Comtech EF Data CDM-840 - Manual (Page 52)

CDM-840 Remote Router Revision 2
Rear Panel Connections MN-CDM840
3–12
3.3.2.2 AC Operation – Replacing Fuses
The CDM-840 uses two 5mm x 20mm Slow-blow fuses – one each for line and neutral
connections. The fuses are contained within a fuse holder that is press-fit into the body of the
power supply module located on the rear panel (Figure 3-7).
Figure 3-7. Replacing CDM-840 AC Fuses
To replace the fuses:
DISCONNECT THE POWER SUPPLY BEFORE PROCEEDING!
• First, unseat the fuse holder from the IEC power module.
o Use the slot to pry the holder outward from the IEC power module.
o Pull the holder straight out, and then swing the holder away from the module.
• Then, remove and replace the fuses as needed.
o Use T2.5A (2.5 Amp) fuses for standard operation.
o Use T4A (4 Amp) fuses when a Block Upconverter (BUC) is installed.
FOR CONTINUED OPERATOR SAFETY, ALWAYS REPLACE THE FUSES WITH THE
CORRECT TYPE AND RATING.
• Finally, re-seat the fuse holder in the IEC power module.