• I want to thank all the members that have upgraded your accounts. I truly appreciate your support of the site monetarily. Supporting the site keeps this site up and running as a lot of work daily goes on behind the scenes. Click to Support Signs101 ...

Ucjv300 changed from lus200 to lus 175. Help needed

signguy85

New Member
On subtank 2 I had to swap 25 and 26 around. Strange it didn't toss an error. Subtank 1 (1-4) float sensors are correct placement.

When i start the machine and hold func 1+3 and it loads the service menu, when I hit esc twice to get to the menu where it has #adjust,#adjust(cut), #test, ..etc. it never let's me use that particular menu and rather it boots the printer normally. I dont understand how 1 time I was able to access it and it loaded. Any ideas?

Im at a loss on what the problem is. I wouldn't think the subtank would be bad because the float sensors were in right order but who knows. Its odd that subtank 2 (5-8) didn't display an error for the swapped around sensors.

Any ideas on how to diagnose this? I couldn't find the float test procedure in the manual but I doubt that would benefit since the dang menu won't stay open
 

Smoke_Jaguar

Man who touches printers inappropriately.
Printers are dumb, errors tend to be on really specific cases of when the right logic is tripped. The main errors for subtanks are overflow with the ink going to limit of sensor and time-outs where the ink valve is opened and the sensor doesn't make it to the high/full state in the allotted period of time. It doesn't know or care if things are in order, it basically 'assumes' things are installed correctly. Otherwise, the printer would have to fill and flush every channel and monitor float sensor status to verify each ink line was working with each float. Even then, the lines could still be installed wrong on the subtank. The stuff you're doing isn't in the 'user realm' and, as such, is far from user-friendly. That's why we techs (well, the smart ones, not me) charge the big bucks.

As for the float test procedure, there isn't one. Can test the sensors using a screwdriver in #TEST>Sensor mode. As far as the service modes disappearing after pressing Esc (END?), not sure what is going on there. Should have access to menus until you reboot, and you access those from the home screen by pressing FUNC1 and scrolling to the last 2 of the 5 pages.

Ink not filling can be related to ink lines, valves, or pressure/vacuum. Not really willing to put in a ton of time doing troubleshooting over a forum, could take days. If the sensors got installed, make sure the ink lines weren't installed wrong as well. Take some pictures too, those can be a big help.
 

signguy85

New Member
I believe that. I learned a cnc and I realized quickly that machines run as well as the programming that went into them, everything "externally influenced" does not compute haha.

So seeing that Subtank 1 was not filling, I decided to remove to check. It turns out only 1 of 4 ink channels are filling. I cross referenced the manuals diagram for float sensors paired with ink channel # and the channel hoses and float sensors match to the subtank. So hose routing is good. I also checked for ink in the lines above the subtank. There's ink in the line where that channel appears empty in the subtank.

A bit distressing after buying it for 12.5k and spending another 2000 in parts and ink to have no way for it to earn that money back lol.

I was told that the ink recirculating pumps need to be removed from this equation as im no longer running white, so I removed and rehosed their routing for thr channels and effectively removed the circulating pumps from the system. Wondering if they need to be capped off as maybe this is a leak in the system but I need to review the data sheet first.


Also it seems to be stuck in a loop for the ink set. I changed the value to ff00 in the service menu, but it just wants to keep going through and landing on MC or C and loops. Here's a video that shows it.

 

Attachments

  • Screenshot_20250919_184517_Gallery.jpg
    Screenshot_20250919_184517_Gallery.jpg
    1.9 MB · Views: 3
  • Screenshot_20250919_184513_Gallery.jpg
    Screenshot_20250919_184513_Gallery.jpg
    1.7 MB · Views: 3
Last edited:

signguy85

New Member
So I took off the lines at the subtanks because I really was not convinced it could push all that ink through the lines and figured that could be an issue. I used a syringe to draw the ink through the new lines while holding the ts valve open and "primed" the hoses, installed to subtank and no more overflow condition. I also removed the ink from the overflow channel subtank through the bottom port in the set of 4. Its currently going through fill up so I hope for the best. I can tell that subtank 1 on the left side, both channels are about the same level of ink. When one used to be empty, the other full.
 

signguy85

New Member
Printers are dumb, errors tend to be on really specific cases of when the right logic is tripped. The main errors for subtanks are overflow with the ink going to limit of sensor and time-outs where the ink valve is opened and the sensor doesn't make it to the high/full state in the allotted period of time. It doesn't know or care if things are in order, it basically 'assumes' things are installed correctly. Otherwise, the printer would have to fill and flush every channel and monitor float sensor status to verify each ink line was working with each float. Even then, the lines could still be installed wrong on the subtank. The stuff you're doing isn't in the 'user realm' and, as such, is far from user-friendly. That's why we techs (well, the smart ones, not me) charge the big bucks.

As for the float test procedure, there isn't one. Can test the sensors using a screwdriver in #TEST>Sensor mode. As far as the service modes disappearing after pressing Esc (END?), not sure what is going on there. Should have access to menus until you reboot, and you access those from the home screen by pressing FUNC1 and scrolling to the last 2 of the 5 pages.

Ink not filling can be related to ink lines, valves, or pressure/vacuum. Not really willing to put in a ton of time doing troubleshooting over a forum, could take days. If the sensors got installed, make sure the ink lines weren't installed wrong as well. Take some pictures too, those can be a big help.
After priming the hoses it went to air purge. Channel 1,2,4 i was able to bleed. Channel 3 i couldn't get a flow through the air port. "Error 620, positive p. Not enough". Battling this dumpster fire

Update: set positive pressure to 17.4 going to test the ink fill again
 
Last edited:

Smoke_Jaguar

Man who touches printers inappropriately.
Your colors are all wobby-jonked. For 4 color, there should only be one of each CMYK per subtank. If you changed around the ink-fill lines, you're going to have some major headaches. Changing inks means leaving all the lines the same, with the exception of terminating the white circulation circuits.

Manually priming ink causes major issues if not careful. The reason the vacuum/pressure system exists is to expedite filling of the subtanks with vacuum and purging with pressure. Ink swaps like this are usually a 2-hour job with practice. Most of that is waiting on fill-ups.

1758333365491.png
 

signguy85

New Member
Your colors are all wobby-jonked. For 4 color, there should only be one of each CMYK per subtank. If you changed around the ink-fill lines, you're going to have some major headaches. Changing inks means leaving all the lines the same, with the exception of terminating the white circulation circuits.

Manually priming ink causes major issues if not careful. The reason the vacuum/pressure system exists is to expedite filling of the subtanks with vacuum and purging with pressure. Ink swaps like this are usually a 2-hour job with practice. Most of that is waiting on fill-ups.

View attachment 179197
 

signguy85

New Member
The layout posted above is how my inks are arranged. CMYKYKMC.
The subtank was just stained from what was in the lines/bottle tanks. I wonder if the major problem was the positive pressure. It was reading 28, lowered it and locked down to 17.4 so almost dead on 17.5 as recommend. So far so good.

When i mentioned changing ink lines i just meant replaced the old. Everything is the same besides removing the white circulation pumps from the system, and their tubing.

It went through full up but.is now stuck at "fill up ink **cleaning** please wait. Been like that for a hour or so. It did tell me to replace wiper so wondering if that is the cause for the stall or should it take this long?
 
Top