Furuno IB-681 manual Troubleshooting for the User, Then, General, Calling, Receiving

- Test Result -
CPU1	: ROM-OK	RAM-OK	SYNC-OK
	DPRAM-OK		VITERBI-OK
CPU2	: ROM-OK	RAM-OK	EEPROM-OK
	DPRAM-OK
ANTENNA	: ROM-OK	RAM-OK
DEMOD	: OK
VOICE CODEC: OK
HSD MODEM	: CPU-OK	DEMOD-OK	DECODE-OK

<<Press any key>>

Figure 12 Self test results

4.3 Troubleshooting for the User

The table below provides simple troubleshooting procedures which the user may follow to restore normal operation.

	Table 3 Troubleshooting table
If...	Then...
General
	• check satellite line and LES line.
	• check land line, land line network.
	• traffic on land network may be heavy.
	• gateway or server problem on land line.
	• network protocol cannot pass through line to Inmarsat.
	• ask subscriber to check his equipment.
HSD communications not	• check that, in an address call, character format is compatible
	with HSD terminal and HSD modem.
possible
	• check HSD terminal for proper setting.
	• problem may lie with network to which the HSD modem is
	connected.
	• check communication unit/antenna (antenna tracking problem,
	incorrect OID/DID, cabling on HSD modem).
	• check HSD modem (check that HSD modem is on, check
	cabling to HSD terminal).
Calling
	• check if automatic data rate switching is OFF.
Cannot call manually	(Manual transmission is not possible when the Data Rate switch
	setting and data rate of received call are different.)
Cannot call automatically	• check that subscriber no. is correct.
	• subscriber may be busy. Try again later.
Receiving
	• check if automatic data rate switching is OFF.
Cannot receive	(Manual transmission is not possible when the Data Rate switch
	setting and data rate of received call are different.)
HSD terminal does not reply	• check "receive" settings on HSD modem, HSD terminal.
	• HSD terminal may not support certain connections.

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