Canon NP6317 Service Manual page 164

The troubleshooting procedures in this manual are prepared in the form of tables, rather than
flow charts. Study the following for an idea of how to consult the tables.
EX. AC power is absent.
Cause/Fault Step
Power plug 1
Covers 2
Main power 3
4
To find out the cause (faulty part) of a single problem, see the Cause/Fault column. In the case
of "AC power is absent," you will learn that the power plug may not be connected, the covers
may not be closed properly, or the main power may be absent.
To find out checks to make or remedies to provide for a single problem, see the Remedy col-
umn as guided by YES/NO to the checks; or, move to the next step as necessary.
Step
1
2
3
The instruction "Measure the voltage between J109-1 (+) and J109-2 (-) on the DC controller
PCB" asks you to connect the meter's positive probe (+) to J109-1 and negative probe to J109-
2 (-).
Guide to Troubleshooting Tables
Checks
Is the power plug connected to the outlet?
Are the front door and delivery cover
closed property?
Is the specified voltage present at the
power outlet?
Is the specified voltage present between
J1-1 and J1-2? (J1 is located near the
power supply cord mount.)
Checks
Is the power
plug connected to
the outlet?
YES
Are the front door
and delivery cover
closed properly?
YES
Is the specified
voltage present at the
power outlet?
YES
YES/NO
NO Connect the plug.
NO Close the door and
cover.
NO The problem is not
the copier's; advise
the user.
YES Go to step 6.
YES/NO Remedies
Connect the
NO
plug.
NO
Close the door
and cover.
The problem is not
NO
the copier's: advise
the user.
Remedies