Canon PC-D320 Service Manual page 108

PC-D320/PC-D340/FAX-L400 Chapter 4: Maintenance and Service
The paper skews.
(1) Check whether the recommended paper is used.
(2) Check whether more than 10 sheets of paper have been loaded in the multi-purpose
tray.
(3) Check whether more than 250 sheets of paper have been loaded in the cassette.
(4) Check whether the paper has been loaded into the multi-purpose tray correctly.
(5) Check whether the paper has been loaded into the cassette correctly.
(6) Check whether dust or paper debris have built up inside the cassette and the multi-
purpose tray.
(7) Check whether the paper pickup roller, or any other rollers, are damaged or scratched.
• The printing operation is abnormal.
The unit indicates there is a paper jam when there is no paper jam.
(1) Check if the recording paper sensor is operating correctly using the methodes given in
this chapter, 6.6 Faculty Tests, Test mode [6] Faculty test, [3] Sensor tests.
(2) Check the recording paper sensor, the sensor and the ECNT board (PS201).
(3) Check the page top sensor, the sensor cable and the ECNT board (J211) connections.
(4) Check the paper eject sensor, the sensor cable and the ECNT board (J210)
connections.
(5) Check the main motor, main motor connector and the ECNT board (J401).
(6) Replace the recording paper sensor.
(7) Replace the page top sensor.
(8) Replace the paper eject sensor.
(9) Replace the main motor.
(10) Replace the ECNT board.
(11) Replace the SCNT board.
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