59.co printer errar hp color laser jet 3500 - HP Color LaserJet 3500 Printer

59.C0 Developer motor rotation error
1. Turn off the power by using the power switch, wait at least 30 seconds, and then turn on the power and wait for the device to initialize.
2. If the problem continues, contact HP Customer Support Center for technical assistance

All the book says is that one of the motors had a problem.
Power it off for at least 30 seconds. Power back on.
Make sure you are not using a surge protector.
Put the power cord directly into the wall outlet.

I just checked the manual for another printer and the 59.f0
could be the ITB. Make sure that it is seated correctly. If you have
a spare install it and see if problem goes away.

Best bet ->HP Support & Drivers

Check the following link..........
http://www.fixya.com/support/t1517115-error_code_59_c0_in_hplaserjet

Developing disengaging motor error
. Run the component test to verify that
the print developing disengaging
motor is working correctly.
. Reconnect the connectors J468 and
J1020 between the developing
disengaging motor and the DC
controller PCB.
. if motor is not rotating Replace the developing disengaging
motor.

or
problem due to cairtage leaver lock cairtages not engage properly i hv found max problem of this leaver it found damaged due to improper opening the doorpls follow above steps if problem not resolved then call hp engr for 4th step

The "developing disengaging motor" has problems. You need a technician. Try running the component test from the control panel. Select the disengaging motor and test it. Maybe it'll start working after the test!

I have a printer HP Color Laser Jet 5550' i cont print when i on the perinter ther 59 er--co is come on printer screen and the printer can not work .waht sould i do it cont rest too plase

Pull out the fuser at the rear of the machine.

http://www.eserviceinfo.com/service_manual/datasheets_h_2000.html
downlaod manual from here