Canon CLC5000 Información técnica Pagina 463

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COPYRIGHT
©
2001 CANON INC.
2000 2000 2000 2000
CANON CLC5000 REV.0 JAN. 2001
CHAPTER 5 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
5-106
c. E000–XX20, XX30, XX40, XX50 (high-order 2 digits representing type as XX=01
indicating upper heater and 02, lower heater)
1) Clear ‘E000’ (*), and turn ON the power switch. Does the fixing
heater turn ON?
• Check by the eye. Be sure to turn OFF the power switch immedi-
ately after the check.
NO: See “The fixing heater fails to turn on.
YES: Go to step 7.
Fixing thermistor (open circuit)
2) Open the front cover and the delivery assembly to cool the fixing
roller.
Close the delivery assembly and the front cover; then, set the meter
to the 5VDC range, and measure the voltage between J2209A-13
(+: FRST) and J2209A-12 (–; GND).
Likewise, measure the voltage between J2209B-12 (+; FRST) and
J2209B-1 (–; GND).
Does the voltage decrease from about 5 V gradually when the
power switch is turned ON?
• Turn OFF the power switch immediately after the check.
NO: Check the wiring from J2209 to the fixing thermistor; if normal,
replace the fixing thermistor.
Thermistor
3) Is the fixing oil thermistor upper, lower (THM1, THM2) in even
contact with the upper/lower fixing roller?
NO: Re-install it.
Environment
4) Does the problem occur only when the machine is turned on for the
first time in the morning?
YES: Advise the user that the operating environment is outside the
specification.
Advise the user not to turn on the power while the room is cold.
Thermistor switch (activation)
5) Is there electrical continuity in the thermal switch (TP1, TP2)?
NO: Replace the thermal switch.
Main thermistor
DC controller
6) Replace the thermistor (upper/lower). Is the problem corrected?
YES: End.
NO: Replace the DC controller.
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