Lexmark X642e - Page 56

2-18 Service Manual
7002-xxx
920 .31 Under temperature
during steady state
control. Fuser page
count between 300,000
and 399,999.
• Bad thermistor, circuit, or
cabling.
• Fuser not receiving AC power.
• Poor supply line voltage.
• Low voltage or incorrect lamp.
• Incorrect hot roll.
Go to “920.xx—Cold fuser service
check” on page 2-132.
920 .32 Hot roll fell too far below
desired temperature
while printing. Fuser
page count between
300,000 and 399,999.
• 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.
Go to “920.xx—Cold fuser service
check” on page 2-132.
920 .33 Hot roll too cool while
checking for slope
change. Fuser page
count between 300,000
and 399,999.
• 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.
Go to “920.xx—Cold fuser service
check” on page 2-132.
920 .34 Hot roll too cool when
heating to desired
temperature after slope
change. Fuser page
count between 300,000
and 399,999.
• 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.
Go to “920.xx—Cold fuser service
check” on page 2-132.
920 .36 Fuser is not increasing
in temperature even
though the lamp has
been on for an extended
time. Fuser page count
between 300,000 and
399,999.
• Fuser is not receiving AC power.
• Poor supply line voltage.
Go to “920.xx—Cold fuser service
check” on page 2-132.
920 .37 Fuser has been below
the desired temperature
for too long while media
is in the nip. Fuser page
count between 300,000
and 399,999.
• 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.
• Incorrect hot roll.
• Abrupt change in temperatures
that has disrupted control.
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