Canon MultiPASS C755 Service Manual - Page 86

Communication Trouble, Procedures for Initial Identification of Trouble

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MultiPASS C755 Chapter 3: Maintenance & Service 4.4 Processing Communication Problems 4.4.1 Initial identification of problems Since the facsimile must transmit picture information, a transmitter, a receiver and telephone lines are required for this purpose. Transmissions may cause problems if one or more of the three is poor. Communication trouble FAX FAX Your customer's machine Communication companion machine Figure 3-13 Communication Trouble To process communication problems, first of all, it is necessary to narrow down the cause of the problem. Thus, the procedures appearing below must be checked accordingly. Start Does an error appear on the display? NO YES Is copying NG being done? OK Do copying Is copy NG picture OK? OK Errors show on the display. error massage page 3-16 error code page 3-22 General error Page 3-30 Test print NG Printing problem Page 3-31 OK Communication problems exist. Carry out the procedures on the next page. Scanning problem Page 3-33 Figure 3-14 Procedures for Initial Identification of Trouble 3-35

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3-35
MultiPASS C755
Chapter 3: Maintenance & Service
4.4 Processing Communication Problems
4.4.1 Initial identification of problems
Since the facsimile must transmit picture information, a transmitter, a receiver and telephone lines are
required for this purpose. Transmissions may cause problems if one or more of the three is poor.
Figure 3-13 Communication Trouble
Figure 3-14 Procedures for Initial Identification of Trouble
FAX
FAX
Your
customer's
machine
Communication
companion
machine
Communication
trouble
To process communication problems, first of all, it is necessary to narrow down the cause of the problem.
Thus, the procedures appearing below must be checked accordingly.
Start
Is copying
being done?
Communication problems
exist. Carry out the procedures
on the next page.
NG
Do copying
Is copy
picture OK?
NG
NO
Does an error
appear on the
display?
Errors show on the display.
error massage page 3-16
error code
page 3-22
General error
Page 3-30
Printing problem
Page 3-31
Test print
OK
Scanning problem
Page 3-33
NG
YES
OK
OK