Functions of each "Service Mode".
Factory Inspection Mode
This mode checks the operation of each sensor and solenoid to check the point with the
malfunction, when repair the machine.
• The machine goes into the inspection mode by a special operation when the power is
• In the inspection mode, check that the Status LED or a switch is changed (from ON to
OFF, or from OFF to ON).
<Sensor Inspection Check Procedure>
• Check sensors.
Manually activate the sensors and the actuators listed below, and verify that the
Status LED is lit.
(When the state is changed continuously, the Status LED keeps blinking.)
(Regist front sensor, Regist rear sensor, Paper eject sensor, New toner sensor, Front
cover sensor, PE sensor, Edge sensor, MP PE sensor, Duplex tray sensor)
* The toner sensor is unsupported.
Front cover sensor
Paper eject sensor
(Relay rear PCB)
New toner sensor
(Relay front PCB)
Toner sensor PCB
(Light reception) Un supported
Regist rear sensor
High-voltage PS PCB
Regist front sensor
Toner LED PCB
Paper feed frame
MP PE sensor
PE EG sensor