Furuno NAVNET 1823C - Manual (Page 229)

7. MAINTENANCE, TROUBLESHOOTING
7-11
7.8.3 Keyboard, remote controller test
The keyboard test checks the controls on the display unit and remote controller
for proper operation.
1. Press the [MENU] key to show the menu.
2. Press the SYSTEM CONFIGURATION soft key.
3. Press the SYSTEM SETUP soft key.
4. Press the TEST & CLEAR soft key.
5. Press the KEYBOARD & REMOTE TEST soft key.
For Remote Controller For Display Unit
PUSH "CLEAR" KEY
3 TIMES TO RETURN
K-BOARD
TEST
I/R REMOTE CODE
Screen for testing keyboard, remote controller
6. Operate each control on the keyboard and remote controller 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.
7. Press the [CLEAR] key three times on the display unit or remote controller to
escape from the test.
8. Press the [MENU] key to close the menu.