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