
4511-xxx
Diagnostics—all models
2-101
Heavy background
Poor development or poorly charged toner particles cause excessive
background. This is more noticeable as the toner cartridge nears end–of–
life.
Partial blank image/white spots (no repeating pattern)
FRU
Action
Toner cartridge (not a
FRU)
PC Kit (not a FRU)
Make sure the toner cartridge and PC Kit are
correctly installed and the high voltage contacts
are clean.
If the toner cartridge and PC Kit are installed
correctly, try a new PC Kit first and then toner
cartridge.
LVPS/HVPS
Controller card
Check the contacts for correct installation and
contamination where contact is made between
the print cartridge assembly and LVPS/HVPS
board. Clean as necessary.
If this does not correct the problem, replace the
following FRUs one at a time in the order shown:
• LVPS/HVPS board
• Controller card
FRU
Action
Toner cartridge (not a
FRU)
Remove the toner cartridge assembly, and
gently shake the assembly to evenly distribute
the toner.
If toner cartridge is low, try a new one.
Paper (not a FRU)
Make sure recommended paper is being used.
Summary of Contents for E238
Page 14: ...4511 xxx xiii Service Manual Japanese Laser Notice Chinese Laser Notice ...
Page 15: ...4511 xxx Laser notices xiv Korean Laser Notice ...
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Page 21: ...Safety information xx 4511 xxx ...
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Page 147: ...4511 xxx Diagnostic aids E238 E240 and E240n 3 3 Configuration Menu printout sample ...
Page 148: ...4511 xxx 3 4 Service Manual Diagnostics mode printout sample ...
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Page 240: ...7 2 Service Manual 4511 xxx Assembly 1 Covers ...
Page 242: ...7 4 Service Manual 4511 xxx Assembly 2 Electronics ...
Page 244: ...7 6 Service Manual 4511 xxx Assembly 3 Frame ...
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