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IBM Power 775 Service Procedure

D-link service procedure
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Power 775 D-Link Service Procedure
PN: 41U8487, EC N44172
Power 775
D-Link Service Procedure
9/30/2011
1 of 27

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  • Page 1 Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 Power 775 D-Link Service Procedure 9/30/2011 1 of 27...

  • Page 2: Table Of Contents

    Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 CONTENTS GENERAL................................4 ........................... 4 ELEASE EVISION ISTORY ........................4 HERE TO FIND THIS DOCUMENT ............................. 4 EQUIRED OCUMENTS ............................4 ELATED OCUMENTS ..............................5 BBREVIATIONS OVERVIEW ................................6 ............................... 6...
  • Page 3 Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 Figure 1 Identify LED Selection ..............................11 Figure 2 System Unit, Model F2C Selection – Activate LED......................12 Figure 3 UEPO Identify LED location ............................12 Figure 4 CEC Drawer ID – Front ..............................13 Figure 5 CEC Drawer ID - Rear..............................

  • Page 4: General

    InfoCenter Website: http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/topic/p7ee2/p7ee2kickoff.htm Click “PDF files for the IBM Power 775 (9125-F2C) removing and replacing parts” Under “CEC Drawer”, click “D-Link Optical cables” to download PDF “p775_d_link_cables.pdf” This is the only valid source for the latest Power775 D-Link Cables Service Procedure.pdf.

  • Page 5: Abbreviations

    Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 Abbreviations Abbreviation Definition Details Central Electronic Complex Also referred to as the node or node drawer. DCCA Distributed Conversion and The power supplies for the CEC and DE are called the CEC DCCA Control Assembly and DE DCCA respectively.

  • Page 6: Overview

    Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 2 2 2 2 OVERVIEW You should be performing this procedure if you have determined a D-Link optical cable or port has poor signal quality or has failed and may need replacement.

  • Page 7: Confirm How You Got To This Power 775 D Link Service Procedure

    Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 Confirm how you got to this Power 775 D Link Service Procedure You should have downloaded this procedure from: InfoCenter Website: http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/topic/p7ee2/p7ee2kickoff.htm This is the only valid source for the latest Power775 D-Link Service Procedure document.

  • Page 8: D-Link Description

    Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 D-Link Description The D-Links that interconnect SuperNodes to each other consist of 24-fiber cables, with an orange PVC jacket. Each cable is 3.8mm in diameter. Each end of the cable has an MTP-brand 24-fiber MPO connector, with an attached push/pull tab that allows actuation of connectors in tightly-packed arrays.

  • Page 9: General Discussion Of Mtp Optical Connector Handling

    Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 2.3.1 General Discussion of MTP Optical Connector Handling The MTP implementation of the MPO (Multi-Fiber Push-on/Pull-off) optical connector is a robust, rugged optical connector with a long record of service worldwide over nearly two decades. However, there are several factors that will greatly improve the effectiveness in using this optical connector.

  • Page 10: Concurrency

    Required SSRs and Roles This service procedure contains steps to be performed by a system administrator and an IBM Systems Services Representative (SSR). The system administrator tasks and SSR tasks are separately called out in the procedure.

  • Page 11: Overview Of Procedure

    Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 2.10 Overview of Procedure This is an overview of the tasks to be performed. Read this overview but do not perform any of the tasks yet. <= C ..............11 SSESS...

  • Page 12: Service Procedure

    Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 3 SERVICE PROCEDURE STOP – Do not proceed unless you have read “Safety_Notices_G229-9054.pdf” which is available from InfoCenter; see Section 1.3. Unless otherwise indicated, each step below is to be performed by the SSR (System Services Representative).
  • Page 13 Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 STEP 6 In the window titled Identify LED, Select Enclosure select System Unit, Model F2C then click the Activate LED button (see Figure 2). This will cause the CEC ID LED to flash, as well as the UEPO Panel of the frame.
  • Page 14 Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 STEP 8 Locate the CEC with the D-Link Cable requiring service. The CEC Drawer Identify LEDs (see Figure 4 and Figure 5) will be flashing. If the LEDs are not flashing, verify the FRU via MTMS (machine type model serial number).
  • Page 15 Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 STEP 10 Find the D-Port location with the location code or HUB and link-id from the customer, referencing Figure 7. Figure 7 D-Link Port numbering and location codes If the D-Link cables are individual, proceed to STEP 11.

