Sun StorageTek SL8500 Modular Library System
 

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Applies to:

Goal

Information on PDU Phase LED's:

The SL8500 PDU Phase LED's which indicate all phases are present have been going out prematurely or found to be inoperative at the time of install.

Solution

Steps to Follow
The SL8500 PDU Phase LED's which indicate all phases are present have been going out prematurely or found to be inoperative at the time of install.

SL8500 PDU Phase LED's

EC_142001 is being released to make changes to the associated circuits as noted below:

Note: All levels of PDU's are impacted and the PDU assembly part number is not scheduled to change but the internal PDU cards will be updated.

Card PWA P/N (Old) PWA P/N (New)

HBUD 313824404 313824505

HBUS 313966303 313966404

HBUY 313965303 313965404

Old PWB P/N: 313824103 New PWB P/N: 313824104

Old LED P/N: 15569031 New LED P/N: 260069274

EC: 142001

Engineering does not recommend the PDU assembly be replaced in the advent of an LED failure.

Use the procedure below to determine if the input phases are correct:

-Inspect all the AC to DC power supplies. All power supplies have a "Green LED" indicating AC voltage is present.

Each phase handles 1/3 of the load, if a phase is missing approximately 1/3 of the supplies will indicate no AC present.

Power Supplies:

Power supplies 1 through 24 (drive and rail)
Power supplies 25 and 26 (front)
Electronic control module (one through four)
Op panel
Customer racks (four)
Ethernet switch (or APC AC switch)

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