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IBM Power775 Service Procedure

IBM Power775 Service Procedure

Uepo cable service procedure
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Power775 UEPO Cable Service Procedure
PN: 41U8503, EC N44172
Power775
UEPO Cable Service Procedure
Last Modified 9/29/2011
1 of 32

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  • Page 1 Power775 UEPO Cable Service Procedure PN: 41U8503, EC N44172 Power775 UEPO Cable Service Procedure Last Modified 9/29/2011 1 of 32...

  • Page 2: Table Of Contents

    YSTEM DMINISTRATOR UEPO C <= SSR T ..................13 DENTIFY AND EPLACE ABLE END OF POWER775 UEPO CABLE SERVICE PROCEDURE .................27 APPENDIX A: POWER775 BPC FSP COMMAND LINE PROCEDURE............28 BPC FSP C ..................28 ROCEDURE TO CCESS THE OMMAND A: P 775 BPC FSP C ............32...
  • Page 3 Power775 UEPO Cable Service Procedure PN: 41U8503, EC N44172 Figure List Figure 1 Hazardous Voltage, Current, or Energy...........................6 Figure 2 UEPO Panel Location................................8 Figure 3 UEPO Panel in OFF (down) position ............................9 Figure 4 UEPO Circuit Block Diagram ..............................10 Figure 5 UEPO Normal Operation (One of 4 Loop Paths Highlighted) ....................11 Figure 6 UEPO Panel With BPA-A BPCH Bypass Switch in Bypass....................11...

  • Page 4: General

    Required Documents Document Location Safety Notices Document #G229-9054 InfoCenter * http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/topic/p7hdx/G229-9054.pdf Table 2 Required Documents *InfoCenter Website: http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/topic/p7ee2/p7ee2kickoff.htm Related Documents Document Location Power775 BPC FSP Command Line Procedure Appendix A Table 3 Related Documents *InfoCenter Website: http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/topic/p7ee2/p7ee2kickoff.htm 4 of 32...

  • Page 5: Acronyms / Abbreviations

    Power775 UEPO Cable Service Procedure PN: 41U8503, EC N44172 Acronyms / Abbreviations Acronym/Abbreviation Definition Details Bulk Power Assembly BPE populated with BPCH, BPD, BPRs, & BPFs BPCH Bulk Power Controller Hub Referred to as BPC on the HMC Bulk Power Distributor...

  • Page 6: Overview

    Servicing of this product or unit is to be performed by trained service personnel only. (C032) 2.1.2 IMPORTANT Here is a danger that specifically pertains to this Power775 service procedure. DANGER: Hazardous voltage present. Voltages present constitute a shock hazard, which can cause severe injury or death.

  • Page 7: Attention - File System Risk Statement

    Power775 UEPO Cable Service Procedure PN: 41U8503, EC N44172 Attention – File System Risk Statement The Global Parallel File System (GPFS) implementation of software RAID stripes data across all the Disk Enclosures in the cluster. If a single Disk Enclosure is powered off while GPFS is active, the file system will go into panic and become unavailable.

  • Page 8: Uepo Cable Description

    Power775 UEPO Cable Service Procedure PN: 41U8503, EC N44172 UEPO Cable Description Referring to the drawing in Figure 2 UEPO Panel Location below, the UEPO cables are connected to the UEPO panel at location U-D1 (where U is the MTMS 9125 F2C Serial #) on the front of the rack. Specifically, the BPA-A UEPO cable plug labeled EPOS-T1 connects to UEPO panel jack U-D1-T1 and the opposite cable end labeled A33B-BPCHA-T4 connects to U-P2-C1-T4.
  • Page 9 Power775 UEPO Cable Service Procedure PN: 41U8503, EC N44172 Figure 3 is a drawing of the UEPO Panel on the front of the rack. Note the UEPO cables (2X) plug into the top as also illustrated in Figure 15 further in this document.

