Need Help Lines when printing Magenta CJV150-130BS

[pedrojt]

Hello. I've been facing this issue for about 2 months, new ink and new media but it keeps printing these lines, and there are some white spots. It looks like it only happens when the image contains magenta in it, as you can see in the first image. I tried all kinds of cleaning and alignment and nothing happens. Maybe I have to change the damper? If that's the case how can I know wich one to change, since there is a damper with Magenta/Yellow, and one with Magenta/Cyan. Thanks.

note: these tests were print on bidirectional 720x1440, I've always used these settings and it wasn't bad like now.
note2: also noticed that the magenta in the test print looks thicker, don't know why.

 

[Smoke_Jaguar]

Probably dampers, could be ink starvation. On test prints the ink has a chance to catch up so to speak.

 

[pedrojt]

Probably dampers, could be ink starvation. On test prints the ink has a chance to catch up so to speak.

Is there a test I can do to see wich damper I have to change? I got a brand new damper here, but it's only one.

 

[Smoke_Jaguar]

Print in unidirectional mode and then unidirectional but reverse direction. If printing to the left, likely the left side one and vice versa. Setting in the Q menu in RasterLink.

 

[pedrojt]

How do I print unidirectional in reverse?