To access the USER menu on the non-nav unit you press and hold the OPT button, but there is no selection that I am aware of for reversing the LCD display.

The User menu on the non-nav unit controls these functions:

• User memory
  • USER 1, 2, 3 -- Saves sound settings and the last received station when the unit was shut off.

• Mono/Stereo Setting
  • STO AUTO -- Allows the unit to switch from Stereo to Mono and back depending on reception.
  • STEREO -- Unit is always in Stereo mode
  • MONO -- Unit is always in Monoaural mode

• Driver L/R
  • DRIVER L or DRIVER R -- Selects the appropriate speaker side that a hands-free call is routed to if a hands-free phone is installed

• Telephone Mute Characteristics
  • PH MUTE -- Switches radio to mute during a call
  • AUDIO PH -- Telephone call routes through the car radio