Figure 3-12. Replacing Cdm-625A Optional Dc Chassis Fuses; Optional Dc Operation - Replacing Fuses - Comtech EF Data CDM-625A Installation And Operation Manual

Advanced satellite modem (18 kbps – 25 mbps)

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CDM-625A Advanced Satellite Modem

Rear Panel Connectors and Pinouts

Optional DC Operation – Replacing 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

Figure 3-12. Replacing CDM-625A Optional DC Chassis Fuses

To replace the fuses:

DISCONNECT THE POWER SUPPLY BEFORE PROCEEDING!

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).

Screw either fuse holder back into its receptacle.

FOR CONTINUED OPERATOR SAFETY, ALWAYS REPLACE THE FUSES WITH

THE CORRECT TYPE AND RATING.

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