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    -5v Power Supply [Screen PTR8100]

    Check pair of cables X807. They are uses to send power on signal to power supply. If contact is missed, power supply don't power on. You can short that contacts (with jumper) on power supply for test. If green LED has turned on - problem in this cables.
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    CTP Screen PT-R8000 Expoure head error

    It was motherboard. We replaced board from our new screen 4300, and now everything works.
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    CTP Screen PT-R8000 Expoure head error

    Ok, we reconnect 8 lasers from 32, and nothing happened. Also now error arises on half head (0-15) channels, about once on 8 plates. We think do not waste time and money on this machine now, and just will buy another CTP, and we will leave this machine as a spare option (and for the sake of...
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    CTP Screen PT-R8000 Expoure head error

    One of these days we will try reconnect (get out of the connector and insert back) all LD in head, maybe problem in some contact (somewhere there was such a case). However, I doubt that this will help, most likely the problem is really in cpu or driver board, maybe invisible crack or something...
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    CTP Screen PT-R8000 Expoure head error

    Hello, i have a strange problem here. CTP Screen PT-R8000 shows Expoure head error: Excessive current in the LD drive 1 (sometimes drive 2, very rare drive 3 and 4) while burning a plate. This is old problem, from the moment we bought machine (about 5 years), but until recently it happens about...

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