E064; E202 (Keys On Control Panel Invalidated) - Canon NP6218 Service Manual

8. E064

Cause Step
Wire
Composite
power supply
PCB
Transfer charg-
ing assembly,
Transfer
charging roller
Primary
charging roller
High-voltage
cable

9. E202 (keys on control panel invalidated)

Cause Step
Scanner home
position sensor
(PS1)
DC controller
PCB check
COPYRIGHT © 1997 CANON INC.
Checks
1 Turn off and on the power switch,
and set '1' as the copy count. Is
E064 indicated after copying
operation?
2 Set '1' as the copy count, and
press the Copy Start key once
again. Is E064 indicated after
copying operation?
3 Is a fault noted in the transfer
charging assembly/transfer roller
or contacts?
4 Detach the drum cartridge, and
check the primary charging roller.
Is a fault noted in the primary
charging roller or the contacts?
5 Detach the rear cover, and check
the high-voltage cable. Is a
scratch or crack found in the high-
voltage cable?
Checks
1 Is the scanner at home position
when E202 is indicated?
Is the scanner home position
sensor (PS1) normal? (See
descriptions on how to check
photointerrupters.)
CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 10 TROUBLESHOOTING
Results Action
YES Check the harness
between the DC
controller PCB and the
composite power supply
PCB.
YES Go through steps 3
through 6; then, replace
the composite power
supply PCB.
YES Replace the transfer
corona assembly/transfer
roller.
YES Replace the drum
cartridge.
YES Replace the high-voltage
terminal.
Results Action
NO See "The scanner fails to
move forward/
in reverse."
NO Check the wiring
between the DC
controller PCB and PS1;
if normal, replace PS1.
YES Replace the DC
controller PCB.
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