Service manual

210 Troubleshooting ENWW
Check the print cartridge
Image-formation defects are often the result of problems with the print cartridge. Use the
following list to verify that the print cartridge is still operating correctly.
Note Non-HP print cartridges can cause many types of image-formation defects. When the customer
experiences image defects, check the print cartridges to verify that they are HP products.
Perform all of the following checks before replacing the print cartridge.
● Check the print cartridge to see if it has been disassembled or refilled.
● Verify that the print cartridge is seated correctly in the printer cavity.
● Inspect the cartridge for toner leaking through worn seals. (Manual rotation of the drum can
cause internal damage, and toner spills can result.)
● White areas on the page can indicate that the drum has been exposed to light for too long.
Note The print cartridge is rated for 6,000 images at 5-percent coverage. Check the surface of the
photosensitive drum in the cartridge to see if it has been damaged or scratched. Touching the
drum contaminates the photosensitive surface, which can cause spotting and defects during
printing.
EconoMode
EconoMode creates draft-quality printing by reducing the amount of toner on the printed page.
Advise the customer to turn EconoMode on or off, either from the printer driver or a software
application.
CAUTION Hewlett-Packard does not recommend full-time use of EconoMode. If EconoMode is used full-time,
then the toner supply might outlast the mechanical parts in the print cartridge.
Image defects unique to the HP LaserJet 2300 series printers
Ashley’s ghost
Ashley’s ghost can appear on images in conditions of low humidity and low temperature. Images
with high coverage of grayscale at the leading edge experience ghosting from the leading edge.
Toner explosion
Toner explosion can appear as stray toner on the horizontal lines in conditions of high humidity in
images on labels and recycled media. To combat toner explosion, try turning on the “line detail”
setting in the control-panel menus (see page 62).
Halo
Halo can appear as stray toner around printed characters in conditions of high humidity and high
temperature on the second side of a duplexed print job, especially when using a higher-gloss
media. To combat halo, try turning on the “high transfer” setting in the control-panel menus (see
page 62).