Furuno GP-3700F, Operator'S Manual

Page: 198 / 224

13. MAINTENANCE, TROUBLESHOOTING
13-8
13.8.2 Keyboard test
The keyboard test checks the controls on the display unit for proper operation.
1. Press the MENU key to open the main menu.
2. Select [0. SYSTEM SETTING].
3. Select [6. TEST & MEMORY CLEAR].
4. Select [2. KEYBOARD TEST] to show the keyboard test screen.
5. Operate each control on the display unit one by one.
• A key is functioning correctly if its on screen location “fills” in light-blue when the
key is pressed. Each press switches light-blue and white alternately.
• The ENTER knob is functioning correctly if its on screen location “fills” in light-
blue when the knob is pushed. Each push switches light-blue and white alter-
nately. Rotate the
ENTER knob clockwise to increase the value on [Rotary En-
coder], counterclockwise to decrease the value.
• Rotate the trackball to the right or down to increase the value on [Track Ball], to
the left or up to decrease the value.
6. Press the CANCEL key three times to quit the test.
7. Press the DISP key to close the menu.
13.8.3 Test pattern
The test pattern checks the display colors.
1. Press the MENU key to open the main menu.
2. Select [0. SYSTEM SETTING].
3. Select [6. TEST & MEMORY CLEAR].
Rotary Encoder
Track Ball
X
Y
0
KEYBOARD TEST
PRESS [CANCEL] THREE TIMES TO FINISH TEST