Oki LP-1040 Maintenance Manual page 240

■Technician troubleshooting
Check printing using the engine test pattern 15
LED head
Check that the LED head is secure and release it
OK
Not solved
End of procedure
Clean the LED head lens (see p. 3-62)
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
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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