Maintenance, Replacing power supply module fuse – Transition Networks 48 VDC-TO-12VDC SPS-48V User Manual
Page 4
MAINTENANCE
Replacing Power Supply Module Fuse
CAUTION: Wear a grounding device and observe electrostatic discharge
precautions when replacing the fuse in the 48-to-12 VDC External Power
Supply. Failure to observe this caution could result in damage to, and
subsequent failure of, the 48-to-12 VDC External Power Supply.
CAUTION: Replace fuse only with same size and rating. Failure to observe this
caution could result in equipment damage.
CAUTION: Ensure that power source is NOT powered when disconnecting
power from, or connecting power to, the 48-to-12 External Power Supply.
Failure to observe this caution could result in damage to, and subsequent
failure of, the 48-to-12 External Power Supply and of any attached device.
1.
Ensure that external power source is powered OFF.
2.
Disconnect +48-VDC terminal from Media Conversion Center terminal
block control marked “+” by turning terminal screw counter-clockwise.
3.
Disconnect -48-VDC terminal from Media Conversion Center terminal
block control marked “-” by turning terminal screw counter-clockwise.
4.
Disconnect ground terminal from Media Conversion Center terminal
block control marked “chassis ground” by turning terminal screw
counter-clockwise.
5.
Remove and retain four (4) screws that secure cover to External Power
Supply.
6.
Carefully lift cover from External Power Supply.
7.
Locate fuse on 48-VDC Power Supply Module.
8.
Carefully remove fuse from fuse holder.
9.
Install same size and rating replacement fuse in fuse holder.
10. Carefully slide cover onto External Power Supply.
11. Replace four (4) retained screws that secure cover to External Power
Supply.
12. Connect +48-VDC terminal to 48-to-12 VDC External Power Supply
terminal block control marked “+”. Turn terminal screw clockwise to
secure.
13. Connect -48-VDC terminal to 48-to-12 VDC External Power Supply
terminal block control marked “-”. Turn terminal screw clockwise to
secure.
14. Connect ground terminal to 48-to-12 VDC External Power Supply
terminal block control marked “chassis ground”. Turn terminal screw
clockwise to secure.
15. Ensure that external power source is powered ON.
Fuse
Fuse Holder