Samsung ML-2251N/XAA Service Manual page 78

Troubleshooting
7.1.11 Ghost (3)
• Description Ghost occurs at 75.5mm or 78mm intervals.
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7.1.12 Ghost (4)
• Description A White ghost occurs in a black image printing at 32 mm intervals.
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7.1.13 Stains on the Face of Page
• Description The background on the face of the printed page is stained.
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Service Manual
7-6
Check and Cause
Fuser contamination or temperature control
problem.
Check and Cause
1. The life of the developer may be expired.
2. Abnormal output from the HVPS.
Check and Cause
1. Toner leakage due to improperly sealed
developer.
2. If the charge roller is contaminated, stains
on the face of page will occur.
Solution
1. Disassemble the fuser and remove any
contamination on the rollers. Clean any
contamination from between the
Thermistor and the Heat roller. (Caution:
Take care not to deform the rollers.)
Solution
1. Problem in the toner cartridge, replace the
toner cartridge and try to print out again.
2. Check the HVPS supply voltage. Clean all
HV terminals on the cartridge and on the
set. Replace the HVPS if the problem
persists.
Solution
1. Replace the developer cartridge.
2. If the charge roller is contaminated, run PC
Cleaning Mode Print 2 or 3 times.
And perform Self-Test 2 or 3 times to
remove contamination.
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