PT-R 8600 problem

gsherrold

Active member
Hello everyone,

I have a problem with a head driver board from my platerite.
Does anyone know where I can find a refurbished & used one?

Thanks.
 

NJservice

Well-known member
I have driver boards for the 8000/4000 series, but the 8600 just has 2 large driver boards, 32 channels each. It looks expensive. Are we sure that's the problem?
It will be hard to find one of these used, unless an 8600 was damaged in shipping and scrapped for parts, which would be rare.
 

ansoft

Well-known member
Hi,
Try checking the cables before you suspect the boards. It is very rare to have defective board.
They are really expensive :(

What is the error message yo have?

Regards!
 

NJservice

Well-known member
I agree with Ansoft, cables are 20x's more likely the problem than the expensive board.
I've never had to change one, but they do make them replaceable for a reason I guess.
Hope you didn't win that 'unfortunate lottery'!
 

gsherrold

Active member
Hello, friends!

First of all, thanks very much for all the answers.

I've got the following message:
Exd04 - Excessive current in the LD drive (driver 2 board block 2)

As this platesetter has 2 head driver board, I've tried to switch them and see what happens (I've changed the dip switches and jumpers of each one). And the message changed for the same "defective" board:
Exd02 - Excessive current in the LD drive (driver 1 board block 2)

If the problem could be some cables, I don't know which one could be.

Please if anyone has some advice, I will be very thankful
 

alekbelia

Active member
I had the same message when replacing the ld. I forgot to connect the ld and got the same message.
The colleagues are correct about the possibility that the issue is with connectors, etc.
When I bought my 8600, there was soft damaged connector and the ctp produced from time to time thin lines over all plates. It was tricky to find this problem.
 

NJservice

Well-known member
Did you physically swap the boards, or just the ID dip switch identifiers?
If not, it could be a bad LD or even dirty optics.
Even on 32 channel heads a dirty optical path will increase the current and lead to
high current errors and high Iop numbers.
How are the Iop/Iopd numbers on your machine?
 

gsherrold

Active member
I physically swaped the boards, and the message turns to the same board. (As you could note in the error messages, the "defective" board switched from 2 to 1)

I couldn't calibrate the laser diodes, so the Iop values aren't accurated.
But if I go the Iop values screen (last successful measure), they seem to be OK.
 

ansoft

Well-known member
Try to clean up the connectors and try again. Switch off and on every one LD connector. Clean the optics and check VP41 (M41). Switch off the pump M41 and try again. If these does not help you, try to find another board just for the check. After this, you must buy another board. Do you remember something wrong with the power supply?
Regards!
 

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