Furuno CI-68 - Manual (Page 54)

4. MAINTENANCE & TROUBLESHOOTING
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4.4.2 Panel test
The panel test checks the keys and setting knob on the control unit for proper operation.
1. Open the MENU 1 menu and choose PANEL from TEST.
2. Press any function key to start the test. A screen for testing the control unit appears on
the display.
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PRESS [MENU] KEY TO QUIT.
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Panel test
3. Press each key (except [MENU] and [POWER]) one by one. A key’s on-screen location
should show “1” when the key is pressed and “0” when the key is released.
4. Operate the setting knob. The setting knob’s on-screen indication should show
appropriate setting value when the knob is operated.
5. To quit the test, press the [MENU] key to return to the MENU 1 menu.
6. Press the [MENU] key again to close the menu.