Comtech EF Data SMS-758 - Manual (Page 120)

Maintenance SMS-758 Modem Protection Switch
5–8 MN/SMS758 Rev. 3
5.3.2 IF Switch
The IF switch module is located in the upper rear section of the switch.
1. Turn OFF both power supplies.
2. Remove all hex nuts on the rear of the switch.
3. Remove the upper two screws that hold the upper section to the side panels.
4. Loosen the lower two screws on the upper section to allow the section to rotate.
5. Disconnect the cable to J29 on the IF switch module.
6. Carefully remove the module from the inside of the upper rear section.
5.3.3 Switch Driver
The switch driver module is located in slot 3 of the upper front section of the switch.
1. Turn OFF both power supplies.
2. Rotate the card ejector to extract the module.
5.3.4 Address Decoder/Driver
The address decoder/driver module is located in slot 4 of the upper front section of the
switch.
1. Turn OFF both power supplies.
2. Rotate the card ejector to extract the module.
5.3.5 M&C
The M&C module is located in slot 5 of the upper front section of the switch.
1. Turn OFF both power supplies.
2. Disconnect the front panel ribbon connector from the M&C module.
3. Rotate the card ejector to extract the module.
If the battery switch (JP6) is OFF, the switch may require that the setup and
configuration procedures be repeated.
If the battery switch is ON, the configuration of the switch will be maintained and can be
transferred to another switch.