HP Envy Pro 6452 Setup - Troubleshooting

Get the lint-free cloth for cleaning the printer, and have the paper sheet handy to lace it on the cartridge.
Then, enable the printer to provide power to it.
Unveil the cartridge access door, and take a look at the access area.
Cut off the power connection. Gently, tap the cartridge tab to release it.
Check the printer contacts for ink debris and smudges.
Clean the debris, and check the cartridge for damage.
If you find the damaged ink cartridge, throw it away and attach a new 123.hp.com/setup 6452 ink cartridge.

HP Envy Pro 6452 Paper Mismatch Error

Due to various reasons, this error shows up on the printer. Always make sure that you are using the recommended envelopes and paper sizes and types.
To adjust the paper size, follow the below instructions.
Click the File to select the required document, and choose your 123hp.com/setup6452 printer from the drop-down list.
Choose Printer Properties or Preferences for amending the settings you want.
For reflection of the changes made on the settings, save it properly.

On your Windows computer, get the Run windows using shortcut keys.
Enter services.msc in that Run box. You will get the Services window displayed on the screen.
Right-click the Print Spooler from the list and choose Stop.
Move to the C: Windows > System32 > spool > Printers and remove all the files.
Restart Print Spooler service with the help of Start option. Highlight the Print Spooler in the Service window.

The quality of the scanning documents decreases when the scanner bed has some smudges or dirt.
You need to assure that the issue is with the scanner and not with the printing.
Raise the lid and spray glass cleaner and clean it. Close the lid once cleaned.
Place the documents that are in good condition.
Sometimes, calibrating the device and resetting the 123.hp.com/envy6452 printer may fix the problem soon.
Try to scan after increasing the resolution or the contrast.