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Don't waste your time. Replace the head

How was it used? What are the percentages of SMK1 and SMK3. When SMK1 is close to 100%, don't buy it.

A L315 does the CLC with the line sensor. This is not very accurate. ICC creation isn't possible at all. 36X or 5X0 have a more precise spectrometer for CLC and ICC creation. CLC is the HP term for density linearisation and density clipping. The bubble jet printheads are known for changing the...

BN-20 sounds strange, compared to "real" printers. I hate it, since it came to market...(stupid design) But it shouln'd really screech loudly.

How old is the printer? Could be something with the circulation pump.

Ever tried a different brand of media? Cleaning the rubbers of the feed roller might help as well.

was the cutter in heavy use? Then it could be the flat cable going to the toolhead.

Wow, I think I saw a dot on some of the bigger screws. (M3, M4) I have a bag of the small screws in my car. Have to check with a magnifier...

Swap the captops to test. It could also be a deformed nozzle plate on the cyan head.

If the encoder is very old, it can even happen with water...

The rail in a BN-20 runs dry. It has a self lubricating bushing.(could be graphite in the plastic) I have never had problems with big rail. Only once a clicking sound with the front rail.

Summa F cutters should have maintenance every 1000 working hours or every 12 months. Whatever comes first. One important thing is to check and adjust the tension of the 3 timing belts.

According to Roland, it's a Phillips screw. They sell a long Phillips bit to go with their torque driver. Since the carriage base is made of aluminum, it's also possible to strip the thread. II had to drill out such a screw once on a FJ-540. It was tightened by someone else before... While I...

The preview in Versaworks isn't that precise, when you zoom in very close. Calibrate print-cut at the machine. Print some black hairline squares with cutcontour exactly over it. Check if there is a consistent offset over a whole sheet. If needed, you can finetune the values in the calibration...

Pozidriv isn't the same as torx. It's a enhanced Philipps. I only use drivers from reputable companies like Swiss PB, or German Wiha or Wera. Life is too short to use mediocre tools. Their cost may seem a bit high, but it pays off over time. Some of them even give a liftime warranty.

Your chances aren't good for bringing the heads back to life. A head wash with cleaning solution isn't for long time storage. There is no official procedure from Roland for this scenario. Printheads have some sort of storage fluid in them when new. I never succeeded to fully revive a head after...

Hi While the way you describe the CLC workflow is correct, I think we need to be aware, that the 315 doesn't have a spectro and uses the line sensor as measuring device. This isn't a very precise way to measure densities. At least I would do a line sensor cleaning first and then a line sensor...

I think both magenta channels are used for printing.

Or you just create a spot color with the (exact) name CutColor in your design program.