LG DP9821P Service Manual page 47

8. KEY CIRCUIT DIAGRAM
R17
100K
Q1
2N3906
1
22K
R18
22K
1
Q2
2N3904
C4
0.1U
A B C D
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TP1
R12 R11
2.7K
1.3K
R16
SW2
SW1
TSM148AF TSM148AF TSM148AF
POWER AV_IN
TACK SW - TSM148AF
R13
R10
2.7K 1.3K
SW9
SW8
TSM148AF TSM148AF
DOWN UP
E F G H
R8 R5
R7
2.7K
4.7K 9.1K
SW3 SW4
SW5
TSM148AF TSM148AF
SETUP TITLE MENU
R9 R3
R6
2.7K
4.7K 9.1K
SW10 SW11
SW12
TSM148AF TSM148AF TSM148AF
RIGHT LEFT ENTER
I J K L
3-45 3-46
R1 R2
15K 39K
SW7
SW6 TSM148AF
TSM148AF
DISPLAY LCD_MODE
R4
0
M N O P
Q5 STZ6.8N
1 3
JP1
1
2
3
4
5
6
HEADER 6
2
2
Q R S T