Only For Training And Service Purposes - LG L705i Service Manual

3. TECHNICAL BRIEF
3.11.4. Key Pad
There are 22 buttons, 4 sub keys and 5 side keys in Figure. Shows the Keypad circuit. 'END' Key is
connected On_SW to PMIC(PM6650).
COL(0)
ROW0 MENU
ROW(1) 1
ROW(2) 4
ROW(3) 7
ROW(4) *
VREG_MSMP_2.7V
RA600
10K
R600
10K
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)
LGE Internal Use Only
COL(1) COL(2)
I MODE CLR
2
5
8
0
Table. Key Matrix Mapping Table
KEY
MENU I MODE CLR LEFT SEND
CLR LEFT SND
600 601 602 RIGHT MULTI
1 2 3 RIGHT MULTI
603 604 605 UP
4 5 6 UP
606 607 608 DOWN
7 8 D 9 N
HOT600 609 HOT601 OK
HOT3 0 HOT4 OK
Figure. Keypad Circuit
- 60 -
COL(3)
LEFT
3 RIGHT
6 UP
9 DOWN
# OK
KEY_ROW(3)
KEY_ROW(4)
KEY_COL(4)
KEY_COL(5)
SIDE KEY
Copyright © 2007 LG Electronics. Inc. All right reserved.

Only for training and service purposes

COL(4) COL(5)
SEND MULTI
(SIDE KEY)
MULTI DOWN
(SIDE KEY)
UP
(SIDE KEY)
1 2
(SUB KEY) (SUB KEY)
3 MODE
(SUB KEY) (SUB KEY)
KB100 KB101
KB102 KB103