Key Pad - LG CU405 Service Manual

3.14.4 Key Pad

There are 24 buttons and 5 side keys in Figure. Shows the Keypad circuit. 'END' Key is connected
On_SW to PMIC(PM6650).
COL0
ROW0
ROW1 1
ROW2 4
ROW3 7
ROW4 *
VREG_MSMP_2.6V
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
Multi
2 3
5 6
8 9
0 #
KEY
600 601
1 2
603 604
4 5
606 607
7 8
HOT601 609
HOT4 0
Figure. Keypad Circuit
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3. TECHNICAL BRIEF
COL3 COL4
CLR MENU
LEFT UP
OK Right
SEND SEARCH
Down BACK
HOT600 CLR MENU
HOT3
602 LEFT
3
605 OK RIGHT
6
608 SND SEARCH
9
HOT602 DN BACK
HOT5
COL5
Side
(up)
Side
(down)
Side
PTT
CAM
SPK
UP