Comtech EF Data CDM-625A - Figure 3-14. Replace the CDM-625 A Optional DC Chassis Fuses; Optional DC Operation

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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.

Comtech EF Data CDM-625A - Figure 3-14. Replace the CDM-625 A Optional DC Chassis Fuses; Optional DC Operation - Replace the Fuses