Troubleshooting Problems in the HP LaserJet 8100 and 8150


I know The HP LaserJet 8100 and 8150 printers are older models and it may seem like they are past their prime, but I still have several out in the field and recently I’ve seen a resurgence in service calls for these models. In this post I’ll share some of the more common problems with these printers in an attempt to help you diagnose and repair them as needed.

50.1 Fuser Error in the HP 8100 and 8150
You’re probably thinking “how hard can the 50.1 fuser error be to fix?” In this model, like the old HP LaserJet II and III series, the error is usually related to the AC power supply, not the fuser. Actually, about 90% percent of the time it’s the AC power module. When servicing machines for this error I typically pull the fuser out and check the thermal fuse on top of the fuser and the lamps inside the unit for continuity to verify the problem isn’t in the fuser. I also check that when the machine turns on it doesn’t initialize and then say “warming up” on the display.  If it just jumps to 50.1 error, that is another give away.

After verifying the problem is related to the AC power supply I check the fuser for common wear and tear in case the fuser also needs to be replaced. When checking the fuser: Continue Reading

Market Point helps repair shops maintain profitability by avoiding cut-rate aftermarket parts that lead to expensive repair bills.


Just as the family automobile requires periodic service, so too, do today’s output devices, including printers, document feeders and finishers. To ensure peak printer performance and maximum device availability, two factors are essential: using genuine Original Equipment Manufacturer parts and expertise in determining exactly which parts need replacement. Providing dealers and self-repairers with genuine Lexmark parts and support is crucial, especially as unauthorized parts become increasingly common and cause more problems than they aim to prevent, because of high failure rates.  Read the full story here.

For Print Quality Issues Toner Cartridge is Suspect Number One


For any print quality issue the first check should be the toner cartridge, especially if the cartridge is compatible or refurbished in a Lexmark printer. Any cartridge other than a brand name Lexmark OEM or Lexmark re-manufactured cartridge is suspect number one, even for some jamming problems.

Be on the look out
When you open the bag the cartridge is shipped in, watch for excess toner in the bottom of the bag and on the cartridge. If you find loose toner in either of these places put the cartridge back in the bag and locate another because, if you use it in that condition it’s going to leak toner inside your printer. The toner will pile up on the inside causing smudges and streaks, pages folded at one or both leading corners, and eventually jamming at the entrance to the fuser. Not to mention the print quality issues you’ll experience.

Here’s what happens
Under the cartridge, the toner will coat the Transfer Roller and show up as grey on the back of prints, and/or inefficient image transfer to the paper from the image drum in the cartridge.

Continue Reading