Canon FY8-13EX-000, NP6218 service manual Guide to Troubleshooting Tables, 10-1

Guide to Troubleshooting Tables

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	Checks	YES/NO	Remedies
Power plug	1	Is the power plug	NO	Connect the plug.
		connected to the outlet?
Covers	2	Are the front door and deliv-	NO	Close the door and cover.
		ery cover closed properly?
Main power	3	Is the specified voltage	NO	The problem is not the
		present at the power outlet?		copier’s; advise the user.
	4	Is the specified voltage pre-	YES	Go to step 6.
		sent between J1-1 and J1-
		2? (J1 is located near the
		power supply cord mount.)

■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 column as guided by YES/NO to the checks; or, move to the next step as necessary.

Step

1

2

3

Checks		YES/NO	Remedies
Is the power
		NO	Connect the
plug connected to			plug
the outlet?
	YES
Are the front door
		NO	Close the door
and delivery cover
			and cover.
closed properly?
	YES
Is the specified
		NO	The problem is not
voltage present at the			the copier’s: advise
power outlet?			the user.

YES

■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 (–).

COPYRIGHT © 1997 CANON INC. CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON) 10-1