Comtech EF Data CDM-750 - Manual (Page 62)

CDM-750 Advanced High-Speed Trunking Modem Revision 2
Rear Panel Connections MN-CDM750
3–16
3.3.2.2 AC Operation – Replacing Fuses
For AC operation the CDM‐750 uses two common 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 IEC power module (located on the rear panel, Figure 3‐9).
Figure 3-9. Replacing CDM-750 AC Fuses
To replace the fuse(s), follow these steps (Figure 3‐9):
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 T4A (4 Amp) fuses as needed.
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.