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29430Re: [midatlanticretro] [Semi-OT] Dot Matrix Printer Help

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  • David Gesswein
    Feb 25, 2013
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      On Mon, Feb 25, 2013 at 12:59:33AM -0600, Kyle Owen wrote:
      > The DB-25 connector on the back
      > is actually part of a removable module.
      >
      I would pull the module and trace the wiring to the connector. Do one or
      both of pins 2 & 3 go to some RS-232 interface chip? Is 7 ground? Does
      the module have a UART on it? Is this the only connector on the printer?

      From which pin goes to the receiver you can tell if its wired DTE or DCE.
      You might need a null modem.
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