Technical information

COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON CLC5000 REV.0 JAN. 2001
CHAPTER 5 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
5-1
1 Guide to Table
In this Service Manual, work procedures are given in the form of tables instead of flow
charts used generally. Familiarize yourself by studying the example below.
EX. AC power is absent.
■ To find out the cause (problem part) of a single problem, refer to the item under
"Cause." For "AC power is absent," the cause may be the power plug, covers, power
source, or others.
■ To find out the checks to make or remedies to provide for a single problem, refer to the
"Checks" and "Action"; make checks, answer to the questions YES or NO, and provide
remedies accordingly. If the answer is otherwise, proceed to the next step.
Action
Connect the power plug
Close the cover
The problem is not of the
copier.
Advise the customer as such.
Go to step 6.
Cause
Power plug
Covers
Power sourse
Checks
Is the power plug connected to
the power outlet?
Are the front cover and delivery
cover closed properly?
Is the rated voltage present at the
power outlet?
Is the rated voltage present be-
tween J1-1 and -2 (near cord
plate)?
Step
1
2
3
4
Yes/No
NO
NO
NO
YES
■ Checks on the voltage using a tester; the description "Check the voltage between J109-
1(+) and J109-2(-) on the DC controller PCB" means that the positive probe of the meter
should be placed on J109-1(+) and the negative probe, on J109-2(-).
<Step>
<Checks>
NO
YES
YES
YES
NO
NO
Is the power plug
connected to the
power outlet?
Are the front cover
and delivery cover
closed properly?
Is the rated
voltage present
at the power outlet?
3
1
2
<Yes/No>
<Action>
Connect the power
plug.
Close the cover.
The problem is not of
the copier.
Advise the customer
as such.