HP LaserJet Pro 400 Printer M401 series - Inspect the toner cartridge for damage

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Inspect the toner cartridge for damage

1.

Remove the toner cartridge from the product,

and verify that the sealing tape has been

removed.

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Chapter 5 Solve problems

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2.

Check the memory chip for damage.

3.

Examine the surface of the imaging drum on

the bottom of the toner cartridge.

CAUTION:

Do not touch the roller (imaging

drum) on the bottom of the cartridge.

Fingerprints on the imaging drum can cause

print-quality problems.

4.

If you see any scratches, fingerprints, or other

damage on the imaging drum, replace the

toner cartridge.

5.

If the imaging drum does not appear to be

damaged, rock the toner cartridge gently

several times and reinstall it. Print a few pages

to see if the problem has resolved.