E800; E805; E821 - Canon NP7160 Service Manual

17. E800

Cause
Step
Malfunction
Power supply PCB
DC controller PCB

18. E805

Cause
Step
Connector
Exhaust fan
(FM2, FM4, FM5)
DC controller PCB

19. E821

Cause Step
Ozone filter
Cleaner thermistor
(TH3)
DC controller PCB
COPYRIGHT © 1998 CANON INC.
Checks
1 Turn off and then on the power switch. Is the
problem corrected?
2 Replace the power supply PCB. Is the
problem corrected?
Checks
1 Check service mode '106' (E805 details)
while 'E805' is being indicated.
2 Are the connectors from the connector on the
DC controller PCB to the exhaust fan proper?
3 Replace the exhaust fan. Is the problem
corrected?
Checks
1 Replace the ozone filter. Is the problem
corrected?
2 Turn on the power switch, and select service
mode 111 (clean thermistor detection
temperature).
Do the reading remain as '111'?
CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 10 TROUBLESHOOTING
Yes/No
YES End.
YES End.
NO Check the wiring and
continuity from the DC
controller PCB to the control
panel PCB; if normal, replace
the DC controller PCB.
Yes/No
Make the checks in step 2 and
later to identify the fan that
caused the error.
NO Connect the connectors.
YES End.
NO Check the wiring from the DC
controller PCB to the exhaust
fan; if normal, replace the DC
controller PCB.
Yes/No
YES End.
YES Check the wiring from J112
on the DC controller PCB to
the thermistor; if normal,
replace the thermistor.
NO Replace the DC controller
PCB.
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