Service manual

COPYRIGHT © 1999 CANON INC. CANON GP160 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 13 TROUBLESHOOTING
13-1
Reading the procedure chart
The procedure chart used in this chapter is a general flowchart that has been adapt-
ed to table form.
Below is an example and an explanation of how to use it.
Example: No AC power
(The remainder of the table has been omitted.)
■ When you only want to know the cause of a malfunction (the name of the part
thought to be malfunctioning), refer to the table’s Cause column.
In the case of “AC power source is not being supplied” described above, problems
such as an unconnected power plug, incomplete closing of a cover, and no original
power source can be considered as causes.
■ When you want to repair or know the checking procedure for a malfunction, check
the items in the Action column. Answer yes or no to the items in the Items to Check
column. If your answer matches the answer in the Result column, then perform the
procedure described in the Action column.
If the answer does not match the Result column, proceed to the next item and check
in the same manner.
Cause
Power plug is
disconnected
A cover is not
completely
closed
There is no
original power
source
Steps
1
2
3
4
Yes/No
NO
NO
NO
YES
Action
Plug the power plug
into the outlet.
Close the cover.
Explain to the customer
that the trouble is not
caused by the copier.
Check from Item 6.
Checks
Is the power plug connected to the
outlet?
Is the front cover completely closed?
Is the prescribed voltage being sup-
plied to the outlet?
Is the prescribed voltage being sup-
plied between J1-1 and J1-2? (J1 is
the power cord mount area.)
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