Users Manual Part 2

For a list of available FRUs, see Field Replaceable Units (FRUs) on page 478.
Process:
1 Remove the PSU, see Removing the Power Supply Unit (PSU) on page
365.
2 Install the Power Supply Unit into the cabinet, see Installing the Power Supply Unit (PSU) on
page 365.
3 Update the mapping list with the new unit TrackID, see Updating the Mapping List with the New
PSU TrackID on page 365.
11.3.1
Removing the Power Supply Unit (PSU)
Procedure:
1 Switch OFF the Power Supply Unit.
WARNING:
Make sure that the facility power outlet is off to prevent accidental contact with high
energy and injury to personnel.
2 Remove all cables.
3 Remove two M4x10 Torx 20 screws which secure the PSU front panel to the module cage. Save
screws and washers for reuse. The washers are required in Installing the Power Supply Unit
(PSU) on page 365, step 2
.
4 Pull out the Power Supply Unit from the module cage.
11.3.2
Installing the Power Supply Unit (PSU)
Procedure:
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.
3 Connect the power supply cables and optional backup battery cables (AC in, DC in / battery).
4 Connect remaining cables according to labels attached before PSU removal.
5 Switch ON the Power Supply Unit.
6 Check the LED indicators to verify the PSU is operating correctly. See MTS LiTE, MTS 2 and
MTS 4 Installation, Configuration and Basic Service Manual.
11.3.3
Updating the Mapping List with the New PSU TrackID
Procedure:
1 Log on to the Site Controller.
2 Use the following MMI command to view the mapping list: can check_mapping.
Step example:
SC> can check_mapping
Units are present:
Device Track ID
DPM 1 JTH0500101
6802800U74-AP
Chapter 11: Power Supply Unit
365