Check high voltage contacts

king2525 · ‎06-11-2020

Hello HP Community,

I am having a light print issue. I have relatively new toner cartridges. This has happen before to other toner cartridges. I suspecting its the high voltage contacts. What is the procedure to check the high voltage contacts? What voltage should it be?

Thank you

Repairatrooper · ‎06-11-2020

The primary charge on the imaging drum will be between -500 and -1000 volts DC.

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king2525 · ‎06-11-2020

Thank you. What is the procedure to check the contacts?

Repairatrooper · ‎06-11-2020

to test the HVPS normally you would cover the contact for the conditioning (pcr) roller which causes the entire drum to be energized. If this page comes out all black (or whatever color) then you know the HVPS is working and the problem lies elsewhere. Are these OEM or 3rd party cartridges because differences in toner formulation can cause light print issues. Also ensure that your firmware is up to date.

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I am a volunteer, offering my knowledge to support fellow users, I do not work for HP nor speak for HP.

king2525 · ‎06-11-2020

Thanks for the information. Is there a video tutorial available? The cartridges are 3rd party. The OEM cartridge expensive and cost about $300 for CMYK. That is incredibly expensive! The cost needs to come down. Thank you.

Repairatrooper · ‎06-11-2020

Check youtube there might be something.

As for the expense of OEM, with the number of topics you have had to post, many of which appear to be cartridge related I wonder how much you have saved, compared to the frustration you suffered and the time wasted?

If you find the information provided useful or solves your problems, help other users find the solution easier by marking my post as an accepted solution. Clicking "yes" on "was this reply helpful" also increases the chances that this solution will help others.
I am a volunteer, offering my knowledge to support fellow users, I do not work for HP nor speak for HP.

king2525 · ‎06-12-2020

Thank you for your message.

Youtube does not have this topic, that's why I asked in this forum. Yes its frustrating however, the point is HP toner cartridges should not retail $77 each. The reason why is the amount of units made are into the hundredths of thousands meaning production cost savings given the amount of units made in the factory, economies of scale. Most likely, the toner cartridges are made from another country then price should be even lower at retail. Its interesting to think about cost per unit. Let's think about it, if the unit cost to manufacture is $20 then the profit margin is 80.5% from the $77 retail price point? I don't think the the retail price of $77 is justified. Thank you for listening. I do appreciate your knowledge on laser printer tech.

HP Website Prices

$77 Cyan

$77 Yellow

$77 Magenta

$65 Black

Thank you.

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