Lexmark X642e - Page 53

Diagnostic information 2-15
7002-xxx
920 .01 Hot roll took too long to
heat up after
transitioning to new
enhanced mode
(standby control only.
Fuser page count
between 0 and 99,999.
• Bad thermistor, circuit or cabling.
• Fuser not receiving sufficient AC
power.
• Poor supply line voltage.
• Low wattage or incorrect lamp.
• Incorrect hot roll.
Go to “920.xx—Cold fuser service
check” on page 2-132.
920 .02 Hot roll fell too far below
the desired temperature
while in standby. Fuser
page between 0 and
99,999.
• Bad thermistor, circuit or cabling.
• Fuser not receiving sufficient AC
power.
• Poor supply line voltage.
• Low wattage or incorrect lamp.
• Incorrect hot roll.
Go to “920.xx—Cold fuser service
check” on page 2-132.
920 .03 Hot roll too cool when
checking for slope
change in standby.
Fuser page count
between 0 and 99,999.
• Bad thermistor, circuit or cabling.
• Fuser not receiving sufficient AC
power.
• Poor supply line voltage.
• Low wattage or incorrect lamp.
• Incorrect hot roll.
Go to “920.xx—Cold fuser service
check” on page 2-132.
920 .04 Hot roll too cool when
heating to desired
temperature after slope
change (standby control
only). Fuser page count
between 0 and 99,999.
• Bad thermistor, circuit or cabling.
• Fuser not receiving sufficient AC
power.
• Poor supply line voltage.
• Low wattage or incorrect lamp.
• Incorrect hot roll.
Go to “920.xx—Cold fuser service
check” on page 2-132.
920 .06 Fuser is not increasing
in temperature even
though the lamp has
been on for an extended
time. Fuser page count
between 0 and 99,999.
• Fuser is not receiving AC power.
• Poor supply line voltage.
Go to “920.xx—Cold fuser service
check” on page 2-132.
920. .07 Fuser has been below
the desired temperature
for too long while media
is in the nip. Fuser page
count between 0 and
99,999.
• Bad thermistor, circuit, or
cabling.
• Very noisy thermistor signal.
• Fuser not receiving AC power.
• Poor supply line voltage.
• Excessive load on the fuser.
• Low voltage or incorrect lamp.
• Abrupt change in temperature
that has disrupted control.
• Incorrect hot roll.
Go to “920.xx—Cold fuser service
check” on page 2-132.
Service error codes (9xx.xx) (continued)
Error
code
Sub
codes
Display text Description Action