Comtech EF Data CDM-625 - Manual (Page 90)

CDM-625 Advanced Satellite Modem Revision 15
Rear Panel Connectors and Pinouts MN-CDM625
3–20
3.3.3.3 Optional DC Operation – Replace the Fuses
For DC operation,the unit requires two different fuses that are contained within the individual
screw-in receptacles below the terminal block (located on the rear panel, Figure 3-12).
Figure 3-12. Replace the CDM-625 Optional DC Chassis Fuses
To replace the fuses:
WARNING! 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).
CAUTION – FOR CONTINUED OPERATOR SAFETY, ALWAYS REPLACE THE FUSES
WITH THE CORRECT TYPE AND RATING.
• Screw either fuse holder back into its receptacle.