Main Fan Service Check - Lexmark T632 Service Manual

Main fan service check

Check the cable connections at J7 on the system board and at the main fan assembly. The main fan
runs continuously when the printer is powered on unless the printer is in the Power Saver mode.
FRU
1 Main fan
2 Main fan to system board
cable
3 Error code 927 (fan runs)
4 Error code 927
(fan not running)
Action
Manually spin the fan and check that it rotates freely. Check the cable
connection to the system board, J7 for correct installation.
Check the continuity of the cable. If incorrect, replace the cable.
Check the voltage at J7-1 on the system board. The voltage
measures +5 V dc (static) 0 V dc (fan running). If incorrect, replace
the main fan. If this does not fix the problem, replace the system
board.
Check the voltage at J7-3 on the system board. The voltages are:
• +22 V dc to +24 V dc
(printer and fan running)
• +12 V dc to +15 V dc
(printer not running—fan running about half speed).
If incorrect, replace the system board. If this does not fix the problem,
replace the main fan.
4060-xxx
Diagnostic information
2-69