  • Page 10: Background

    Power775 UEPO Cable Service Procedure PN: 41U8503, EC N44172 Background 2.4.1 UEPO Circuit Operation Figure 4 UEPO Circuit Block Diagram Both of the UEPO bypass switches located on each BPCH will need to be placed in bypass during the UEPO Cable service procedure defined here.
  • Page 11 Power775 UEPO Cable Service Procedure PN: 41U8503, EC N44172 BPA-A BPA-B BPE Backplane BPCH BPCH BPE Backplane Logic Figure 5 UEPO Normal Operation (One of 4 Loop Paths Highlighted) Figure 6 UEPO Panel With BPA-A BPCH Bypass Switch in Bypass below highlights the UEPO loop path when the “2 Pole Bypass Switch”...

  • Page 12: Concurrency

    Power775 UEPO Cable Service Procedure PN: 41U8503, EC N44172 Concurrency The UEPO cables are concurrently maintainable. The UEPO bypass switches located on the BPCHs need to be placed in bypass as described in the following procedure. UEPO Cable Weight The UEPO Cable weighs approximately 498.95 grams / 1.1 lbs Required SSRs and Roles This service procedure requires one SSR.

  • Page 13: Identify And Replace Uepo Cable <= Ssr Task

    If the rack could not be located in Step 5 above, then light the UEPO Service Identify LED by accessing the HMC BPC-A ASM SIDE_A Service Processor Command Line (Refer to ‘Power775 BPC FSP Command Line Procedure’ in Appendix A of this PDF and select SIDE_A on the Launch ASM Interface window) and enter the...
  • Page 14 Make sure the UEPO Cable status is redundant by sending a UEPO Panel/Cable redundancy command to the BPCH FSP. To do this access the HMC BPC-A ASM SIDE_A Service Processor Command Line (Refer to ‘Power775 BPC FSP Command Line Procedure’ in Appendix A of this PDF and ensure ASM SIDE_A is active per Step 12)
  • Page 15 Power775 UEPO Cable Service Procedure PN: 41U8503, EC N44172 Figure 8 Front Door Open DANGER: Hazardous voltage present. Voltages present constitute a shock hazard, which can cause severe injury or death. (L004) Figure 9 Hazardous Voltage, Current, or Energy 15 of 32...
  • Page 16 Power775 UEPO Cable Service Procedure PN: 41U8503, EC N44172 Locate both BPCHs (see Figure 10 below) and the UEPO Cable plugged into position T4 on each BPCH. Figure 10 Location of BPCHs in rack 16 of 32...
  • Page 17 Check Bypass Switch State is correct by sending the UEPO Bypass Status Read command to the BPCH FSP. To do this access the HMC BPC-A ASM SIDE_A Service Processor Command Line (Refer to ‘Power775 BPC FSP Command Line Procedure’ in Appendix A of this PDF and ensure ASM SIDE_A is active per Step 12) and enter...
  • Page 18 Issue a UEPO Panel deactivate command to the BPCH FSP. To do this access the HMC BPC-A ASM SIDE_A Service Processor Command Line (Refer to ‘Power775 BPC FSP Command Line Procedure’ in Appendix A of this PDF and ensure ASM SIDE_A is active per Step 12) and enter the following at the command prompt...
  • Page 19 Power775 UEPO Cable Service Procedure PN: 41U8503, EC N44172 If something different is returned, then the returned “rrssdd” format hexadecimal characters can be translated as follows: “rr” Return Code Definitions: 00 = Command executed properly 21 = Cage Not Present / Configured 22 = FRU Not Present / Configured.
  • Page 20 Power775 UEPO Cable Service Procedure PN: 41U8503, EC N44172 Disconnect either the suspect EPOS-T1 or EPOS-T2 UEPO cable from the UEPO Panel assembly T1 or T2 position by loosening the connector thumb screws and unplugging only one cable (reference Figure 12 below)
  • Page 21 Power775 UEPO Cable Service Procedure PN: 41U8503, EC N44172 Trace out the cable and disconnect the other end of the UEPO Cable from either BPCH-A T4 location U-P2-C1-T4 or BPCH-B T4 location U-P1-C1-T4 (where U is the MTMS 9125 F2C Serial #) by loosening the connector thumb...
  • Page 22 Power775 UEPO Cable Service Procedure PN: 41U8503, EC N44172 Connect the replacement UEPO Cable to either the BPCH-A T4 location U-P2-C1-T4 or BPCH-B T4 location U- P1-C1-T4 (where U is the MTMS 9125 F2C Serial #) by plugging the T4 cable connector and tightening the...
  • Page 23 Power775 UEPO Cable Service Procedure PN: 41U8503, EC N44172 Connect the other end of the UEPO Cable labeled either EPOS-T1 or EPOS-T2 to the UEPO Panel assembly by plugging into the connector positions labeled T1 or T2 and tightening the connector thumb screws as shown in...
  • Page 24 Check Bypass Switch State is correct by sending the UEPO Bypass Status Read command to the BPCH FSP. To do this access the HMC BPC-A ASM SIDE_A Service Processor Command Line (Refer to ‘Power775 BPC FSP Command Line Procedure’ in Appendix A of this PDF and ensure ASM SIDE_A is active per Step 12) and enter...
  • Page 25 Issue a UEPO Panel activate command to the BPCH-A FSP. To do this access the HMC BPC-A ASM SIDE_A Service Processor Command Line (Refer to ‘Power775 BPC FSP Command Line Procedure’ in Appendix A of this PDF and ensure ASM SIDE_A is active per Step 12) and enter the following at the command prompt...
  • Page 26 If the UEPO Service Identify LED is still on, then turn it off by accessing the HMC BPC-A ASM SIDE_A Service Processor Command Line (Refer to ‘Power775 BPC FSP Command Line Procedure’ in Appendix A of this PDF and ensure ASM SIDE_A is active per Step 12) and enter the following at the command prompt (IMPORTANT:...

