Comtech EF Data SDR-54A - Manual (Page 37)

SDR-54A Satellite Demodulator Revision 4
DEMUX Option MN/SDR54A.IOM
5.2.2 Installation
Install the DEMUX 2/4 card as follows:
1. Remove the six 6-32 pan head screws (three on each side) which secure the cover
to the chassis.
Note: The cover and chassis are held together by flange tabs located on the top
and bottom surfaces.
2. Remove the cover from the chassis as follows:
a. Two extraction slots near the front of the unit are located on the top surface.
b. Separate the chassis and cover by placing a screw driver into the extraction
slots and twisting.
Note: To remove the chassis from the cover, gently pry the chassis and cover
away from each other.
c. A ribbon connection between the front panel and the main PCB will allow
for the removal of the chassis without disconnecting the front panel.
CAUTION
Use Electrostatic Discharge (ESD) precautionary procedures when
touching, removing, or inserting PCBs.
3. Locate the DEMUX mounting location at the right rear of the demodulator PCB
as shown in Figure 5-2.
4. Carefully remove the DEMUX PCB from the anti-static bag and plug it into
position on the PCB as shown in Figure 5-2.
CAUTION
Be careful to not bend or break any of the DEMUX mounting pins
when installing the PCB.
5-3