4. MAINTENANCE, TROUBLESHOOTING
4.7Replacement of Fuse
The 3 A fuse on the POWER Board inside the processor unit protects the equipment from overcurrent and reverse polarity of the power supply. If the fuse blows, have a qualified technician check the fuse.
WARNING
Use the proper fuse.
Use of a wrong fuse can result in damage to the equipment or cause fire.
4.8Error Messages
The alarm sounds for equipment error and is accompanied by a flashing exclamation mark (
). Press any key to silence the alarm. The exclamation mark remains on the screen until the cause for error is eliminated. Find the cause for the alarm(s) as follows:
1.Press the [MENU] key to open the menu.
2.Choose MESSAGES and then press the [ENT] key.
MESSAGES
GPS DATA ERROR!
Message display
3.Press the [DISP] key to close the menu. Error messages
Error Message | Meaning | Remedy |
ABORTING! | GPS heading error continues for | Check for obstruction. |
| one minute. For example, satellite |
|
| cannot be acquired because of |
|
| unfavorable environment. |
|
ABORTING CALC! | GPS signal lost for one minute. | Press any key to try to restore |
|
| normal operation. |
BACKUP ERROR!(DISP) | Corrupted backup data found in | Default settings are |
| display unit at power on. | automatically restored. |
BACKUP | Corrupted backup data found at | Default settings are |
ERROR!(PRCSSR) | processor unit at power on. | automatically restored. |