Lexmark Optra Optra T Administrator's Manual page 141

Problem
Option does not operate
correctly after it is installed.
Solving Printer Problems
Action
Tri-Port interface: Make sure the Tri-Port interface card is securely connected to the printer system board.
For Macintosh users:
• Make sure the host computer is set to LocalTalk.
• If you are using a phone wire connection, a terminator plug must be used.
Infrared adapter: If infrared communication stops or does not occur, check the following:
• Communication distance: The distance between the two infrared ports should be 1 meters (39 in.) or less. If
communication does not occur between ports, move the ports closer together.
• Make sure both ports are stable.
• Make sure the computer and the printer are on a level surface.
• Make sure the angle of communication between the two infrared ports is within 15 degrees of either side of an
imaginary line drawn between the two infrared ports.
• Make sure there is no bright light, such as direct sunshine, interfering with communication.
• Make sure no objects are placed between the two infrared ports.
USB/Parallel interface:
• Make sure the USB/Parallel interface card is securely connected to the printer system board.
• Make sure you are using the correct cable and that it is securely connected.
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