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3. TECHNICAL BRIEF
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3.10.4 Key Pad
There are 23 main key buttons in Figure.
Shows the Keypad circuit. ‘END’ Key is connected to PMIC(PM6650).
Table. Key Matrix Mapping Table
Figure. Main Keypad Circuit
COL(0)
COL(1)
COL(2)
COL(3)
COL(4)
ROW(0)
-
-
-
CLR
MENU
ROW(1)
1
2
3
LEFT
UP
ROW(2)
4
5
6
OK
RIGHT
ROW(3)
7
8
9
SEND
SEARCH
ROW(4)
*
0
#
DOWN
BACK
KEY_ROW(0)
HOT4
2
6
5
1
4
3
7
0
KEY MAP
9
8
HOT3
CLR
END
SEARCH
VA430
EVL14K02200
OK
VA427
EVL14K02200
EVL14K02200
VA426
VA425
EVL14K02200
DN
404
400
409
401
EVL14K02200
VA413
RA400
2
4
6
8
1
3
5
7
RIGHT
100K
BACK
SND
HOT400
HOT401
UP
EVL14K02200
VA431
406
HOT402
403
LEFT
100K
R427
402
VA432
EVL14K02200
405
408
EVL14K02200
VA429
MENU
VA428
EVL14K02200
407
EVL14K02200
VA424
KEY_ROW(4)
KEY_COL(0)
KEY_COL(1)
KEY_COL(2)
KEY_COL(4)
KEY_COL(3)
VREG_MSMP_2.7V
PM_ON_SW_N
KEY_ROW(1)
KEY_ROW(2)
KEY_ROW(3)
Summary of Contents for U370
Page 1: ...Date January 2008 Issue 1 0 Service Manual Model U370 Service Manual U370 ...
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