• Roland Printers

  roland cj500 only prints 3 colours

  Posted by Matthew Clarke on 25 September 2007 at 11:40

  hi the left head prints overlapped long rectangles but if i plug into the right head socket it prints the test squares as should. i think the driver must be broken any ideas or know what board i may need to change? thanks

  Matthew Clarke replied 17 years, 10 months ago 2 Members · 3 Replies
• 3 Replies

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  biruk

  Member

  21 November 2007 at 15:44

  Hi Matthew Clarke. Your printer problem is malfunctioning of a transistor (a three leg circuit unit on the head board which controls the color output of the head.) You can trace the faulty transistor on the head board by simply checking with ohmmeter. If you find two short circuit signals out of the three legs on a transistor, that is the faulty one.

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  Matthew Clarke

  Member

  26 November 2007 at 16:15

  can you tell me where to look? i have atatched links to pics of board thanks

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  Matthew Clarke

  Member

  26 November 2007 at 16:16

  quote Matthew Clarke:

  can you tell me where to look? i have atatched links to pics of board thanks

  
  
  
  

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