  • Page 16: Clean The Individual D-Link Connectors <= Ssr Task

    Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 Clean the Individual D-Link Connectors <= SSR Task CAUTION: Sharp edges, corners, or joints nearby. (L006) CAUTION: This product contains Class 1M lasers. Do not view directly with optical instruments. (C028) STEP 11 Verify the correct identification of the connectors at each end of the cable.

  • Page 17: Clean The D-Link Connectors In The Grouper <= Ssr Task

    Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 Clean the D-Link Connectors in the grouper <= SSR Task CAUTION: Sharp edges, corners, or joints nearby. (L006) CAUTION: This product contains Class 1M lasers. Do not view directly with optical instruments. (C028) STEP 15 Verify the correct identification of the connectors at each end of the cable.
  • Page 18 Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 Figure 13 Grouper removed STEP 17 Do the same for the connectors in the grouper at the other end of the suspect D-Link cable.. STEP 18 Ensure that the problem is not due to dirt, dust, or hair on one of the four connector surfaces in the link. Carefully clean all connectors in the groupers at both ends of the suspect D-Link cable.

  • Page 19: Retest The Link <= Customer Task

    Remove the grouper from the CEC drawer (see Figure 10 to Figure 12). STEP 23 Find two 24-position Straight Wrap Plugs (IBM PN: 74Y0792; WRAP PLUG, 24 POSITION, STRAIGHT, WITH SLEEVE, WITH BACK) available in P7IH Hand Tool Kit.

  • Page 20: Run Wrap Plug Test (Nwlinkdiag) <= Customer Task

    Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 Run Wrap Plug Test (nwlinkdiag) <= Customer Task STEP 25 Run the nwlinkdiag command on each of the two ports to determine if the ports can come up when wrapped back on themselves.

  • Page 21: Replace An Individual D-Link Optical Cable <= Ssr Task

    Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 Replace an Individual D-Link Optical Cable <= SSR Task STEP 26 If the system includes multiple frames, and the cable is confirmed defective after the wrap test, then pull the cable through the system's cable tray raceways to remove it completely from the system.
  • Page 22 Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 STEP 32 Clean the other end of the cable. See Section 2.3.1. STEP 33 Repeat STEP 30 for the D-Link Optical connector at the other end of the cable. Plug the connector into the port by pushing either on the strain relief boot at the rear of the connector, or by pushing on the push/pull tab.

  • Page 23: Replace A D-Link Cable In D-Link Groupers <= Ssr Task

    Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 3.10 Replace a D-Link cable in D-Link groupers <= SSR Task STEP 34 Remove a D-Link connector from the bundle assembly groupers at both ends of the cable. Pry apart the two tabs at the upper left and lower right.

  • Page 24: Retest The Link <= Customer Task

    Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 3.11 Retest the link <= Customer Task STEP 43 From the EMS, run the lsnwlinkinfo link status test to determine that the ports correctly come up to the UP_OPERATIONAL status using the newly-installed optical cable.

  • Page 25: Appendix A: Background Information On Failure Isolation Of D-Links

    Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 4 4 4 4 APPENDIX A: BACKGROUND INFORMATION ON FAILURE ISOLATION OF D-LINKS The information in Section 2.11 is useful for diagnosing a link failure. This document, however, is written with the assumption that you have already diagnosed the failure and have determined that there is a D-Link cable needing replacement.
  • Page 26 (i.e., in the same row of D- Ports). 4. On the D-Port A and D-Port B ports, install 24-position Straight Wrap Plugs (IBM PN: 74Y0792; WRAP PLUG, 24 POSITION, STRAIGHT, WITH SLEEVE, WITH BACK). If only one 24-position Straight Wrap Plug is available, Steps can be executed sequentially on each D-Port.

  • Page 27: End Of Document

    Power 775 D-Link Service Procedure PN: 41U8487, EC N44172 5 END OF DOCUMENT 27 of 27...

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