Furuno IF-NMEASC - Manual (Page 20)

5. MAINTENANCE, TROUBLESHOOTING
12
5.4 Self Test
The self tests check the equipment for proper operation.
Self test 1
This test checks the two GPS receivers, output circuit, processor and two sensors for proper op-
eration.
1. Remove the cover and shield cover from the equipment.
2. Press the [Menu/Cancel] button several times to show "- - -.1" on the display. The LED lamps
one by one in order, the Output Interval LED in the Port 3 line, and then the equipment goes
into the test mode.
3. Press the [Enter] button, and the test proceeds as below.
• GPS receivers are checked. The GPS lamp lights if the receivers are normal.
• Communication between this equipment and the SC-30 is checked. The OUTPUT LED
lights if normal.
• The CPU memory access is checked. THe PROCESSING LED lights if normal.
• The rate gyro is checked. The SENSOR1 LED lights if normal.
• The acceleration sensor is checked. The SENSOR2 LED lights if normal.
When the test is finished, the nine LEDs below the display flash, and then the display shows
"End.1".
4. Press the [Enter] button to return to self test 1.
GPS OUTPUT PROCESSING
SENSOR1
SENSOR2
IF-NMEASC status
Port 3
- + Enter
Menu/
Cancel
Self test 1 activated
Heading Pitch
Sentence
Roll
Bps
Output
Interval
Bps Sentence
Output
Interval