Ricoh Gestetner 5428C, Service Manual

Page: 71 / 152

31 October 2001 ELECTRICAL COMPONENT DEFECTS
4-3
Trouble-
shooting
4.2 ELECTRICAL COMPONENT DEFECTS
4.2.1 SENSORS
Component Condition Symptom
Master Eject Position (HP) Open E-23 is displayed whenever the drum rotates.
Sensor Shorted
Paper Exit Timing Sensor Open E-21 is displayed whenever the drum rotates.
Shorted
Feed Start Timing Sensor Open E-24 is displayed whenever the drum rotates.
Shorted
2nd Feed Timing Sensor Open E-22 is displayed whenever the drum rotates.
Shorted
Pressure Plate Limit Sensor Open The “master eject” indicator is lit.
Shorted E-12 is displayed.
Pressure Plate HP Sensor Open The “master eject” indicator is lit.
Shorted E-12 is displayed.
Drum Master Sensor
Open
The “D” jam indicator is lit whenever a master
is made.
Shorted
Paper Exit Sensor Open The “C” jam indicator is lit.
Shorted
The “B” jam indicator is lit whenever a copy is
made.
Master Eject Sensor Open The “E” jam indicator is lit.
Shorted
The “E” jam indicator is lit whenever a used
master is ejected.
Clamper Open Sensor Open E-00 is displayed.
Shorted
E-00 is displayed whenever the clamper
operates.
Clamper Close Sensor
Open
E-00 is displayed whenever the clamper
operates.
Shorted E-00 is displayed.
Table Lower Sensor Open The paper table doesn’t go down.
Shorted
The paper table goes down below the sensor,
and E-02 is displayed.
Platen Cover Sensor
Open
The master is made normally, even if the
platen cover is open.
Shorted
The image is treated using center/edge erase
mode.
Scanner HP Sensor Open E-13 is displayed.
Shorted
C238T001.WMF