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5. MAINTENANCE, TROUBLESHOOTING
5-6
5.3.7 Key test
The key test checks the key operation on the control unit. Open the diagnostic test op-
tions window, select [Keyboard Test] then push the Course control knob.
Press each key and the Course control knob. The related on-screen location fills in
blue if the key or knob is normal. Rotate the Course control knob. The figure inside
the circle on the screen counts up or down with knob rotation.
To finish the test, press the key three times.
5.3.8 Screen test
The screen test checks the LCD for proper display of colors. Open the diagnostic test
options window, select [Screen Test] then push the Course control knob. Push the
Course control knob to change the screen.
To finish the test, press the key.
Keyboard Test
Push MENU key three times
to return
0
Screen Test
Change Test Pattern?
Yes: Push ENTER knob.
Push MENU key to return.
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