Mx-32 - How to replace a Faulty Midplane Power Cable

Asset ID:	1-71-1547973.1
Update Date:	2016-01-20
Keywords:

Solution Type Technical Instruction Sure

Solution 1547973.1 : Mx-32 - How to replace a Faulty Midplane Power Cable

Applies to:

SPARC M5-32 - Version All Versions and later
SPARC M6-32 - Version All Versions and later
Oracle SuperCluster M6-32 Hardware - Version All Versions and later
Information in this document applies to any platform.

Goal

CAP PROBLEM OVERVIEW: Mx-32 - How to Replace a Faulty Midplane Power Cable

To report errors or request improvements on this procedure, please go to My Oracle Support, and put a comment on Doc ID: 1547973.1

This Canned Action Plan describes all necessary steps to replace a Faulty Midplane Power Cable, which are described in great detail in the the SPARC M5-32 Server Service Manual, Servicing the Midplane Power Cables.

Replacing a Faulty midplane power cable is an average complex operation, you do need to read, understand and use the SPARC M5-32 Server Service Manual, Servicing the Midplane Power Cables section from the service manual, the illustrations around the actual Faulty Midplane Power Cable replacement are complimentary to this written action plan.

ESD Caution:

Circuit boards and drives contain electronic components that are extremely sensitive to static electricity. Ordinary amounts of static electricity from clothing or the work environment can destroy the components located on these boards. Do not touch the components along their connector edges.
Use a Antistatic Wrist strap. Attach one end of the strap to your wrist and the other end to the chassis, depending on what type of strap you use, with the adhesive end or the metal plug.
Use an Antistatic Mat. Place ESD-sensitive components such as motherboards, memory, and other PCBs on an antistatic mat.

Contamination Caution:

Dust particles of packaging material are number one cause of datacenter contamination. Make sure to remove all packaging material, up to the ESD safe packaging material, while still being outside the datacenter.

Solution

DISPATCH INSTRUCTIONS

WHAT SKILLS DOES THE ENGINEER NEED: Mx-32 Product Training/Experience

TASK COMPLEXITY: 4

TIME ESTIMATE: 300 minutes COLD replacement

FIELD ENGINEER INSTRUCTIONS

WHAT STATE SHOULD THE SYSTEM BE IN TO BE READY TO PERFORM THE RESOLUTION ACTIVITY? :

Physical Domains must be shut down. Server must be powered off.

WHAT ACTION DOES THE ENGINEER NEED TO TAKE:

Caution:

Prepare ESD safe storage space for 36 fans, 12 Scalability Switch Modules, 2 Service Processors, 2 Clock Boards, 2 Fan Cages, 1 Front Filler panel, 1 Scalability card cage and 1 Scalability assembly
Record the slot number for each component, and stack them in order. You must place them back in their original order later

1. Halt the server and turn off all AC power:

Turn the key switch on the Front Panel of the server to the Service position.
Gracefully shutdown the server by running the ILOM command "stop /System" (requires Oracle ILOM Reset and Host Control (r) user role).
Turn off all external breakers for the server.
For maximum safety, disconnect all six power cords from their respective AC outlets.

2. Verify that it is safe to disconnect the power cords:

All six external breakers for the server must be in the Off position.
All six power cords for this server must be unplugged from their respective AC outlets.
No LEDs on the server should be lighted.
You should not hear any fans running in the server.

3. Remove the front filler panel. check M5-32 How to Service the Front Filler Panel Assembly [ID 1539427.1] for details

4. Remove all 16 Fan modules from the Upper Fan Cage and Remove all 16 Fan modules from the Lower Fan Cage, check M5-32 How to replace a Faulty Fan Module [ID 1530231.1] for details

5. Remove both Service Processors from the Scalability Cage, check M5-32 - How to Replace a Faulty Service Processor (SP) [ID 1529334.1] for details

6. Remove both Clock Boards from the Scalability Cage, check M5-32 - How to Replace a Faulty Clock Board [ID 1528995.1] for details

7. Remove all 12 Scalability Switch Boards from the Scalability Cage, check M5-32 - How to Replace a Faulty Scalability Switch Board (SSB) [ID 1529636.1] for details

8. Remove all 4 Fan modules from the Scalability Cage, check M5-32 How to replace a Faulty Fan Module [ID 1530231.1] for details

9. Remove the upper fan cage. check M5-32 - How to Replace a Faulty Upper Fan Cage Assembly [ID 1531620.1] for details

10. Remove the lower fan cage. check M5-32 - How to Replace a Faulty Lower Fan Cage Assembly [ID 1531637.1] for details

11. Remove the Scalability Card Cage, check M5-32 How to Replace a Faulty Scalability Card Cage [ID 1546735.1] for details

12. Remove the Scalability Assembly, check M5-32 How to replace a Faulty Scalability Assembly [ID 1538201.1] for details

Note – Take care not to drop the screws. These are not captive screws.

