Lexmark T632 Service Manual - Page 103
Main fan service check
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4060-xxx 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. Diagnostic information 2-69