Comtech EF Data CDM-625A, Installation And Operation Manual

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CDM-625A Advanced Satellite Modem MN-CDM625A
Rear Panel Connectors and Pinouts Revision 4
3–22
3.3.3.3 Optional DC Operation – Replace the Fuses
For DC operation the CDM-625A requires two
different
fuses that are contained within the
individual screw-in receptacles below the terminal block (located on the rear panel, Figure
3-14 ).
Figure 3-14. Replace the CDM-625A Optional DC Chassis Fuses
WARNING! DISCONNECT THE POWER SUPPLY BEFORE PROCEEDING!
To replace the fuses, do these steps:
•
First, unscrew either fuse holder from its receptacle. Then, remove and replace the modem
and/or the BUC fuse(s):
o
Use T3A (3 Amp) 250V fuses for modem operation (left-hand receptacle).
o
Use T6.3A (6.3 Amp) 250V fuses when a Block Upconverter (BUC) is installed (right-hand
receptacle).
CAUTION – FOR CONTINUED OPERATOR SAFETY, ALWAYS REPLACE THE
FUSES WITH THE CORRECT TYPE AND RATING.
•
Screw either fuse holder back into its receptacle.