I have an hp lj 4+ that is giving me error code service 50. Any ideas what could be wrong? Would I be better off replacing it? and if so what is a reliable yet inexpesive printer that could replace it. Thank you, Heather

I could not find a scanner error 2.
But frequently the scanners in these units require replacement. Unless you have it under maintenance contract the cost of repairs could be prohibitive in a unit this old.
Here is the service manual if it will help you define your problem better.
https://www.printertec.com.br/arquivos_download/3050.pdf

An error 50 on most HP Laserjet printer indicates the fuser has a problem. Most common problem is the heat lamp burned oou. The lamp is not a replaceable item unless you re a top notch technician. The fusing assembly however is usually a relatively easy replacement requireing only twisting of a couple of latches or removal of a couple of phillips screws.
The part # for the fusing asm for the HP LJ 3030 is RM1-0865-000CN.
These can readily be found online for anywheres from $120 to $250.

That's a main motor error, something could be jammed in transport, or a generic toner cart. that is too hard to turn, try powering on with toner removed...

50 error is the fusing assm. You need to replace the fuser then the error will go away.
hope this helps.

Hi,
you need an maintenance kit 4100

ACC C8057A Maintenance Kit, Fuser, 110V, LJ 4100 LJ 4100 Series ACC C8057-67901 Maintenance Kit, Fuser, 110V, LJ 4100 LJ 4100 Series ACC C8058A Maintenance Kit, Fuser, 220V, LJ 4100 LJ 4100 Series
Selected Item RG5-5069-000 See RG5-5069-090 Not Available 0
Alternate Item(s) RG5-5069-090 Fuser Film ***'y, 220V, LJ 4100 180.50 2 http://www2.printerworks.com/cgi-win/tpwall.exe/find?RG5-5069-000

HP LJ 4100 Fuserkit RG5-5069 HP

this is the fuser fan error replace them ur problem will be resolved

http://www.ok.is/vefmynd/HP%20Color%20LaserJet%202820%20user%20guide.pdf

Here is the user manual.

See page 225 for error codes and corrective action.
Note: Most error codes start at 50.....

60.2
printer error
The tray 2 lifter-motor is not functioning. 1 Turn the printer off and then on.
2 If the error persists, turn the printer off.
3 Verify that the tray 2 lifter wire-harness
is full seated in its connector on the
dc controller PCA (location J93).
4 Replace the tray 2 lifter-driver
assembly. See Tray 2 lifter-drive
assembly.
5 Replace the dc controller PCA. See

What is the exact error message shown on the display ?
Does it makes any strange noise when you start it up ?

The scanning unit is faulty, u may trying cleaning the scan unit ,else it needs replacement.

Happy printing

Omnipresent