Nera Inmarsat-c, Service Manual

Page: 11 / 228

Check List
4
5. Communication test
Before the test, check followings.
1) C/N of the status display is OK.
2) Its value is stable.
3) “Current Status” is “Idle”.
5.1 Log in
When Log in ([F7]-1) is succeeded, “Successful Login” appears.
If the trouble message appears, see the list below.
Table 5. TROUBLE message
TROUBLE message Description Remedy
ANT Power voltage
abnormality The supplied voltage error
for the antenna unit - Change IC-115 or PWR board.
- Check the antenna cable.
1. Too many retries.
2. MES Signalling Failure,
Login Request not sent to
NCS.
3. Login failed.
4. Carrier power level
1-3. Login failed
4. The transmit level is not
within the rating.
( actuality, no appears)
- Change IC-115 or RF CON/CPU.
- Check the antenna cable.
5.2 PV test
PV test is started by [F7]-7-1. OK When “Overall Result” is “Pass”. See page 5-1.
The PV test result ([F7]-7-2) should be printed out.