JFX200 Issue - I'm Stumped!

[Solventinkjet]

I am working on a JFX200 and have a weird issue going on. It's a CMYKWW setup. The original problem was the number 8 channel had a Sub Tank sensor error. We changed the sensors and the sub tank. Now we get sub tank overflow errors in channel 8 but there is no overflow. In fact there is no ink in that tank at all. We have determined that ink is able to flow through channel 8 into the sub tank by tricking the machine by swapping the sub tank sensors between the 1 and 2 head. The issue is that because the machine thinks there is an overflow in channel 8, it prevents the channel 8 pump form pumping so it never fills up but it still thinks there is an overflow so it's in a vicious cycle of filling the other 3 channels, erroring out and then trying to refill again. What am I missing!?

 

[L.D]

When you tricked the machine did the error on channel 8 move another channel?

 

[humen2]

Hi,
Same issue here.
Working with jfx1631 plus.
Ink set mmccyykk nnnnnnnn
On the 8 head (16 channel), having trouble with the ink level, and it's a head that not included in the ink set.
Did you figure out the problem?

 

[Solventinkjet]

Hi,
Same issue here.
Working with jfx1631 plus.
Ink set mmccyykk nnnnnnnn
On the 8 head (16 channel), having trouble with the ink level, and it's a head that not included in the ink set.
Did you figure out the problem?

If I remember correctly, it ended up being an old filter and bad bottle holder.

 

[humen2]

Some parts of our printer is patches that I've made or modified.
By purpose, no air pressure or ink delivered to the right side of the carriage.
What I did today to fix the subtank/slider error was to reset some of the parameters (ink1-flt err/tnk err/spy err/rt err).
Hope it will last!!!