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holes around cables in laser unit !!!!!!!!!


soofezz
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for more than laser unit in fuji 370s i saw a holes around the wires which is going through laser unit so dirt can easely going inside to crystals and mirrors

i dont know if it should be open area for air or to keep tempreture ???

already i covered these holes because when i opened the laser unit 2months ago a saw morrors and crystals and lasers generators and lens was fully of dirt

someone can tell me if i was wrong!!

by the way i opened it after (sos detection fail) then it works good

thanks

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These holes should not be covered with any material at any time!

Better to pay your attention to the fan filters and ambient anti-dust condition.

If you found a lot of dust on the mirrors - never touch it by hand!

Otherwise you have a risk to loose your mirrors cuase it cannot be sold separetaly.

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thanks for reply

but could you tell me what these holes useful for?

because at first time when i got an sos error and after i cleaned the laser unit (the all) the photoes became mor clear and high contrast

so i thought it should be clean all the time

thanx again

i wish you help me in my other problem (i have no black color its allways dark green)

best regards

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Covering the holes will help keep dust out of the optical section. It is quite surprising that Fuji leaves so many openings around the cables. Many people will tell you that you need the cooling so do not block the holes. This is wrong. The heating and cooling of the lasers are accomplished using a TEC cooler which transfers heat to and from the base of the unit. While it is true that you want to maintain the filters and fans to keep the air around the laser unit clean and cool, it is not good to have air moving in and out of the unit itself because it will carry dust which will cause the problem you had. The better you can seal the openings in the laser section the longer it will stay clean.

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thanks for reply

but could you tell me what these holes useful for?

It is difficult to judge what holes you mean here.

Better to place a picture here and we will tell you what to do with those holes.

It is up to you to cover it or not - but think twice before doing something with laser unit. Better to ask,

if you look at the bottom of your laser unit you wll see that there  is a long HOLE covered by metal shield

Sometimes motor opens it and close... Laser beam goes out from there... you also want to cover it?  :) :)

i wish you help me in my other problem (i have no black color its allways dark green)

if you have a greenesh black colour- AOM (crystal) inside your laser unit need to be revised.

Note: I think so.

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:(thanx for reply dear

i know the hole in the buttom it is the anti dust shutter which is protected be fans and filters to brevent dusty air from entering to laser unit

so this mean there is no dust should inter inside, then what is the meaning of leaving opening holes around wires!!!

and if dust doesnt affect laser heads and crystals why i have to clean it and clean the small mirror of the sensor whenever i had an SOS detection fail

and if these opening is nessesary for cooling i  think fujifilm need to but anti dust filtered fans

  :(

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The section that is protected by the fans and filters is completely sealed and isolated from the section where the wires go into. The sensor for the SOS signal is also in this section. Filters are not perfect. They will keep the dust out that is big enough to cause lines in your prints. However very fine dust and gasses can get through and over time they can develop into a film which can cause SOS errors. It is extremely rare but I have seen it happen. The section with the wires going into it does not have anything to cause air circulation so I am sure Fuji's logic was that the openings should not be a problem. On there later units they seal these opening much better. If you want to seal them with a plastic sheet and tape that would help to keep dust out of there.

Back to your black/green problem: As Yustas said it could be a bad/contaminated crystal in your AOM inside the laser unit. However it is more likely an alignment problem. Not enough of the green laser is getting to the paper to create a deep black. Low green power creates a green tint to the paper.

Can you post a shot of the "Laser Exposure Check" screen here to see if your green laser could be turned up a little?

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