Description: 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.
Causes: • 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.
Remedy: See 920.xx
Code: 920.51
Description: Hot roll took too long to heat up after transitioning to new enhanced mode. Fuser page count more than 500,000.
Causes: • Bad thermistor, circuit, or cabling. • Fuser not receiving AC power. • Poor supply line voltage. • Low voltage or incorrect lamp. • Incorrect hot roll.
Remedy: See 920.xx
Code: 920.52
Description: Hot roll fell too far below desired temperature while printing. Fuser page count more than 500,000.
Causes: • 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.
Remedy: See 920.xx
Code: 920.53
Description: Hot roll too cool while checking for slope change. Fuser page count more than 500,000.
Causes: • 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.
Remedy: See 920.xx
Code: 920.54
Description: Hot roll too cool when heating to desired temperature after slope change. Fuser page count more than 500,000.
Causes: • 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.
Remedy: See 920.xx
Code: 920.56
Description: Fuser is not increasing in temperature even though the lamp has been on for an extended time. Fuser count more than 500,000.
Causes: • Fuser is not receiving AC power. • Poor supply line voltage.
Remedy: See 920.xx
Code: 920.57
Description: Fuser has been below the desired temperature for too long while media is in the nip. Fuser page count more than 500,000.
Causes: 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.
Remedy: See 920.xx
Code: 920.91
Description: Hot roll took too long to heat up after transitioning to new enhanced mode. Fuser page count not available.
Causes: • Bad thermistor, circuit, or cabling. • Fuser not receiving AC power. • Poor supply line voltage. • Low voltage or incorrect lamp. • Incorrect hot roll.