Lexmark X642e Service Manual page 57

Service error codes (9xx.xx) (continued)
Error Sub
Display text
code codes
920 .41 Hot roll took too long to
heat up after
transitioning to new
enhanced mode. Fuser
page count between
400,000 and 499,999.
920 .42 Hot roll fell too far below
the desired temperature
while printing. Fuser
page count between
400,000 and 499,999.
920 .43 Hot roll too cool while
chickens for slope
change. Fuser page
count between 400,000
and 499,999.
920 .44 Hot roll too cool when
heating to desired
temperature after slop
change. Fuser page
count between 400,000
and 499,999
920 .46 Fuser is not increasing
in temperature even
though the lamp has
been on for an extended
time. Fuser page count
between 400,000 and
499,999.
920 .47 Fuser has been below
the desired temperature
for too long while media
is in the nip. Fuser page
count between 400,000
and 499,999.
Description
• Bad thermistor, circuit, or
cabling.
• Fuser not receiving AC power.
• Poor supply line voltage.
• Low voltage or incorrect lamp.
• Incorrect hot roll.
• Bad thermistor, circuit, or
cabling.
• Noisy thermistor signal.
• Fuser not receiving AC power.
• Poor supply line voltage.
• Low voltage or incorrect lamp.
• Incorrect hot roll.
• Bad thermistor, circuit, or
cabling.
• Noisy thermistor signal.
• Fuser not receiving AC power.
• Poor supply line voltage.
• Low voltage or incorrect lamp.
• Incorrect hot roll.
• Bad thermistor, circuit, or
cabling.
• Noisy thermistor signal.
• Fuser not receiving AC power.
• Poor supply line voltage.
• Low voltage or incorrect lamp.
• Incorrect hot roll.
• Fuser is not receiving AC power.
• Poor supply line voltage.
• 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.
• Incorrect hot roll.
• Abrupt change in temperatures
that has disrupted control.
Action
Go to "920.xx—Cold fuser service
check" on page 2-132.
Go to "920.xx—Cold fuser service
check" on page 2-132.
Go to "920.xx—Cold fuser service
check" on page 2-132.
Go to "920.xx—Cold fuser service
check" on page 2-132.
Go to "920.xx—Cold fuser service
check" on page 2-132.
Go to "920.xx—Cold fuser service
check" on page 2-132.
Diagnostic information
7002-xxx
2-19