Troubleshooting Malfunctions; E000 - Canon NP6251 Service Manual

IV. TROUBLESHOOTING MALFUNCTIONS
A. Troubleshooting Malfunctions
Caution:
Whenever installing/removing any sensor, pay attention to the orientation/position
of the spring used to lock down the detecting lever in position.

1. E000

Cause Step
Sub thermistor 1
(TH2)
2
Main thermistor 3
(TH1)
Thermistor 4
Thermistor 5
COPYRIGHT © 1997 CANON INC.
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Checks
Clear 'E000'. Turn off and then on
the power switch. Is 'E000'
indicated for about 5 sec, and
then does the power switch turn
off automatically?
Execute 'ERROR' in service mode
( ) to clear 'E000'. Check to
4
make sure that the fixing
assembly is set securely. Turn off
the power switch, and disconnect
the power plug. Does the heater
of the fixing roller turn on when
the power switch is turned on?
Caution:
Keep in mind that repeating this
step several times will cause the
fixing temperature to rise
abnormally, damaging the fixing
roller and the separation claws.
Turn off the power switch, cool the
upper fixing roller, and turn on the
power switch. Select the screen
showing 'FTMP' in service mode
( ). Does the value of
1
'FTMP' remain the same? (After
the check, be sure to turn off the
power switch.)
Is the thermistor in even contact
with the upper fixing roller?
Clean the contact area of the ther-
mistor. Is the problem corrected?
CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 11 TROUBLESHOOTING
YES/NO Action
YES Check the sub thermistor
(TH2)
NO Replace the DC
controller or the SSR.
YES Check the wiring from
J108A on the DC
controller PCB to the
thermistor (TH1); if
normal, replace the
thermistor (TH1).
NO Install the thermistor
correctly.
YES End.
Cont'd
11-85