Faded printout from HP Laserjet printer

[Patrick008]

HP Color laserjet pro-m176-m177 : unable to print properly, the print out has faded areas either at the top, middle or the bottom. Printer cartridges and Imaging drum are in good condition.

[Repairatrooper]

Please post a sample of the defect if you can. If the defects are repetitive down the page you can measure the distance between defects to determine which component is causing the problem. See chart below

[Patrick008]

Test PageTest Page without the top 3 linesOnly one-third of the full A4 page can be printed and the printout faded out for the remaining 2/3 of the page

[Patrick008]

The test page is shown above, and one of the test pages cannot show the 3 lines of words. 

The test page is also incomplete, and the color pattern faded out.

Another sample shows that the full A4 page can't be printed out properly.

Sometimes, only 1/3 (upper part) of the full page is printed.

Sometimes, only the lower part of the page is printed, and the pages faded out for the remining upper half, i.e. blank.

These pages are scanned by the printer, and the scanner is OK.

[Patrick008]

Another printout, and the faded areas cannot display the illustrations and texts clearly.

The page should be a colored page, but some colors don't come out.