Nera Inmarsat-c, Service Manual

Page: 79 / 228

5.2 Self test
5-5
5.2 Self test
The self test is started from the function menu or when the system is turned on. When
detecting the system trouble, the message followed by “TROUBLE:” appears.
5.2.1 Self test when the system is turned on
The test listed in table 5.2.1 is automatically started. When detecting “NG”, change the
tested board.
Table 5.2.1 Test when the system is turned on
Parts to be tested Test content Display when detecting error
U22 SRAM Read/Write check TROUBLE: RFCON CPU RAM NG.
RF CON/CPU
board
U14
Read/Write check of CPU built-in
ROM
TROUBLE: RFCON CPU ROM NG.
5.2.2 Self test from function menu
1. Press [F7/Option], [7] and then [3] to show the self test start display.
Fig.5.2.1 Self Test start Yes/No display
2. Select “Yes” and then press [Enter]. When the test is started, “Now testing” appears.
3. Fig.5.2.2 shows the display when the test is finished.
Fig.5.2.2 Test result display
Note: When the optional GPS board is not installed in terminal unit(IC-215),
“**” appears on the result of the GPS test.
4. Press [Esc] to return the status monitor display.