Yellow does not print

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JDMusicLabs
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Yellow does not print

Post by JDMusicLabs » Mon Jul 15, 2019 3:28 pm

Hello,

So, last week I used the machine and everything was perfect. After that job I cleaned the machine like normally do and today (Monday) before I started the work I did a print test to see if everything was ok and the yellow is missing.
It is really strange why the yellow is missing completely, nothing is printed and is the only color in this situation.

The cartridges did not expired;
I perform the cleaning after each job;
I did a medium and powerful cleaning after the test print and it's still the same.

Any idea?

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Kai Perry
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Re: Yellow does not print

Post by Kai Perry » Mon Jul 15, 2019 4:00 pm

Do a manual clean, just to check that nothing is on the print head.
Kai Perry
Application Engineer
Roland DG (UK) Ltd
http://www.rolanddg.co.uk

JDMusicLabs
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Re: Yellow does not print

Post by JDMusicLabs » Mon Jul 15, 2019 4:44 pm

I already did that. Twice actually.

PhillyDee
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Re: Yellow does not print

Post by PhillyDee » Mon Jul 15, 2019 5:22 pm

Funnily enough, 2 weeks ago I had the same issue. Most yellow nozzles were missing, and different ones came back each clean. Got an engineer out, and he diagnosed a dodgy damper (2 years old) which had black ink in it. He wasn't quite sure how or why, and he had never seen it before. Luckily he did a lot of tests etc and managed to get the head back to condition.
Roland BN-20 (CMYKWh)
Roland Versa UV LEF-20 (CMYK Pr Wh)
HPC Laser - LS1290PRO 80W Laser cutter/engraver x4
HPC Laser - LS6090PRO 80W Laser cutter/engraver x2
Trotec Speedy 300 120W with JC Vision Camera system and rotary axis.
30W Galvo Fiber Laser Engraver

JDMusicLabs
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Re: Yellow does not print

Post by JDMusicLabs » Mon Jul 15, 2019 5:32 pm

Do you know exactly what he did?

PhillyDee
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Re: Yellow does not print

Post by PhillyDee » Tue Jul 16, 2019 3:11 pm

Replaced the damper was the hardware, but it could easily of been a knackered head.... He also did numerous cleans etc of just the yellow channel
Roland BN-20 (CMYKWh)
Roland Versa UV LEF-20 (CMYK Pr Wh)
HPC Laser - LS1290PRO 80W Laser cutter/engraver x4
HPC Laser - LS6090PRO 80W Laser cutter/engraver x2
Trotec Speedy 300 120W with JC Vision Camera system and rotary axis.
30W Galvo Fiber Laser Engraver

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