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Correct. Also correct.

You should be able to push the captop up and down freely. It should also be sitting level. Are you getting any ink drips on your prints? Also look at the bottom of the head after printing and see if there is any ink on the head.

Read this thread. Just back them on a folder on your desktop. https://www.signs101.com/threads/i-installed-versaworks-6-on-new-computer-how-do-i-get-my-old-jobs-from-old-computer-to-show-up-in-the-queues-and-job-log-on-the-new-computer.175134/#post-1627309

Remove the station assembly cover, do a hard clean and watch to see if ink is going through the tubes going from the cap to the pump. You should alternately see ink and air. You should also see a slight gap between the print head and the cap at different times during the cleaning cycle...

Check your messages...

Fuse location...

There are times when it's good to be wrong! Glad it was just a damper and not the print head.

Are the captops OEM or after market?

The XR-640 doesn't have the option of doing this, like the Epson does. Once you decide to replace the head, I offer phone support for this printer and have done several head replacements this way.

Here they are... my internet sometimes gets really slow out in the country...

That is the key sequence Roland puts in their manuals by default. It isn't meant to be correct, only to mislead. I'll attach 2 files later. Having upload issues. Your machine will likely use the old sequence.

Where the middle pinch rollers can cause "print quality" issues is on softer or thicker media, such as banner, when the roller creates a very tiny impression in the media, which shows up as a visible vertical line the width of the pinch roller. This is caused by a tiny difference in the distance...

I need to see pics of the edges on both sides of the fill test, close enough to see detail.

Chris, See attached...

Print the fill test pattern in service mode. Watch while it prints and see if you have any obvious banding during the print passes. When it's finished, examine the both edges of each color, take pics and post them please.

Good to know! Thanks! So many variations...

Another thought... I would bet your printer and software are configured as CMYKW. This would be why you get the "shake ink" message. That is usually when white ink is involved. The other inks should only be gently shaken when installing a new cartridge, and do not need to be shaken regularly...

Most likely head alignment. However, the question needs to include much more information, like brand, model, ink configuration, etc.

Power the printer off completely before you remove the ink cartridges and shake them. Roland chips only hold ink type info, not ink used. When you remove them with the power on, the printer assumes you are replacing an empty with a full one and resets the display. The cartridge will still stop...

Lost it years ago, darn it! Red handle flat blade with a clip and heat shrink on the shaft. Back in the days of tubes. First troubleshooting step was to look for a tube with a dead filament. Confirmation was to touch the glass top to see if it was hot or cold. After that, dig out the schematics...