Code :

Code: 925.52
Description: Too hot to do lamp detection and NVRAM bit indicates previous wrong lamp detected. Fuser page count stopped at 500,000 to preserve data.
Causes: Attempting to POR machine after receiving a 925.01.
Remedy: See 925.01

Code: 925.91
Description: Lamp detection performed and found error. Writes to the fuser information chip have been disabled due to a previous write failure.
Causes: • 115 V lamp in 220 V printer. • Lamp has excessive wattage.
Remedy: See 925.01

Code: 925.92
Description: Too hot to do lamp detection and NVRAM bit indicates previous wrong lamp detected. Writes to the fuser information chip have been disabled due to a previous write failure.
Causes: Attempting to POR machine after receiving a 925.01.
Remedy: See 925.01

Code: 927.00
Description: Service fan error.
Causes: • Loose connector. • External blockage of the fan, preventing it from turning. • Bad fan.
Remedy: 1 Main fan Check the main fan to make sure it is plugged into J4 on the system board. If the fan cable id correctly connected to J4, check the cable and the cable connector for any signs of damage. If damaged, replace the main fan assembly. See “Main fan removal”1. If undamaged, go to step 2. 2 Main fan Turn the printer off and check the main fan for any signs of blockage of the fan blades. If there is any sign of blockage, remove the blockage. 3 Main fan blades turn during POR, then stop. Fan will not run when trying to print. Main fan System board Measure the voltage at J4-1 on the system board. The voltage should measure approximately +2.5 V dc. If incorrect, replace the main fan. See “Main fan removal”1. If that does not fix the problem, replace the system board. See “System board and inner shield removal —model 500S"1. 4 Main fan blades do not turn Measure the voltage at J4-3. The voltage should measure +14.4 V dc with the fan running full and approximately 7.0 V dc when running half speed. If incorrect, replace the main fan. See “Main fan removal”1. If this does not fix the problem, replace the system board. See “System board and inner shield removal — model 500S”1.

Code: 927.01
Description: Main fan stalled.
Causes: • External blockage of fan • Fan may not turn due to internal fan problem.
Remedy: 1 Main fan Check the main fan to make sure it is plugged into J4 on the system board. If the fan cable id correctly connected to J4, check the cable and the cable connector for any signs of damage. If damaged, replace the main fan assembly. See “Main fan removal”1. If undamaged, go to step 2. 2 Main fan Turn the printer off and check the main fan for any signs of blockage of the fan blades. If there is any sign of blockage, remove the blockage. 3 Main fan blades turn during POR, then stop. Fan will not run when trying to print. Main fan System board Measure the voltage at J4-1 on the system board. The voltage should measure approximately +2.5 V dc. If incorrect, replace the main fan. See “Main fan removal”1. If that does not fix the problem, replace the system board. See “System board and inner shield removal —model 500S"1. 4 Main fan blades do not turn Measure the voltage at J4-3. The voltage should measure +14.4 V dc with the fan running full and approximately 7.0 V dc when running half speed. If incorrect, replace the main fan. See “Main fan removal”1. If this does not fix the problem, replace the system board. See “System board and inner shield removal — model 500S”1.

Code: 927.02
Description: Cartridge fan stalled.
Causes: • Loose connector. • External blockage of the fan, preventing it from turning. • Bad fan.
Remedy: 1 Cartridge fan Check to make sure the cartridge is plugged into J5 on the system board. If properly plugged in, go to step 2. 2 Cartridge fan Check for any signs of blockage in the fan. If any is found, remove and retry the printer. If no problem is found, go to step 3. 3 Cartridge fan System board Replace the following FRUs in the order shown: • Cartridge fan • System board. See “System board and inner shield removal —model 500S”1.

Code: 927.03
Description: Main fan took too long to ramp up.
Causes: • Loose connector. • External blockage of the fan, preventing it from turning. • Bad fan.
Remedy: 1 Main fan Check the main fan to make sure it is plugged into J4 on the system board. If the fan cable id correctly connected to J4, check the cable and the cable connector for any signs of damage. If damaged, replace the main fan assembly. See “Main fan removal”1. If undamaged, go to step 2. 2 Main fan Turn the printer off and check the main fan for any signs of blockage of the fan blades. If there is any sign of blockage, remove the blockage. 3 Main fan blades turn during POR, then stop. Fan will not run when trying to print. Main fan System board Measure the voltage at J4-1 on the system board. The voltage should measure approximately +2.5 V dc. If incorrect, replace the main fan. See “Main fan removal”1. If that does not fix the problem, replace the system board. See “System board and inner shield removal —model 500S"1. 4 Main fan blades do not turn Measure the voltage at J4-3. The voltage should measure +14.4 V dc with the fan running full and approximately 7.0 V dc when running half speed. If incorrect, replace the main fan. See “Main fan removal”1. If this does not fix the problem, replace the system board. See “System board and inner shield removal — model 500S”.