Service manual

5-7
Confidential
<Function>
Functions of each “Service Mode”.
9) Factory Inspection Mode
This mode checks the operation of each sensor, solenoid, fan, scanner motor and main
motor to check the point with the malfunction, when repair the machine.
• This mode is included in the machine software.
• The machine goes into the inspection mode by a special operation when the power is
turned on.
• In the inspection mode, the Ready LED blinks once when the state of a sensor or a
switch is changed (from ON to OFF, or from OFF to ON).
• The Toner LED is lit when the state of all switches and sensor is detected.
<Sensor Inspection Check Procedure>
• Check sensors.
Manually activate the sensors listed below, and verify that the Ready LED is lit. (When
the state is changed continuously, the Ready LED keeps blinking.)
Cover sensor, New toner sensor, Registration rear sensor, Paper eject sensor,
Registration front sensor, Toner sensor and Tail edge sensor.
When the verification of all the sensors is completed the Toner LED becomes lit.
Fig. 5-1
Cover sensor
Toner sensor
(Toner LED PCB ASSY)
Paper eject sensor
(Eject sensor PCB ASSY)
New toner
sensor
Registration front sensor
/Tail edge sensor
(Registration front sensor PCB ASSY)
Registration rear sensor
(Registration rear sensor PCB ASSY)
Toner sensor
(Toner sensor PCB unit ASSY)