927.xx Fan service check
927.xx can be used for the main fan or the cartridge fan.
Main fan—927.00, 927.01, and 927.03 through 927.07.
Service tip: The main fan runs at full speed at the end of POR or when the printer is printing. It will only run half
speed when the printer is in the Ready state and not printing.
Main fan blades turn during
POR, then stop. Fan will
not run when trying to print.
Main fan blades do not turn
Cartridge fan service check
Error code 927.02 indicates a problem with the cartridge 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
4-57. If undamaged, go to step 2.
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
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" on page
If that does not fix the problem, replace the system board. See
"System board and inner shield removal" on page
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
4-57. If this does not fix the problem, replace the
removal" on page
system board. See
"System board and inner shield removal" on
Check to make sure the cartridge is plugged into J5 on the system
board. If properly plugged in, go to step 2.
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.
Replace the following FRUs in the order shown:
• Cartridge fan.
• System board. See
"System board and inner shield removal"
"Main fan removal" on