On Mon, 22 Feb 2016 16:19:46 -0800, Jeff Liebermann
wrote:

Meanwhile, dig through this mess on 50.1 errors and see what you can
excavate:
https://www.google.com/search?q=hp+color+laserjet+50.1+fuser+error

Sorry. 50.8, not 50.1. That's what happens when I get interrupted:
https://www.google.com/search?q=hp+color+laserjet+50.8+fuser+error

Replacing the fuser does not guarantee a fix:
http://www.fixyourownprinter.com/posts/1001356

Take a look at these typical HP fuser thermistors:
https://www.google.com/search?tbm=isch&q=HP+fuser+thermistor
That a tiny thermistor is wrapped in Kapton or something heat
resistant. What happens is that melted toner gets stuck to the face
of the thermistor causing the toner to act as an insulator. The
thermistor reads a lower temperature than what the fuser roller is
actually running, causing the fuser to become excessively hot.
Eventually, the fuser gets too hot and cracks the heater element,
producing an error message. If you're lucky, and catch it before the
heater cracks, just cleaning the ossified toner off the face of the
thermistor is usually sufficient to fix the problem.

This web site offers anything between 20 and 1000 ohms as acceptable
heater resistance for 220V:
http://mindmachine.co.uk/products/HP_Error_50X.html#diagnosing-fuser-faults
I still can't find a good target value for the 3600.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558