Lexmark X642e Service Manual page 59

Service error codes (9xx.xx) (continued)
Error Sub
Display text
code codes
920 .91 Hot roll took too long to
heat up after
transitioning to new
enhanced mode. Fuser
page count not
available.
920 .92 Hot roll fell too far below
desired temperature
while printing. Fuser
page count not
available.
920 .93 Hot roll too cool while
checking for slope
change. Fuser page
count not available.
920 .94 Hot roll too cool when
heating to desired
temperature after slope
change. Fuser page
count not available.
920 .96 Fuser is not increasing
in temperature even
though the lamp has
been on for an extended
time. Fuser page count
not available.
920 .97 Fuser has been below
the desired temperature
for too long while media
is in the nip. Fuser page
count not available.
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.
• Excessive load on the fuser.
• 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.
• Excessive load on the fuser.
• 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.
• Excessive load on the fuser.
• 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.
• 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
2-21