13. Disconnect the plastic housing that contains the lower ends of the midplane power cable:

undo three T20 Torx screws to remove the plastic housing that contains the lower ends of the two cables
separate the inner and outer halves of the plastic housing to release the cable ends
the halves slide apart, they are not connected by screws

14. Depending on which of the two cables you need to replace, free up some space, to be able to disconnect the top ends of the Midplane Power Cables:

record which cables was seated at which location, you must place them back in their original position
disconnect the 3 left side negative power cables that are blocking access to the fat red/black power cables
disconnect the most left pair of fat red/black power cables that block access to the midplane power cable

15. For each of the two Midplane Powr cables you want to replace:

undo two T20 Torx screws to release the top end of the cable that you intend to replace
carefully detach the top of the cable, and remove the cable from the system
insert the replacement cable into the system, and carefully attach the top of the cable to the appropriate bus bar (red on red, black on blue)
tighten the two T20 Torx screws to 15 in-lb

16. Reconnect the cables you disconnected in step 14:

reconnect the most left pair of fat red/black power cables that blocked access to the midplane power cable
reconnect the 3 left side negative power cables that were blocking access to the fat red/black power cables
for each reconnected cable, tighten the two screws to 15 in-lb

17. Restore the lower ends of the Midplane power cables into the plastic housing:

place the lower ends of both cables into the outer plastic housing
when you view the front of the outer plastic housing, the black negative cable is on the left
when you view the front of the outer plastic housing, the red positive cable is on the right
slide the inner plastic housing over the cable ends to hold them in place
use three T20 Torx screws to attach the plastic housing to the cabinet
tighten the screws to seven in-lbundo three T20 Torx screws to remove the plastic housing that contains the lower ends of the two cables

18. Install the Scalability Assembly, check M5-32 How to replace a Faulty Scalability Assembly [ID 1538201.1] for details

19. Install the Scalability Card Cage, check M5-32 How to Replace a Faulty Scalability Card Cage [ID 1546735.1] for details

20. Install the lower fan cage. check M5-32 - How to Replace a Faulty Lower Fan Cage Assembly [ID 1531637.1] for details

21. Install the upper fan cage. check M5-32 - How to Replace a Faulty Upper Fan Cage Assembly [ID 1531620.1] for details

22. Install all 4 Fan modules from the Scalability Cage, check M5-32 How to replace a Faulty Fan Module [ID 1530231.1] for details

23. Install all 12 Scalability Switch Boards from the Scalability Cage, check M5-32 - How to Replace a Faulty Scalability Switch Board (SSB) [ID 1529636.1] for details

24. Install both Clock Boards from the Scalability Cage, check M5-32 - How to Replace a Faulty Clock Board [ID 1528995.1] for details

25. Install both Service Processors from the Scalability Cage, check M5-32 - How to Replace a Faulty Service Processor (SP) [ID 1529334.1] for details

26. Install all 16 Fan modules from the Upper Fan Cage and Install all 16 Fan modules from the Lower Fan Cage, check M5-32 How to replace a Faulty Fan Module [ID 1530231.1] for details

27. Install the front filler panel. check M5-32 How to Service the Front Filler Panel Assembly [ID 1539427.1] for details

28. Verify all six external breakers are still in the Off position.

29. Warn bystanders that you are preparing to restart the server.

30. Turn on all AC power and start the server:

Connect all six AC cords to their respective AC outlets.
Turn on all external breakers for the server.
Turn the key switch on the Front Panel of the server to the On position.
Start the server by running the ILOM command "start /System" (requires Oracle ILOM Reset and Host Control (r) user role).

31. Prepare the failed Midplane Power Cable outside the datacenter for return to Oracle.

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