Panasonic KX-FT21BX Service Manual page 190

1 2 3
A
B
C
D
5V
0V
OV/3.3V/5V
E
F
G
5V
0V
5V
H
0V
NO PAPER 0V
PAPER 5V
KX-FT21LA
SCHEMATIC DIAGRAM (OPERATION CIRCUIT)
4 5 6
5V
0V
KEY SCAN 0V
SENSOR SCAN 5V
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sensor position
sensor
KX-FT21LA
7 8 9
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10 11 12