Canon NP6412 Service Manual page 347

14 The copy has a fixing fault.
Cause Step
Copy paper 1
Fixing film 2
Fixing heater 3
DC control-
ler PCB,
Composite
power
supply PCB
COPYRIGHT © 1999 CANON INC.
Checks
Is the copy paper of a recommended
type?
Is the problem vertical and, in addi-
tion, in the form of lines?
Does the heater turn on when the Copy
Start key is pressed?
CANON NP6512/6612/7120/7130/7130F REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 11 TROUBLESHOOTING
YES/NO
NO Try a recommended
type. If the results are
good, ask the user to
use a recommended
type.
YES Check the fixing film
and the fixing lower
roller for scratches. If
there are scratches,
replace them.
NO See "The fixing heater
fails to turn on."
YES The control tempera-
ture of the fixing
heater is likely to be
too low. Check the
fixing assembly top
unit, DC controller
PCB, and composite
power supply PCB.
Action
11-61