Canon MultiPASS MP390 Service Manual page 123

Chapter 5
When visiting a user with a trouble report, a) can be known by outputting the
error protocol data (or error dump), and g) can be known by outputting the total
transaction report (or the system error data list).
(2) Test communication according to flowchart procedures appearing on the next page.
* Carry out the tests with the actual lines on each item, verify the symptoms and record it.
* In the case of trouble with another manufacturer's facsimile, refer to the flowchart for troubles with other
manufacture's.
(3) Finally, process over by judging systematically all the data.
NOTE:
If the other party's facsimile is that of another manufacturer and there is nothing wrong with your customer's machine,
it is recommended that you ask your customer to contact the facsimile user of the other party, so that the other party's
facsimile is checked by the dealer. "Call the service station" in the flowchart means that problems may occur with
regard to the communication compatibility of facsimile, consult the matter with the staff in charge at the service
station. To quicken the resolving of the problem, report the information listed in (1) above.
* Procedures for processing communication problems with Canon facsimile.
The process for carrying out communications at three points as shown in the figure.
5-22
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