Furuno 1834C-BB - Manual (Page 204)

8. MAINTENANCE, TROUBLESHOOTING
8-11
8.8.3 Keyboard test
The keyboard test checks the controls on the control unit for proper operation.
1. Press the MENU key to show the menu.
2. Press the E: SYSTEM CONFIGURATION soft key.
3. Press the C: SYSTEM SETUP soft key.
4. Press the B: TEST & CLEAR soft key.
5. Press the B: KEYBOARD & REMOTE TEST soft key.
PROGRAM No. 0359203-03.01
ROM
:OK
ROM :OK
Screen for testing keyboard
6. Operate each control on the keyboard one by one. A key is functioning properly if its
on-screen location “fills” in black when the key is pressed. For the ENTER knob and
Trackball
, rotate them to show their X-Y positions digitally, and push the ENTER knob
to confirm its function. Their ranges are –999 to +999.
7. Press the CLEAR key three times on the control unit to escape from the test.
8. Press the MENU key to close the menu.