Service manual

ELECTRICAL COMPONENT DEFECTS 28 March 2006
4-4
4.2.2 PAPER EJECT
Name State Symptoms
Open The “C” jam indicator is lit. Paper Exit Sensor
Shorted
The “B” jam indicator is lit when a copy is
made.
4.2.3 PAPER FEED
Name State Symptoms
Open The “AB” jam indicator is lit. Paper Registration
Sensor
Shorted
The “A” jam indicator is lit when a copy is
made.
Open The paper table doesn’t go down. Paper Table Lower
limit Sensor
Shorted
The paper table goes down below the
sensor, and E-02 is displayed.
Open
Printing can begin even if there is no
paper, and the “A” jam indicator will be lit.
Paper End Sensor
Shorted The “load more paper” indicator is lit.
Open
E-02 is displayed after 1 second from
moving up the paper feed table during
printing.
Paper height sensor 1
Shorted
The paper table goes up over the sensor,
and E-02 is displayed
Open
E-02 is displayed after 1 second from
moving up the paper feed table during
printing.
Paper height sensor 2
Shorted
The paper table goes up over the sensor,
and E-02 is displayed
4.2.4 MAIN DRIVE
Name State Symptoms
Open E-00 is displayed. Clamper Open Sensor
Shorted
E-00 is displayed when the clamper
operates.
Open
E-00 is displayed when the clamper
operates.
Clamper Close
Sensor
Shorted E-00 is displayed.
4.2.5 SCANNER
Name State Symptoms
Open
The master is made normally, even if the
platen cover is open. (Have to push the
start button twice)
Platen Cover Sensor
Shorted
The image is treated using center/edge
erase mode.
Open Scanner HP Sensor
Shorted
E-13 is displayed.