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8. MAINTENANCE, TROUBLESHOOTING
8-6
8.6 Diagnostics
This paragraph provides the procedures for testing the equipment for proper operation.
Four tests are provided: Memory I/O test, Keyboard test, Remote controller test, and Test
pattern.
8.6.1 Memory I/O test
The memory I/O test provides for individual testing of the display unit, GPS Receiver
GP-310B/320B, Network Sounder ETR-6/10N, ETR-30N and ARP, displaying program
number and checking for proper operation.
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 MEMORY I/O TEST soft key.
MEMORY
I/O TST
DISPLAY UNIT TEST
GPS SENSOR TEST*
NETWORK SOUNDER TEST**
RETURN
* = Requires GPS Receiver GP-310B/320B.
** = Requires Network Sounder ETR-6/10N, ETR-30N.
MEMORY I/O TEST menu
6. Then, press appropriate soft key to start a diagnostic test.