Motorola DIMETRA MTS 2, Installation, Configuration And Basic Service Manual

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Power Supply Unit (PSU) - FRU Replacement Process Chapter 11: Power Supply Unit
Power Supply Unit (PSU) - FRU Replacement Process
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See the PSU power up sequence in "Expansion Cabinet Power-Up" in Chapter 4, "Hardware Installation" .
For a list of available FRUs, see Appendix A, "Field Replaceable Units (FRUs)" .
Process 11-1 Replacing the Power Supply Unit (PSU)
1
Remove the PSU, see Procedure 11-1 .
2
Install the Power Supply Unit into the cabinet, see Procedure 11-2 .
3
Update the mapping list with the new unit TrackID, see Procedure 11-3 .
Make sure the facility power outlet is off to prevent accidental contact
with high energy and injury to personnel.
PSU Removal
Procedure 11-1 How to Remove Power Supply Unit
1
Switch OFF the Power Supply Unit.
2
Remove all cables.
3
Remove two M4x10 Torx 20 screw sand the lock washers which secure the PSU front
panel to the modules cage. Save screws and washers for reuse. The washers are required
in
Procedure 11-2 , step 2 .
4
Pull out the Power Supply Unit from the module cage.
PSU Installation
Procedure 11-2 How to Reinstall Power Supply Unit
1
Place the Power Supply Unit on the slide rails in the module cage and push it to the back.
2
Secure the Power Supply Unit to the module cage with the two M4x10 Torx 20 screws and
the lock washers.
3
Connect the power supply cables and optional backup battery cables (AC in, DC in / battery).
11-10
6802800U74-N September 2009