3 Maintain the ATCA Subrack
3.6.4.1 Remove JBXPS
To remove a JBXPS:
1. Identify the board to be replaced. Refer to Board/Area/Slot/SBL Mapping
(Section 1.3) for details.
2. Switch the “handle” switch to “open”.
The blue H/S LED will blink (short intervals) and then illuminate steadily
3. Switch the breaker on JBXPS to “OFF”
4. Switch OFF the breaker on Power Distribution Unit (PDU) corresponding to
the faulty JBXPS
The following table gives the breaker on PDU corresponding to each JBXPS
in JSXATCA shelves.
JBXPS1
(left)
JBXPS2 JBXPS3 JBXPS4
(right)
Shelf 3 A3 B3 A3 B3
Shelf 4 A1 B1 A1 B1
5. Remove the JBXPS studs rubber protective caps
6. Unfasten the power cables (POWER then RETURN) from the JBXPS studs
Ensure that the power lugs are not energized before removing the screws. If
the power lugs are energized you should: remove the JBXPS carefully without
touching the lugs, nuts, and lockwashers. Then loose the screws. Be careful
with the used tools in order to prevent a short circuit. Power down the system
and then remove the JBXPS.
Since the JBXPS can be hot, let it cool down before pulling it out with bare
hands.
7. Unfasten the four JBXPS screws.
8. Unplug the faulty JBXPS from its location.
3.6.4.2 Insert JBXPS
To insert a JBXPS:
1. Make sure that “handle” switch of the new JBXPS is “open”
2. Make sure that the breaker of the new JBXPS is “OFF”
3. Plug the replacement JBXPS into its location
The blue H/S LED will illuminate steadily.
4. Fasten the 4 JBXPS screws
5. Fasten the power cables (RETURN then POWER) to the JBXPS studs
6. Install the JBXPS studs rubber protective caps
7. Switch ON the power distribution feeding the JBXPS with the breaker
located on the PDU.
8. Check that the “Rev. Power” LED is OFF. If Rev. Power LED is ON switch
OFF the coresponding breakers and check power polarity on JBXPS
terminals.
58 / 90
3BK 21281 AAAA PCZZA Ed.13
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