Furuno GP-33 - Manual (Page 68)

8. MAINTENANCE, TROUBLESHOOTING
8-4
5. Press each key one by one.
The corresponded mark on the display turns red if the key is functioning properly.
6. Press the MENU/ZOOM key three times to close the test screen.
7. Select [LCD Test], and press the ENT key.
Each press of this key changes the LCD pattern in the sequence shown below.
Red
→Green→Blue→Red (gradation)→Green (gradation)→Blue (grada-
tion) →White→Black→White/Black (gradation)→return to System screen.
Note: To cancel the test, press the MENU/ZOOM key.
8. Press the MENU/ZOOM key twice to close the menu.
8.5 Clearing Data
You can clear GPS data, menu settings* and all backup data* to start afresh (*other
than Language, Units and TD).
1. Press the MENU/ZOOM key twice to show the menu.
2. Select [System], and press the ENT key.
3. Select [Reset], and press the ENT key.
4. Select [GPS], [Menu Settings] or [Factory Reset], and press the ENT key.
5. Select [On], and press the ENT key.
6. Press W to select [Yes], and press the ENT key.
[Menu Settings], [Factory Reset]: Go to Initial Setting screen. Select the language,
then press ENT and MENU/ZOOM key in order.
No. Test Items Description
1 ROM, RAM test Correct: “OK”, Wrong: “NG”
2 Data3 test “-” (This test is used at factory only.)
3 GPS test Correct: “OK”, Wrong: “NG”
4 Program version No. The program version No. which is currently used ap-
pears.
5 CNT Number of test repetition.