Diagnostic information 2-21
923 .01 Fuser over temperature.
Fuser page count
between 0 and 99,999.
• Short in the thermistor circuit.
• Noisy thermistor signal
• Fuser is actually overheating due to
hardware faults.
Go to “923.xx—Hot fuser
service check” on page 2-90.
923 .11 Fuser over temperature.
Fuser page count
between 100,000 and
199,999.
• Short in the thermistor circuit.
• Noisy thermistor signal
• Fuser is actually overheating due to
hardware faults.
Go to “923.xx—Hot fuser
service check” on page 2-90.
923 .21 Fuser over temperature.
Fuser page count
between 200,000 and
299,999.
• Short in the thermistor circuit.
• Noisy thermistor signal
• Fuser is actually overheating due to
hardware faults.
Go to “923.xx—Hot fuser
service check” on page 2-90.
923 .31 Fuser over temperature.
Fuser page count
between 300,000 and
399,999.
• Short in the thermistor circuit.
• Noisy thermistor signal
• Fuser is actually overheating due to
hardware faults.
Go to “923.xx—Hot fuser
service check” on page 2-90.
923 .41 Fuser over temperature.
Fuser page count
between 400,000 and
499,999.
• Short in the thermistor circuit.
• Noisy thermistor signal
• Fuser is actually overheating due to
hardware faults.
Go to “923.xx—Hot fuser
service check” on page 2-90.
923 .51 Fuser over temperature.
Fuser page count
stopped at 500,000 to
preserve data.
• Short in the thermistor circuit.
• Noisy thermistor signal
• Fuser is actually overheating due to
hardware faults.
Go to “923.xx—Hot fuser
service check” on page 2-90.
923 .91 Fuser over temperature.
Fuser page count not
available.
• Short in the thermistor circuit.
• Noisy thermistor signal
• Fuser is actually overheating due to
hardware faults.
Go to “923.xx—Hot fuser
service check” on page 2-90.
924 .01 Open thermistor check
failure. Fuser page
count between 0 and
99,999.
• Noisy thermistor signal.
• Intermittent connection.
• Thermistor cable not connected or
thermistor actually open.
Go to “924.xx—Hot fuser
service check” on page 2-91.
924 .11 Open thermistor check
failure. Fuser page
count between 100,000
and 199,999.
• Noisy thermistor signal.
• Intermittent connection.
• Thermistor cable not connected or
thermistor actually open.
Go to “924.xx—Hot fuser
service check” on page 2-91.
924 .21 Open thermistor check
failure. Fuser page
count between 200,000
and 299,999.
• Noisy thermistor signal.
• Intermittent connection.
• Thermistor cable not connected or
thermistor actually open.
Go to “924.xx—Hot fuser
service check” on page 2-91.
924 .31 Open thermistor check
failure. Fuser page
count between 300,000
and 399,999.
• Noisy thermistor signal.
• Intermittent connection.
• Thermistor cable not connected or
thermistor actually open.
Go to “924.xx—Hot fuser
service check” on page 2-91.
Service error codes (9xx.xx) (continued)
Error
code
Sub
codes
Display text Description Action
