Canon iR1600 Series, Service Manual

Page: 684 / 738

COPYRIGHT © 2002 CANON INC. CANON FAX BOARD REV.0 MAR. 2002
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CHAPTER 3 TROUBLESHOOTING
4.2 Correcting Communication Faults
If you found out that the fault is with communication after going through the flow chart
on the preceding page, go through the following:
4.2.1 Correcting Faults
1) Obtain the details of the fault.
a. operation preceding the fault
number of originals, transmission mode, timing of error (e.g., before transmission),
use of auto dialing.
b. faulty image sample (if in reception)
c. LCD indications at time of the fault
d. communications control report at time of the fault
e. user’s abbreviation, telephone number, fax number, model name
f.
other party’s user name, telephone number, fax number, model name
g. frequency and type of error for the fault
h. other party’s fax condition
number of pages transmitted/received, auto or manual, error or successful, recep-
tion condition
REF.
If you are visiting the user in response to a call, generate a system dump
list for a. and g.
2) Perform communications testing according to the flow chart shown on the next page.
• Perform the testing several times using the actual line for each item; then, check
the symptoms, and record them.
3) Evaluate the fault based on the details you have obtained, and take appropriate action.
REF.
If the other party is a non-Canon device, and the use’s machine is free of
indefinable faults, have the device of the other party checked by inform-
ing the user as such.