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hp 4500 printing blank pages

D

Dimitri

Jan 1, 1970
0
Hi,

I have a colorlaserjet hp 4500 that prints blank pages. I replaced the
transfer belt with a brand new one out of the box that did not fix the
problem. I also tried another spare transfer belt and that didnt work
too. I performed all of the diagnostic tests on page 302 of the
service manual (drum,developer,engine) tests and did not find a
problem. I exposed the scanner unit to make sure the shutter was free
to move and that seems ok too. What else can I do? Any ideas? How do I
know if it is the h-v power supply or the DC controller?

thanks,
Dimitri
 
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