Comtech EF Data SMS-758 - Manual (Page 117)

SMS-758 Modem Protection Switch Maintenance
MN/SMS758 Rev. 3 5–5
5.2.3 M:N Operation
Faults Procedures
MODEM (B)X COMM FAILURE
(COM_FLT_(B)x) Verify that the modem baud rate is set to 9600.
Verify that the modem interface type is RS-485.
Verify that the modem parity is even.
Verify that the modem address is correctly
entered in the switch system configuration.
Verify that the modem control interface cable
between the switch and modems is connected to
the correct connectors.
Verify that the M&C in the switch is set to RS-232.
CONFIG VERIFY ERROR M (or D) (B)X
(MOD_CONFIG_FLT_(B)x)
(DMD_CONFIG_FLT_(B)x) Check the configuration of the indicated modem.
If modem configuration has been changed,
update configuration data in switch memory.
PRIME (or BK-UP) M (or D) X NOT
COMPATIBLE
(MOD_COMPAT_FLT_(B)x)
(DMD_COMPAT_FLT_(B)x) Check the Data Rate/Code Rate of the indicated
modem, and verify that the utility menu data in the
switch corresponds to the modem setting. If not,
update the utility menu.
Check the selected modem. Verify that the
interface type selected in the modem setup menu
is compatible with the backup (or prime) modem.
NO ADDRESS FOR PRIME (or BK-UP) X
(NO_ADX_(B)x) Enter the address for the indicated modem in the
system setup menu of the switch.
NO INTERFACE FOR PRIME (or BK-UP) X
(NO_INTFC_(B)x) Enter the interface type for the indicated modem
in the modem setup menu of the switch.
NO D/L FOR DMD X
(NO_DL_x) Enter the downlink assignment for the indicated
demodulator in the modem setup menu.
NO CONFIG FOR PRIME (or BK-UP) M (or D) X
(NO_MOD_CONFIG_(B)x)
(NO_DMD_CONFIG_(B)x) Load the configuration for the indicated modem in
the configuration menu.
+12V FAILURE, -12V FAILURE, +5V FAILURE
(+12V_FLT, -12V_FLT, +5V_FLT) Check the power supplies and modules for proper
insertion into the motherboard connectors.
The voltage limit comparators are not user
adjustable. Consult the factory if the voltage
failure alarm continues to be displayed.
POWER SUPPLY 1 (or 2) FAULT
(PS_1(2)_FLT) Check the power supplies for proper insertion into
the motherboard connector.
Verify that the power switch on the indicated
power is in the ON position.
Verify that the power cord for the indicated power
supply is plugged into the chassis.
Check the fuse of the indicated power supply. The
power supplies are not user serviceable. Contact
EFData if a power supply failure is suspected.