Philips PET748/58 Service Manual page 20

5
CIRCUIT DIAGRAM-PANEL KEY
D
1.27*3 KJ1 KJ1
1.27*3
1 ADKEY1
1
2 ADKEY2
2
3
3
key board
C
connect
B
A
5
4
KC1 KC1 KC2 KC2
NC NC NC NC
KEY_GND
4
3
1 2
SW4 SW4
SOURCE SOURCE
KR2 KR2
3.9K 3.9K
1 2
SW6 SW6
LEFT LEFT
KR4 KR4 10K 10K
1 2
SW8 SW8
RIGHT RIGHT
SW10 SW10
KR6 KR6 18K 18K
1 2
1<< 1<<
SW12 SW12
KR8 KR8 30K 30K
1 2
>>1 >>1
KEY_GND
3
ADKEY1
ADKEY1 5
2
1 2
SW3 SW3
ENTER ENTER
KR1 KR1 3.9K 3.9K
1 2
SW5 SW5
UP UP
KR3 KR3 10K 10K
1 2
SW7 SW7
DOWN DOWN
KR5 KR5 18K 18K
1 2
SW9 SW9
MENU MENU
SW11 SW11
1 2 KR7 KR7 30K 30K
1 2
STOP STOP
SW13 SW13
KR9 KR9
1 2 56K 56K
1 2
SETUP SETUP
KEY_GND
2
1
D
C
B
A
1