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Recent content by Blue Flash Dave

  1. Blue Flash Dave

    Helium Cadmium Laser Help (Omnichrome series 74)

    Ahhh...that would explain the cables ! The manual was shipped with the LC500 and, stupidly, I never occurred to me that it wasn't the right one. So - I think to myself 'are the cables correct for the Head - they too were shipped with the LC500' ?! I'm glad to hear you have a Series 74 : In...
  2. Blue Flash Dave

    Helium Cadmium Laser Help (Omnichrome series 74)

    Thanks UK : it's good to know that K2 should be empty ! The 6 blink code on the LC500 is simply described as "Laser Head Read Error". Reading the manual, I cannot see any reference to a specific 'read' event - and interpret this as being the LC500 'looking' for a particular voltage on one of...
  3. Blue Flash Dave

    Helium Cadmium Laser Help (Omnichrome series 74)

    Hello ! I've finally found people who appear to know all about Omnichrome series 74. I dont suppose you have the circuit diagram for the head : only I cannot get the head to lase. The LC controller starts the sequence, the heater glows, the fan turns on and everything seems OK. But then after...
  4. Blue Flash Dave

    Helium Cadmium Laser Help (Omnichrome series 74)

    Hello ! I've finally found people who appear to know all about Omnichrome series 74. I dont suppose you have the circuit diagram for the head : only I cannot get the head to lase. It appears to try to start but the LC controller stops after 15 seconds and shuts it down. The error code is not...




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