1-64 Service Manual
5055-01X
High Capacity Paper Feed Sensor / Switch Test
Check the condition of each sensor from the lighting of LEDs on the
high capacity paper feed board. When each sensor operates with
the power supplied, the associated LED lights.
To perform the test:
Interrupt the photointerrupter sensor signal or actuate the micro-
switch being tested while observing the associated LED on the high-
capacity paper feed board.
LED Sensor Name
1 Paper size sensor 1 switch (letter size 11 inches)
2 Paper size sensor 1 switch (A4 size)
3 Residual paper sensor 1 switch
4 Residual paper sensor 2 switch
5 Residual paper sensor 3 switch
6 Residual paper sensor 4 switch
7 Paper level sensor switch
8 Lower limit switch
9 Cover open sensor switch
10 Docking sensor switch
11 Upper limit switch
12 Paper sensor switch
13 Paper feed sensor switch