Canon 800 - Manual (Page 48)

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Service Call Errors
The scanner automatically performs self-diagnostic testing each time it is switched on. If this testing
reveals a problem or if a problem arises during scanner operation, the scanner shows a service call
error on the display. A service call error is indicated by an error code consisting of an “E” followed
by three digits (“Ennn” where “n” indicates a number). This code is displayed in 2 parts as “En”
followed by “nn”. (Eg. “E123” is displayed as “E1” followed by “23”.)
When a service call error occurs, proceed as follows:
1 Immediately switch off the scanner and wait several minutes.
2 Switch the scanner on again and check the scanner status.
Note
When a service call error occurs, it is sometimes possible to resolve the problem simply by
switching the scanner off for a while and then switching it on again.
● When you cannot clear a service call error
Make a note of the error code and the nature of the problem. Then switch off the scanner and any
peripheral units such as the carrier, unplug the power cord and contact an authorized Canon service
technician.