Gray Scale Test - Furuno FCR-2107 Operator's Manual

19. Parameters Setup
19.2.2

Gray scale test

Set brilliance and contrast to calibrated positions. Use the gray scale test to visually inspect neutral shades of gray.
Note: During any selftest, the system becomes inoperative and this is indicated by sounding the buzzer and flashing
the lamp in the SYSTEM FAILURE key on the keyboard-equipped control unit.
To activate the gray scale test, do the following:
1. Spin the scrollwheel to show Menu/Info/Chart Menu in the guidance area then push the left button.
2. Select Initial Settings from the menu then push the scrollwheel.
3. Put the cursor on the triangle in the menu, select Selftest from the menu then push the scrollwheel.
4. Click the OK button. The system will end normal operation and start the Selftest mode.
5. Select Display then push the left button.
19-6