2-10 Service Manual
920 .12 Hot roll fell too far below
the desired temperature
while printing. Fuser
page count between
100,000 and 199,999.
• 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 2-87.
920 .13 Hot roll too cool while
checking for slope
change. Fuser page
count between 100,000
and 199,999.
• 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 2-87.
920 .14 Hot roll too cool when
heating to desired
temperature after slope
change. Fuser page
count between 100,000
and 199,999.
• 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 2-87.
920 .16 Fuser is not increasing
in temperature even
though the lamp has
been on for an extended
time. Fuser page count
between 100,000 and
199,999.
• Fuser is not receiving AC power.
• Poor supply line voltage.
Go to “920.xx—Cold fuser
service check” on page 2-87.
920 .17 Fuser has been below
the desired temperature
for too long while the
media is in the nip.
Fuser page count
between 100,000 and
199,999.
• 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 temperature that
has disrupted control.
Go to “920.xx—Cold fuser
service check” on page 2-87.
920 .21 Hot roll took too long to
heat up after
transitioning to new
enhanced mode. Fuser
page count between
200,000 and 299,999.
• 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 2-87.
Service error codes (9xx.xx) (continued)
Error
code
Sub
codes
Display text Description Action
