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2. Diagnostic information
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CAUTION
Unplug all power from the electrical outlet before you connect or disconnect any cable or
electronic board or assembly for personal safety and to prevent damage to the scanner.
Disconnect any connections between the scanner and the printer.
This chapter describes two methods to solve the operational problems. The first relies on the scanner internal
diagnostics to report error codes. The second uses troubleshooting techniques to isolate the problem. In many
cases, the internal error codes will help you to locate the source of the problem quickly. If no error codes are
reported, or if the error codes do not locate the source of the problem, refer to the Symptom Tables.
•
If you have an error message or user message, check the following:
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"Error codes and messages" on page 2-3
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"User attendance messages" on page 2-6
•
Does the POR stop? Check the
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Do you have a symptom, rather than an error message?
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"Symptom tables" on page 2-2
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"Scan module does not move to home position" on page 2-2
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"Reading is not performed" on page 2-2
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"Image does not appear" on page 2-2
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"Large jitter" on page 2-2
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"Reading position deviation" on page 2-2
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"Image unclear" on page 2-2
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"Strange sound generated (flatbed)" on page 2-2
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"Frequent paper jam, double feed, or skew" on page 2-2
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"Strange sound generated (ADF)" on page 2-2
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Additional information can be found at the following locations:
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"Control panel and buttons" on page 2-22
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"Menus" on page 2-32
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"Service checks" on page 2-13
Note: There may be printer error messages that are not contained in this service manual. Call your next level of
support for assistance.
"Power-On Self Test (POST) sequence" on page
4036-307, -308
2-2.
2-1
Diagnostic information
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