Oki LP-1040 Maintenance Manual page 242

■Technician troubleshooting
Check printing using the engine test pattern 15
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
Check the other possible problem locations
Developer unit
The roller (MAGNET ROLL) surface is damaged
Yes
OK
Replace the developer unit (see p. 9-35)
End of procedure
NG
Check the other possible problem locations
No
Clean the developer blade (BLADE-S-DV)
OK
Not solved
End of procedure
Chapter 7 Printer Image Quality Problems Troubleshooting
7-13