Magenta Noise Issue - Prints - Noritsu 3300

[dailysetup]

Hi

Ive recently found this noise issue as pictured. I've swapped all the AOMs with other AOMs that I have and the issue went away for a few hours and then it return to the same.

What could be causing this?

Thanks

[yustas]

Usually, the cause of such magenta rain is a defective green laser module.
Please read more about it here

[dailysetup]

I just did a laser diagnostic and everything is fine at 75%. I did another test at 45% and the blue laser has error not the green.

Are there any other checks to do ? Perhaps Green AOM? or Perhaps cabling?

Thanks,

[dailysetup]

Update: I just turned the machine on and printed a daily setup . The print is now normal.

Could this be an issue with overheating or noise from power?
 

[dailysetup]

here is the print from the daily setup this morning. 
As you can see there is still a little bit of noise. Could this be due to interference? Cables are grounded? Should I try replacing the cables?

[Dave S]

The blue laser is weaker than the green so the % test numbers will be higher on the blue laser.
This kind of noise 99% of the time comes directly from the laser head itself.
The laser test is not helpful for diagnostics of this issue.
You can try swapping the green and blue driver boards around (assuming they are the same) it may solve the problem for a short while.
If that doesn't help the only solution is to have the green laser repaired/ replaced.

[yustas]

Laser diagnostic software has the wrong name and it confuses all people for many years.
It does not check the laser!
it shows the condition of all chain: AOM driver-cable-AOM crystal.

In your case, the green laser generates a magenta rain due to its weakness and must be replaced with new one or repaired.

We can help.

[purnomosetiawan]

some minilab owner just can't accept if their laser is gone....

[Bayazed]

Did u solve the problem.? 

I have same issue 

Edited November 1, 2023 by Bayazed

[Sunnie]

Setup on a Noritsu 3501 Plus.

What could be wrong?

[Dave S]

5 hours ago, Sunnie said:

Setup on a Noritsu 3501 Plus.

What could be wrong?

This is a different machine model, please start a new post with your exact machine model (click Start New Topic) otherwise the forum ends up a total mess.