The LCD screen corresponding to the 8-line Telephone access (TX3-8U) is barely visible?

This is a temperature issue:

  • The Lithium Crystal Display is freezing up. Ensure that the system has and inside heater (on a different power supply) has been installed within the TX3-8U/C unit; or
  • At the display board, change the value for the Graphic Adjust potentiometer to increase/decrease the contrast of the display until you get better result.

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