Canon FAX-B820, Service Manual

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[CARTRIDGE JAMMED]
Printer position correction failure
Cause: Carriage does not operate normally, for one of the following reasons.
Carriage shaft is broken/ deformed. Broken /deformed parts
Or, contact sensor unit does not return from scanning position.
Countermeasure: Replace printer assembly or contact sensor unit.
[CHECK DOCUMENT] (#001)
Cause: PAPER JAM
This message appears when the document edge sensor cannot detect the edge of the document after the
document sensor detects the presence of the document and the feeder roller rotates 360 degrees to perform one
document feeding operation
Countermeasure: Clear the document jam.
[CHECK PAPER SIZE]
Cause: The size of paper set in the ASF is different from the paper size programmed in the printer.
Countermeasure: Change the printer’s PAPER SIZE setting to the correct paper size.
[CHECK PRINTER] (##332 to ##337, #343, ##345, ##346, ##348)
Cause: Printer internal failure
Countermeasure: (1) Is the BJ cartridge’s operation being hampered by jammed paper? Clear the jammed paper.
(2) Press the STOP button.
(3) Reset the BJ cartridge.
(4) Turn the power OFF/ ON.
(5) Refer to the appropriate action for the error code.
[DATA ERROR]
Cause: SRAM data have been destroyed and a checksum error has been generated because
the lithium battery is dead or some kind of SRAM failure.
Countermeasure: (1) Perform ALL CLEAR in the service mode.
(2) Replace the SCNT board.
[DOC. TOO LONG] (#003)
Cause: The document length exceeds 700cm.
Countermeasure: Make a reduced size copy of the document and send it again.
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