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
ROW2
ROW3
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)
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
COL1
1 2
4 5
7 8
* 0
KEY
600
1
603
4
606
7
HOT601
HOT4
Figure. Keypad Circuit
3. TECHNICAL BRIEF
COL2 COL3
Multi CLR
3 LEFT
6 OK
9 SEND
# Down
HOT600
HOT3
601 602
2 3
604 605
5 6
607 608
8 9
609 HOT602
0 HOT5
- 45 -
COL4 COL5
Side
MENU
(up)
Side
UP
(down)
Side
Right
PTT
SEARCH CAM
BACK SPK
CLR MENU
LEFT UP
OK RIGHT
SND SEARCH
DN BACK
LGE Internal Use Only