Philips HTL4111B/12 Service Manual page 33

7-4
Key Board Circuit Diagram:
5
D
C
B
A
5
4 3
C101 100pF/50V/NP0 C101 100pF/50V/NP0
SW1 SW1
R101 33 R101 33 KEY_SOURCE
POWER ON/OFF POWER ON/OFF
4 3
7-4
2
KEY_SOURCE 1
1
2
2
3
3
4
4
XP101 XP101
4PIN/1.0mm 4PIN/1.0mm
2
1
D
C
B
A
1