Need Urgent Help (Roland SP300)

[FALCON]

Hi, my device got into trouble after a long time, it did not print at all at first, after I searched the Internet, I replaced the 4 Ribbon cable , and also had two fuses on the main board (shown in the attached image), the head They are perfectly clean and all the components are supposedly normal, but the printing is not done properly. (Image samples are included in the printout). Please help me

 

[FALCON]

anybody here?

 

[Texas_Signmaker]

Do a nozzle check test print and post that... Seems you've got several colors missing.

 

[FALCON]

Ok, thanks for your attention

 

[FALCON]

Images of check nozzles, 4 cables and 2 fuses were replaced, each of the 2 heads was cleaned with a special wash solution. The nozzle colors of the check are very pale.

Also, in photo 5, after a checkout nozzle, a print sample is sent that is very poor quality (with the specified arrow)

 

[FALCON]

anybody

 

[player]

Not help, but I ran wires from the fuses to a new fuse holder so I could change them out. Much easier to solder the wires onto the existing lugs. I did not remove the bad fuses.

 

[FALCON]

Not help, but I ran wires from the fuses to a new fuse holder so I could change them out. Much easier to solder the wires onto the existing lugs. I did not remove the bad fuses.

The fuses are checked. They are healthy
Is it possible to fuse? The factory fuse is 1.6 amps, but replaced with a 1.5-amp model last week.

 

[Texas_Signmaker]

Getting a lower rated fuse only means it will blow at a lower voltage...so as long as it's closed you're ok. Dont think .1v would make that big a difference.

I duno what to make of that test print. Kinda looks like magenta is bleeding into yellow and half of the nozzles are not firing...then again you got all the black with that digital static looking thing so ... I duno.

 

[signage]

fuse don't blow/open on voltage! They open on current/amps!

 

[FALCON]

Thanks for your guidance
Can you tell me what to do?
How can I know if the head is healthy or damaged? All head nozzles are open and there is no apparent objection.

 

[Texas_Signmaker]

fuse don't blow/open on voltage! They open on current/amps!

You're right I knew I got that wrong once I posted lol

 

[hand851]

You need new heads. replace heads, dampers, cap and pump. Start with pump first see if it gats any better. The magenta damper is bad (leaking).

 

[FALCON]

You need new heads. replace heads, dampers, cap and pump. Start with pump first see if it gats any better. The magenta damper is bad (leaking).

Are you sure the problem is head And not from the mainboard?

 

[methogod]

roland facebook group will be more helpful.. techs there.

 

[hand851]

no it is the heads. The main board is working or you would not get any ink jetting. It's the heads.