  • Page 27: End Of Power775 Uepo Cable Service Procedure

    Issue an BPCH-A real-time Power/Thermal SRC read-out command to the HMC BPC-A ASM SIDE_A Service Processor Command Line (Refer to ‘Power775 BPC FSP Command Line Procedure’ in Appendix A of this PDF and ensure ASM SIDE_A is active per Step 12) by entering the following at the command prompt (IMPORTANT:...

  • Page 28: Appendix A: Power775 Bpc Fsp Command Line Procedure

    Power775 UEPO Cable Service Procedure PN: 41U8503, EC N44172 5 APPENDIX A: POWER775 BPC FSP COMMAND LINE PROCEDURE Procedure to Access the BPC FSP Command Line 1. The HMC can be accessed via the keyboard/display that resides in the network management rack.
  • Page 29 Power775 UEPO Cable Service Procedure PN: 41U8503, EC N44172 4. From the Tasks Menu right-arrow pull-down menu, click Operations  Launch Frame Advanced Systems Management (ASM) as shown in Figure 18 Figure 18 Launch Frame Advanced System Management (ASM) 29 of 32...
  • Page 30 Power775 UEPO Cable Service Procedure PN: 41U8503, EC N44172 5. From the Launch ASM Interface window, select SIDE_A or SIDE_B (whichever the instructions call for) from the ‘Frame IP Address:’ pull-down arrow menu, then click the OK button (see Figure 19 which shows the SIDE_A BPC...
  • Page 31 PN: 41U8503, EC N44172 6. The ASM login window is presented. Acquire the necessary User ID and Password. “celogin” requires Daily Password from the IBM Support Center. “celogin1” might be enabled by the customer. If so, obtain the password from the customer.

  • Page 32: End Of Appendix A: Power775 Bpc Fsp Command Line Procedure

    –m GET_SIDE to query which BPC FSP is actively connected. 13. Return to the step of the paper service procedure that directed you to this Appendix A. End of Appendix A: Power775 BPC FSP Command Line Procedure 6 END OF DOCUMENT...

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