Oki LP-1040 Maintenance Manual page 252

■Technician troubleshooting
Check printing using the engine test patterns 5 and 15.
LED head
Clean the LED head lens (see p. 3-62)
OK
Not solved
End of procedure
Check that the LED lights up (see p. 7-50)
OK
Not solved
End of procedure
Remove and reinsert the cables (see step 4 to p. 9-214)
OK
Not solved
End of procedure
Replace the LED head (see p. 9-214)
Calibrate the LED focal point (see p. 10-52)
OK
Not solved
End of procedure
Check the other possible problem locations
Environment (temperature, humidity, and paper)
Turn the heater switch On or Off
* Leave the Printer for at least 2 hours after changing the setting
OK
Not solved
End of procedure
Replace the paper
OK
Not solved
End of procedure
Check the other possible problem locations
Process cartridge
Check whether or not the process cartridge has been replaced in the
process cartridge log (see p. 2-15).
The process cartridge has been replaced
No
Replace the process cartridge
Yes
Not solved
End of procedure
Check the other possible problem locations
Chapter 7 Printer Image Quality Problems Troubleshooting
Developer unit
The roller (MAGNET ROLL) surface is damaged
Clean the developer blade (BLADE-S-DV)
Yes
OK Replace the developer unit (see p. 9-35)
Not solved
End of procedure
Check the other possible problem locations
No
OK
Not solved
End of procedure
OK
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