STEP 4. Substitute a known good multivision display, and check the trouble symptom.
(1) Temporarily replace the multivision display.
(2) Start the multivision display.
(3) On the "Home" screen, to select "GPS Information."
(4) Check if the GPS signals are being received after 5 minutes have elapsed.
Is the check result normal?
Replace the multivision display (Refer to ). Replace the GPS antenna (Refer to ).