Only For Training And Service Purposes - LG GD580 Service Manual

3. Technical brief
3.1.14 Key Pad
There are 24 buttons and 3 side keys in Figure 3-1-14. Shows the Keypad circuit.
'END' Key is connected ONSWAn for AB3000.
K E Y N I 5
K E Y N I 4
K E Y N I 3
K E Y N I 2
K E Y N I 1
K E Y N I 0
K E Y O U T 0
K E Y O U T 1
K E Y O U T 2
K E Y O U T 3
K E Y O U T 4
LGE Internal Use Only
Table 3-1-8. Key Matrix Mapping Table
V l o
K
K E Y
K
K E Y
K
K E Y
K
K E Y
K
K E Y
Figure 3-1-14. MAIN PCB Keypad Circuit
- 42 -
U
u - p V l o d - o w n R g i t h
B 1 2 0 K B 1 2 1 K B 1 2 7 K
P A D _ B U T T O N K E Y P A D _ B U T T O N K E Y P A D _ B U T T O N K E
1 2 3 D
B 1 2 4 K B 1 1 6 K B 1 1 7 K
P A D _ B U T T O N K E Y P A D _ B U T T O N K E Y P A D _ B U T T O N K E
4 5 6 C a
B 1 1 3 K B 1 1 2 K B 1 1 1 K
P A D _ B U T T O N K E Y P A D _ B U T T O N K E Y P A D _ B U T T O N K E
7 8 9
B 1 0 8 K B 1 0 9 K B 1 1 0 K
K E Y P A D _ B U T T O N
P A D _ B U T T O N K E Y P A D _ B U T T O N K E Y
M
* 0 #
B 1 0 6 K B 1 0 5 K B 1 0 4 K
K E Y P A D _ B U T T O N K E Y P A D _ B U T T O N K E
P A D _ B U T T O N
E N D
K B 1 1 8
K E Y P A D _ B U T T O N
Copyright © 2009 LG Electronics. Inc. All right reserved.

Only for training and service purposes

p
L e t f
B 1 2 6 K B 1 0 0
Y P A D _ B U T T O N K E Y P A D _ B U T T O N
o w n S E N D O K
B 1 1 5 K B 1 2 5
K B 1 2 2
Y P A D _ B U T T O N K E Y P A D _ B U T T O N
K E Y P A D _ B U T T O N
m e a r C L R
B 1 1 4 K B 1 1 9
Y P A D _ B U T T O N K E Y P A D _ B U T T O N
V T M u i t l 1 -
B 1 2 3 K B 1 0 1
P A D _ B U T T O N K E Y P A D _ B U T T O N
u i t l 2 - S u b L - E D
K B 1 0 3
B 1 0 7
K E Y P A D _ B U T T O N
Y P A D _ B U T T O N
O N S W A _ N
V A 1 0 0
C I V L 0 5 0 5 1 0 1 V 1 5 0 F R