<!-- from fixya rte -->How to fix hp 4100tn very light printing - HP LaserJet 4100 Parallel Monochrome Laser Printer w/Toner CPD-029
Posted by Anonymous on Sep 09, 2014
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Product Troubleshooting for LaserJet 4100 Parallel Monochrome Laser Printer w/Toner...
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Try a new cartridge first if you have not done that. Keep in mind that many third party, refilled or reman cartridges do not produce the same toner density as OEM HP cartridges. If a different cartridge does not produce better results then you either have an issue with the transfer roller, power supply or dirt on the laser scanner lens. If the inside of the printer is relatively clean you can rule out the scanner lens in most cases. 9 times out of 10 it is cartridge problem.
Having problems with your LaserJet 4100 Parallel Monochrome Laser Printer w/Toner... ?