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While I agree with all the above TS. My bet is going to be coolant scale built up inside the pump/radiator and or the intake fans/filters by the radiator being clogged on the service end of the machine. Ive had to literally vacuum that filter area with a shop vac, like WTF man you have barn cats...

with all do respect, ive worked on these and they are sub at best unless you have an engineering degree, plenty of confidence in you solidworks capability, and a ton of leeway on fiances. That material that gets extruded is ridiculously expensive and unless its post UV processed will absolutely...

Check out https://www.3dplatform.com/ They have a 1m x1m build area. I used to work there and they are pretty badass for the price for the size of stuff you can build on these things. I bought one wholesale on a repo because I was a service manager there and if you have the space man, the sky...

M801338 Cap positioning SP

Check Fuse F4 on main board (EPL) i believe its at the bottom next to a white ribbon cable. Should be marked F4

Check capping

Move your media over to the right side line on the platen?

Service mode/#adjust/capping Make adjustment so that the clearance between the head and uppermost point of the cap is set at 0.5 mm.

if you look at the picture of the bottom of the head you can see the inkline from the capping station and it looks off center to me witch would introduce air while cleaning etc. I would double check the cap adjust settings

looking at your test draw i'd take a look at your capping. if it hasn't been changed that would be where I would start first. Not familiar with the vendor of the head but some are re-manufactured and could be the issue as well.

A pair JFX200ex's will keep your budget low and get the job done I believe. Work horses also.

Might have taken out the regen resistance board. try swapping that from the doner to be sure.

https://www.thinkarcoa.com

Unfortunately not

Yes, but there are also manual and electronic alignments in service mode for all the DPI that should be checked also. Its a pretty tedious process and you need a scope to do it correctly.

Has anyone checked the alignments yet?

If your still getting the 711 error its probably cooked the central I/O and or the UVLED driver board(s). Couple of things to double check are the fans for the UV driver boards in the carriage are functioning properly. Also the radiator fans behind the carriage service area, this is a good time...

No errors?

Empty out the coolant mix and refill back up with CLR or a calcium remover of some sort. Go into #test and run the pump for about a half hour to ensure it cycles through the lamp water jackets thoroughly. Drain again and refill with Distilled water only to rinse. Then refill with the mix. Rest...

Crash/jam guards are not triggered? I cant think of anything else.