Panasonic KX-B620 - Operation Panel Board; Paper out Sensor

KX-B620 Series
KX-B520 Series”
2-11 Operation Panel Board
1) Circuit Operation
in this board, two keys and two LEDs are included, copy key, feed Key, paper out LED and power
LED.
Circuit diagram is shown below.
CONTROL BOARD OPERATION PANEL
Fig. 42 Circuit Diagram
When the key is pressed, “H” signal is inputted to the CPU. According to its signal the CPU starts the
programed function.
When the CPU detects the paper out signal from the paper sensor, the CPU makes a signal to turn the
paper out LED on.
2-12 Paper Out Sensor
1) Circuit Operation
A micro switch is used.
When the paper is out , the micro switch is open, and accordingly the signal PAEND becomes high
level.
CONTROL BOARD
Fig. 43 Circuit Diagram