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People pay too much attention to the price of the ink cartridge. What's important is the cost of the ink per square foot on the finished product. Saving $15-$30 on an ink cartridge and then having to pay hundreds and thousands in repairs and lost business due to down time because of ink issues...

Who did you order from? Please let us know who and we can give you our opinion. 2 week delivery sounds like a China company with a USA office to fool people. If you are suspicious, cancel the order and go with Solventinkjet.com. They only sell Roland OEM caps. Their DX4 dampers are aftermarket...

Just make sure the caps are Roland OEM caps.

Realistically, after that long you should replace the caps, wipers and dampers. I would suspect you will probably find the caps to be the source of your issue, with the rubber edges having gotten hard and not sealing well. Also, the O-rings in the bottom of the dampers have probably dried out...

Posted something for a different thread... need more coffee!

It's a phillips screw, The proper screwdriver is a PH1 (not PH#1). https://www.amazon.com/gp/product/B01C597GNM/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1 The long PH1 in this set is my go-to screwdriver for working with printheads.

Make sure the lines from the black/yellow channels are clear and the pump for those channels is working. You can swap the lines from the cyan/magenta pump with the black/yellow pump at the pumps and run a cleaning cycle to see what happens. After that, depending upon the result, since you have...

When you replace the dampers, you should always clean the manifold post with a foam swab moistened with cleaning solution before installing the new damper. I noticed what looks like some possible dried ink near the bottom of the post. This could lead to an air leak where the dried ink doesn't...

So, even if the ink configuation is set to CMYKM, the second magenta channel is not used during actual printing?

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.