HP Color LaserJet CP3505X
Printer is READY online, but it just print out blank paper on any job. The engine test is also the same. Any fellow here cross this problem please advise

Experienced technical support provide their insights in answering this question :
Without seeing the printer, the only thing that would cause blank pages without an error code is lack of High Voltage. The printer can’t see whether high voltage is present or not so it will print and the page will be blank because there is no charge to the toner cartridges or paper.

How to Identify and Fix Common printer Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced technical support :

If your printer is running low on ink, it may start printing blank pages. To check your ink levels, go to your printer`s control panel and select the Ink Levels option. Whenever the ink levels are low, replace the cartridges with new ones. You can also try shaking the cartridge gently to redistribute the ink.
There are numerous possible causes for a printer that`s randomly producing blanks. The most common ones are empty ink cartridges, improper cartridge installation, and congested nozzles. Driver and software issues can sometimes cause this problem as well.
Several factors may cause the product to print blank pages, such as print settings, low ink, or the product itself. Check the following: Make sure the product is placed on a flat, stable surface that extends beyond the base in all directions. The product won`t operate properly if it`s tilted or at an angle.
Reasons why your HP printer has ink but won`t print

This may seem obvious, but it sometimes happens: first make sure your paper tray has paper in it. Misalignment, clogged printheads, faulty data communication or insufficient ink levels can also be sources of the problem.

This means the printer is starved of the data it needs to keep printing. Some printers will pause and keep trying, for a little while, but many will just give up at this point and spit out your half printed page. So – the moral of the story is really to always use a wired connection if at all possible.
Locate the [Printer Separator Page] button on the lower left of the screen and select it. To turn Off the Banner Page (Separator Page) delete any information in the Separator Page field and select [Ok] to save it. NOTE: You must have Manage Printers permission, which is one of several printer permissions.
The paper might not be engaged with the feed rollers. The paper-width guide is pressed against the paper stack too tightly. The paper tray is not completely inserted into the product. The paper settings in the print driver do not match the paper loaded in the paper tray.
Check the ink levels

Sometimes, the printer may not print black ink because it is low or empty. You can check the ink levels on the printer`s display, or by using the software that came with your printer. If the ink level is low, replace the cartridge or refill it according to the manufacturer`s instructions.

If you get a protected pdf file, it`s possible that `printing` is turned off. If you try to print this page the printer will print our a blank page with no error! If you have the password to the document you can turn printing back on.
If your HP printer not printing black ink correctly, here`s what you should do. Using non-genuine ink cartridges. Printheads that have become clogged. Ink cartridges that are defective or empty.
If the ink level is sufficient, but the printer still does not print black ink, you may need to run a cleaning cycle. A cleaning cycle is a process that cleans the printer heads and removes any clogged or dried ink.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

My printer feeds through one piece of paper all the way and then a half piece of paper and stops. I pull out the paper to stop the paper jam and then it prints but sounds rough. After printing, it doesn't feed the paper all the way through.
ANSWER : And the first 2 sheets, the full and half sheet that go through first, are blank.

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HP Color LaserJet CP3505X

Print Blank paper
ANSWER : Without seeing the printer, the only thing that would cause blank pages without an error code is lack of High Voltage. The printer can’t see whether high voltage is present or not so it will print and the page will be blank because there is no charge to the toner cartridges or paper.

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HP Color LaserJet CP3505X

Prints blank pages, won't print from computer
ANSWER : Don’t know why you replaced the fuser, but assuming you had print before, then it must have been something you did during the procedure. Only thing I can suggest is to recheck your work. Just because you reinstalled a connector doesn’t mean that it is seated firmly enough to work. Any flat ribbon connectors that you removed and reinstalled, check to see that the contacts are all flat and not peeled back.

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HP Color LaserJet CP3505X

printing blank pages
ANSWER : You can’t let an inkjet printer sit that long. Try flushing the heads. Take out all the ink tanks and to the right of the assy. you will see a plastic lever. Lift it and it will release the heads. Take it to the sink and using hot running water, flush it from top and bottom several times. Then blot it dry and reinstall.

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HP Color LaserJet CP3505X

Paper jam in front of print head. HELP URGENT Please
ANSWER : I am 99% sure you don’t have a problem with a sensor. Having no idea what you do in the cleaning process, and not being able to look at the printer, there is no way to help or advise you.

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HP Color LaserJet CP3505X

paper drive wont accept paper
ANSWER : There is probably a small scrap of paper stuck at the left edge of the paper path. The paper hits it and skews to the left. The smaller size bypasses it. You need to shove something stiff, like a piece of file folder, down the paper path and attempt to dislodge it.

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HP Color LaserJet CP3505X

when printing front and back, the front will print well but the back will fade
ANSWER : It happens because second side voltage is much higher and the board breaks. Are you getting this issue in auto duplex only, or same error you are getting when you print second side manually?

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HP Color LaserJet CP3505X

Paper feeds straight through without printing on an Epson R2400
ANSWER : I was able to get it to print the internal test page by holding down the sheet paper feed button while turning the machine on — then continuing to hold the sheet paper feed button. It took several attempts, feeding a page straight through, but eventually it caught the sheet and printed. So it may be a timing issue as others have mentioned. It could still mean that the feed rollers are worn out. The back side of the large D-shaped feed roller has visible abrasion on it. The abrasion is difficult to see as the roller does not stay with the flat side exposed.

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HP Color LaserJet CP3505X