Fan Service Check - Lexmark OPTRA 4069-XXX User Manual

4069-XXX

Fan Service Check

Auxiliary Fan Service Check
The auxiliary fan is in models 414 and 616.
Fan does not run or is noisy.
FRU
1 Fan Assembly
2 Engine Board
Main Fan Service Check
Check the cable connections at J1 on the engine 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 Engine Board
Cable
2-46
Service Manual
Action
Check the fan for proper installation
and for excessive noise. If incorrect,
replace the fan and cable assembly.
Check to make sure the auxiliary fan
cable is seated on connector J7 on
the engine board. If correct, check
for +24 V dc on J7-1 on the engine
board. If incorrect, replace the
engine board. If correct, replace the
fan assembly.
Note: When the printer is in warm-
up the voltage at J7-1 measures
approximately +12 V dc. When the
printer is running, the voltage
measures approximately +24 V dc.
Action
Manually spin the fan and check that
it rotates freely. Check the cable
connection to the engine board, J1
for correct installation.
Check the continuity of the cable. If
incorrect, replace the cable.