Only For Training And Service Purposes - LG KU380 Service Manual

3.10.4 Key Pad
There are 23 main key buttons in Figure.
Shows the Keypad circuit. 'END' Key is connected to PMIC(PM6650).
ROW(0)
ROW(1)
ROW(2)
ROW(3)
ROW(4)
VREG_MSMP_2.7V
1 2 3
KEY_ROW(1)
4 5 6
KEY_ROW(2)
7 8 9
KEY_ROW(3)
HOT4 0 HOT3
KEY_ROW(4)
KEY_COL(0)
KEY_COL(1)
KEY_COL(2)
Copyright © 2007 LG Electronics. Inc. All right reserved.

Only for training and service purposes

COL(0) COL(1)
- -
1 2
4 5
7 8
* 0
Table. Key Matrix Mapping Table
KEY MAP
400 401 402
403 404 405
406 407 408
HOT400 409 HOT401
Figure. Main/Sub Keypad Circuit
- 57 -
3. TECHNICAL BRIEF
COL(2) COL(3)
- CLR
3 LEFT
6 OK
9 SND
# DN
KEY_ROW(0)
KEY_ROW(1)
KEY_ROW(2)
KEY_ROW(3)
KEY_ROW(4)
KEY_COL(3)
KEY_COL(4)
COL(4)
MENU
UP
RIGHT
SEARCH
BACK
CLR MENU
LEFT UP
OK RIGHT
SND SEARCH
DN BACK
LGE Internal Use Only