Furuno GD-1700C - Manual (Page 225)

7. MAINTENANCE, TROUBLESHOOTING
7-9
7.5.2 Test pattern
The test pattern test checks the display for proper display of colors
(GD-1700C/1710C) or tones (GD-1700).
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 TEST PATTERN soft key to show the test pattern.
RETURN
GREEN
BLACK
BLUE
GREEN
RED
WHITE
PRESS ENTER KNOB TO CHANGE
PATTERN.
RETURN
RETURN
GD-1700C/1710C GD-1700
Test patterns
6. For the GD-1700C/1710C, push the [ENTER] knob consecutively to show
white, red, green, blue and black colors in that sequence.
7. Press the RETURN soft key.
8. Press the [MENU] key to close the menu.