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HP LaserJet 4000 - Page 249

HP LaserJet 4000
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EN
Troubleshooting the Printing System
7-55
Table 7-12. Blank Spots
Possible Cause Action
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.
Dirty or deformed
Transfer Roller.
Replace the Transfer Roller.
Defective Toner
Cartridge.
Replace the Toner Cartridge.
See also “Dropouts” on page 7-58.
Table 7-13. Creases
Possible Cause Action
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.
Printer’s operating
environment does not
meet specifications.
Make sure the printer’s operating environment meets
specifications.
Paper is loaded
incorrectly.
Make sure paper is loaded correctly and that the
guides fit properly against the paper stack.

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