Furuno GS-100 Operator's Manual page 64

7. MAINTENANCE, TROUBLESHOOTING
LCD test
The LCD test checks for proper display of colors.
1. Press the MENU ESC key to open the main menu.
2. Select [4 Maintenance] then [2 Self Test].
3. Select [3 Test Pattern]. The operation instructions display opens.
4. Press the ENT key. Each press of this key changes the LCD pattern in the se-
quence shown below.
Black
Blue
Note: You can cancel the test at any time by pressing the MENU ESC key.
5. Press the MENU ESC key to close the test pattern window.
Automatic test
The memory, keyboard and LCD tests are automatically tested.
1. Press the MENU ESC key to open the main menu.
2. Select [4 Maintenance] then [2 Self Test].
7-6
White
Checker board
Red
RGB gradation Operation instructions
Green
display