600
1
603
4
606
7
HOT601
HOT4
Figure. Keypad Circuit(Main)
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COL3 COL4
CLR MENU
LEFT UP
OK RIGHT
SND SEARCH
DN BACK
CLR
601 602 LEFT
2 3
604 605 OK
5 6
607 608 SND
8 9
609 HOT602 DN
0 HOT5
COL5 COL6
MOD Key
(Backward)
MOD Key Side key
(Forward) (UP)
MOD Key Side key
(PLAY) (Down)
Side Key
(Camera)
MENU
UP
RIGHT
SEARCH
BACK