Code :

Code: 922.57
Description: Fuser has taken too long to reach desired temperature after increasing interpage gap. Fuser page count stopped at 500,000 to preserve data.
Causes: • Low wattage or incorrect lamp. • Excessive load on the fuser. • Fuser not receiving sufficient AC power. • Poor supply line voltage.
Remedy: See 922.02

Code: 922.92
Description: Hot roll took too long to reach the beginning lamp detection temperature. Fuser page count not available.
Causes: • Low wattage or incorrect lamp. • Bad thermistor, circuit, or cabling. • Fuser not receiving sufficient AC power. • Poor supply line voltage.
Remedy: See 922.02

Code: 922.93
Description: Hot roll reached ‘final lamp detection temperature’ but took longer than largest time in lookup table. Fuser page count not available.
Causes: • Low wattage or incorrect lamp. • Bad thermistor, circuit, or cabling. • Fuser not receiving sufficient AC power. • Poor supply line voltage
Remedy: See 922.02

Code: 922.94
Description: Hot roll timed out in trying to reach the final lamp detection temperature. Fuser page count not available.
Causes: • Low wattage or incorrect lamp. • Bad thermistor, circuit, or cabling. • Fuser not receiving sufficient AC power. • Poor supply line voltage.
Remedy: See 922.02

Code: 922.95
Description: After hot roll lamp detection, did not roll over to steady state control in time. Fuser page count not available.
Causes: Control code has been lost.
Remedy: See 922.02

Code: 922.96
Description: Hot roll did not reach operating temperature in time (new enhanced control). Fuser page count not available.
Causes: • Low wattage or incorrect lamp. • Bad thermistor, circuit, or cabling. • Fuser not receiving sufficient AC power. • Poor supply line voltage.
Remedy: See 922.02

Code: 922.97
Description: Fuser has taken too long to reach desired temperature after increasing interpage gap. Fuser page count not available.
Causes: • Low wattage or incorrect lamp. • Excessive load on the fuser. • Fuser not receiving sufficient AC power. • Poor supply line voltage.
Remedy: See 922.02

Code: 923.01
Description: Fuser over temperature. Fuser page count between 0 and 99,999.
Causes: • Short in the thermistor circuit. • Noisy thermistor signal • Fuser is actually overheating due to hardware faults.
Remedy: 1 Fuser assembly Check for any signs of overheating in the fuser assembly. Check the hot roll, hot roll bearings, and the area around the thermistor for any signs of excessive heat. If a problem is found, replace the thermistor. If no problem is found, go to step 2. 2 Fuser top cover assembly (thermistor) Turn the printer off and disconnect the fuser to system board cable from J10 on the system board. Check the resistance between pins J10-3 and J10-4. The resistance should be greater than 100K ohms. If correct, go to step 3; if incorrect, disconnect the thermistor cable from J5 on the fuser board and measure the resistance between the two pins on the thermistor cable. If incorrect, replace the fuser top cover assembly (see “Fuser narrow media sensor removal”); if correct, replace the fuser to system board cable. 3 System board Fuser top cover assembly Check the voltage on J10-3 ground on the system board. The voltage should measure approximately +3.3 V dc. If the voltage is correct, replace the fuser top cover assembly. See “Fuser narrow media sensor removal”. If incorrect, replace the system board. See “System board and inner shield removal —model 500S".