Comtech EF Data CDM-625A - Manual (Page 106)

CDM-625A Advanced Satellite Modem MN-CDM625A
Rear Panel Connectors and Pinouts Revision 3
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.