Does anyone have any technical expertise or information regarding an Pentax PCS-1 total station, on power up the instrument displays: error code E31 EDM initial error and none of the input keys will respond. If anyone knows how to trouble shoot and locate the source of this trouble code error I would appreciate a responce. I can't obtain any information or diagrams from Pentax, so any information or input regarding this problem would of great help to me. Regards, Jerry
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