HP Laserjet 4050 Main Motor

One of our laserJet 4050 printers has make making this excruciating noise when it prints.  It still prints fine though.  I couldn't figure out what was wrong with it so I tried a maintenance kit which included new rolers and new fuser unit, and i also replaced the toner.  No luck.

After a few weeks we started to get error 59.00.00 which i found out was a problem with the main motor or the DC.  I would like to replace either or both, and I'm looking for advice as to whether I should attempt this or not, and id so, how i can get the parts that i need.  Shopping for laserjet parts on the net is somewhat scary as I'm sure more than a few of the companies are scams somehow.

I'd also like an exploded diagram of the laserjet 4050 that shows the main motor.

Normally I would do this kind of research myself, but I am in meeting all day and away next week.  I would like to order the parts or call for service by the end of the day.

Thanks guys.
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adamdrayerAsked:
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CallandorCommented:
I haven't tried replacing one of those motors, but I wouldn't think they are that complicated to replace.  Here's a site with factory motors: http://www.sparepartswarehouse.com/HP,Printer,Motors.aspx
newuser4Commented:
These motors are pretty reliable, before buying a new one I'd try removing the cartridge from the printer to see if at startup the same error message appears.

I'd check also gears which drive movement from the motor to see if any is broken or missing.

You can find a service manual for your printer here:

http://fileshare.eshop.bg/equipment_mfg/HP_22.html

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adamdrayerAuthor Commented:
thanks guys... I then had an issue with two different parts.  one called "assy main motor"  and one called "motor man".  I have no idea, but the gears idea is a good one too!  Probably won't dish out the points till next week, but I really appreciate it.

Adamdrayer
adamdrayerAuthor Commented:
Thanks guys... It was something caught in the gears.  Callandor found exactly what I was looking for, and newuser4 led me to one of the best manuals I ever saw for a piece of hardware.  It showed me how to get to the gears by the motor which eventually led to finding a stray piece of folded up paper causing friction.  can 'o air!

thanks again.
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