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- HP Officejet Pro 7740 not printing A3 in color

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10-09-2023 04:07 AM
I have bought a new Officejet Pro 7740.
It correctly prints A4 from tray 1 in color.
But the A3 prints from tray 2 are black&white,
I run Windows 11 Home.
Installing and running HP Smart did not help solving the problem.
Please help.
Solved! Go to Solution.
10-10-2023 07:24 AM - edited 10-10-2023 07:27 AM
My 7740 works perfect in A4 (Windows 11, latest Firmware EDWINXPP1N002.23368.00 / 2023-09-07).
The same document on A3: colors change to gray scale, print quality deteriorates: distorted characters, almost like smearing
FerRX' solution did not work, re-adjusting and cleaning heads didn't either.
Have the printer a long time. I believe the problem appeared with the last Firmware Update