HP LJ 4m+ Problem

[ZachAttak4]

Hi all... New to this forum, but hopefully someone can help me out.

I have a HP LJ 4m Plus printer that has all of a sudden decided to stop working! What happens is that it feeds the paper through the toner area, puts the image on the page, and then jams up before going any further. When I remove the page (by taking out the toner cartridge), the toner on the page is still wet (if thats the right word), and smears easily. It seems to get folded up right before entering the fuser? Does this sound right, and if so, will a fuser replacement fix the problem?

Help if you can!!!

Thanks!

[ptjeff1]

Remove the fuser and rotate the coupling gear that drives the fuser. It's the gear on the left side when you remove the fuser. If it has broken teeth you need to replace the main gear assembly. Removing the toner cartridge will make it easier to rotate the gear.

[ZachAttak4]

Thanks Jeff!

I'll Give it a shot tonight!

[ZachAttak4]

Ok Jeff (or anyone else)...

You were right! There are teeth broken on the yellow gear that drives the two white gears on the back left side behind the fuser... So it looks like I need to replace this! Do I have my work cut out for me?! Any advice on where to find this part, or where to find instructions to replace this part? I assume if possible, I only need to replace the small yellow gear, as it seems to be the only one with broken teeth!

Thanks for your help!!!

[mrleung21]

I'd suggest just ordering a new fuser.

[ZachAttak4]

The main gear assembly that I am looking at (with the broken teeth) is not on the fuser though... that won't solve my problem, will it?

[Brian]

You will need to replace the drum drive assembly and you have your work cut out for you, you'll need to take the printer apart pretty far to get at it, the screws are behind the PCB.
You'll also need to check the gears on the fuser, they are often broken too in cases like this.