Canon NP6251 Service Manual page 532

Guide to the Troubleshooting Table
You will find troubleshooting steps organized in tables which are modified versions
of general flow charts. Study the following for an idea of how to consult them.
EX.AC power is absent.
Cause Step
Power plug 1
Covers 2
Power 3
supply
4
If you want to find out the cause (possible faulty part), see the column under "Cause."
In the case of "AC power is absent," the power plug may be disconnected, the covers
may not be closed firmly, or the main power supply is absent.
If you want to find out the action to take or the steps to correct a specific problem, go
through the steps in order. Answer YES or NO to the questions under "Checks," and
take the action indicated accordingly.
COPYRIGHT © 1997 CANON INC.
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Checks
Is the power plug connec-
ted to the power outlet?
Are the front door and the
delivery cover closed
firmly?
Is the specified voltage
present at the power outlet?
Is the specified voltage
present between J1-1 and
J1-2? (J1 is found near the
power cord mount.)
CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
YES/NO Action
NO Connect the power plug.
NO Close the door and the
cover.
NO The problem is not of the
machine. Advise the user.
YES Go to step 6.
11-1