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3.3.3.1.2
Optional -48V DC Operation – Replace the Fuse
WARNING! DISCONNECT THE POWER SUPPLY BEFORE PROCEEDING!
CAUTION – FOR CONTINUED OPERATOR SAFETY, ALWAYS REPLACE THE
FUSES WITH THE CORRECT TYPE AND RATING.
The optional -48V DC MBT-5000A uses a single 20 mm slow-blow fuse. A latched fuse holder is
located on the rear panel, on the DC power supply (terminal block) module (Figure 3-11).
To replace the DC fuse, do these steps:
•
First, press on the fuse holder cover, where shown in Figure 3-11, to unlatch the cover. Pull
out the fuse carrier from its receptacle, and then swing out as shown.
•
Then, remove and replace the fuse (the fuse carrier features a cradle that stores a spare
fuse):
Use 3.15 Amp 5 x 20 mm slow-blow fuses for standard operation
o
•
Finally, swing back, and then push the fuse carrier back into its receptacle. Continue to push
in until the cover latch clicks back into its locked position.
Rear Panel Connections
Figure 3-11. MBT-5000A DC Fuse Replacement
3–18
MBT-5000A L-Band Up/Down Converter System
Revision 1
MN-MBT-5000A
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