LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
- 41 -
3.12.4 Key Pad
There are 24 buttons, 3 side keys and touch keys in Figure. Shows the Keypad circuit. ‘END’ Key is
connected On_SW to PMIC(PM6650).
Figure. Keypad Circuit
Table. Key Matrix Mapping Table
8
2
HOT3
0
3
4
5
7
#
6
STAR
9
1
KEY
MENU
HOT501
SND
502
503
OK
SEARCH
501
R509
100K
506
HOT502
508
R508
R507
100K
100K
R505
100K
UP
LEFT
DN
CLR
510
505
509
504
SHARP
STAR
507
100K
R506
RIGHT
KEY_ROW(1)
KEY_ROW(2)
KEY_ROW(3)
KEY_ROW(4)
KEY_COL(2)
KEY_COL(0)
KEY_COL(4)
KEY_COL(3)
VREG_MSMP_2.8V
KEY_COL(1)
KEY_ROW(0)
COL0
COL1
COL2
COL3
COL4
COL5
ROW0
Multi
CLR
MENU
Side
(up)
ROW1
1
2
3
LEFT
UP
Side
(down)
ROW2
4
5
6
OK
Right
CAM
ROW3
7
8
9
SEND
SEARCH
ROW4
*
0
#
Down
BACK
Содержание CU575
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