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You should have 8 channels. If you don't have white, one channel is missing (orange or red) You can try to run the machine in CMYK mode by activating the modes in Versaworks.

What does the internal test print look like? It bypasses the Rip. If this looks good, it's highly likely a Rip problem.

I wouldn't be aware, that those chips have a expiration date. The "sensor" are just two contacts, that could use a cleaning with alcohol or contact spray.

Exactly what I expected...

-10 doesn't sound good... I had to empty a R1000 for shipment. There is a procedure and a device you can borrow from HP. When the ink freezes in the tubing, it will destroy things I'm not aware, that something similar exists for the small printers.

The fuses for the printheads are on the carriage board on SG and VG printers. Not on the main, or head board, as they used to be on older printers with Epson heads.

The cartridges are slanted downwards a little bit on the HP 300 and 500 series. If there isn't enough ink throughput, the heavier pigments sink down and are consumed first.(if the cartridges aren't shaken every month or so) You can shake a cartridge as long as you want. When the pigment-heavy...

Looks like there was a head crash.

Replace the refill contraption...

Are the flat cables connected correctly?

I don't think so. I wouldn't know a parameter, not even in service mode.

There is a internal testprint when you edit your medium. This way you can bypass the Rip. If the reds are ok, then your rip is the problem, if not, it's the printer. By the way, shaking may not help to restore a expired cartridge...

I once had a similar problem on VS-640 and it was the scan motor. (the old one with the larger diameter gear...)

I wish you luck. There is the whole Flora kits, if you don't want to start with zero. (Especially in the flatbed area, there are many products made with these kits) I think Epson keeps some of it's secrets to themselves... especially since the started their surecolor series. Their print quality...

HP printers do their own thing internally. What they call "color calibration" is linearization and ink limiting. The Rip is driving these printers as so called composite devices. They send a CMYK Tif to the printer. The printer also does the dithering internally. The only thing, the Rip does in...

What should be the goal of this project? Do you want to get something printed in the end, or just burn your money and time??? (One of my hobbies is homebrewing of beer, but it would be cheaper (not better) to buy it, where I live.) I''m also a radio amateur and do some electronics tinkering and...

Are there real aftermarket printheads? I can't think of someone come up with the technology and knowhow for that price... maybe some shady "refurbishers-refillers".

The black deflection happening on DX4 with EcoMax ink is normal. Soaking never helped for me, because I think it's corrosion on the nozzle plate. Replace the head and switch to EcoMax2 ink and your head will work for years. (As long as the caps make a tight fit, the pump works and the wipers are...

It's definitely more complicated to replace a damper on a SG or VG. I woudn't know how to do it, without taking the printhead/damper combination out of the carriage. When you do that, you need to adjust the heads after you reinstall them. Therefore you need to be in service mode. (There is a...