HP (Hewlett-Packard) 4000 Series, 4050 Series Printer User Manual


 
Troubleshooting the Printing System 7-63
Table 7-16. Contamination on Back
Possible Cause Action
Contamination inside
printer (Tray
Separation Roller,
Feed Roller, Transfer
Roller, Fuser, Toner
Cartridge).
1. Print at least 10 pages to see if the problem goes
away.
2. Print a cleaning page (page 4-4).
Identify and clean the contaminated part according
to the “Repetitive Defect Ruler” on page 7-73. If
contamination cannot be removed, replace the
contaminated part.
3. Check for Toner leaks.
Paper does not meet
printer specifications
or is stored
improperly.
1. Print a few more pages to see if the problem
corrects itself.
2. Turn over the stack of paper in the tray. Also try
rotating the paper 180°.
3. Check the paper (or other print media) type and
quality. Replace the paper, and advise the customer
to use the recommended paper and store it properly.