CHASSIS ELECTRICAL ± Multi-Center Display <High Grade>
54A-86
(2) A colored bar will appear on the screen.
Press a function switch to change to another screen. The
screen will return to the service mode initial screen if the F1
switch is pressed.
4. AUDIO CHECKING
(1) If the F5 switch is pressed at the service mode initial
screen, the audio checking menu screen will appear.
(2) Next, press the function switches to carry out audio
checking.