DS8000 Service Documentation Version 7.5

Exchange the PCIe cable, Models 951, 95E

Before you begin

Icon for electrostatic discharge wrist strapUse approved ESD procedures to prevent damage.

Attention:
  • This is not a stand-alone procedure. Customer disruption and damage to the hardware might occur if microcode and power boundaries are not in the proper conditions for this service action.
  • If you were sent here by a serviceable event FRU repair, the microcode and power boundaries have already been set.
  • If you were not sent here by a serviceable event FRU repair, see MAP1230 Replace a FRU without using a serviceable event.
Notes:
  • All the cables and FRUs to be removed must be uniquely identified so they can be reinstalled correctly.
  • If an installed earthquake resistance kit prevents you from accessing this FRU, refer to MAP1600.

Both ends of the PCIe cable use the same connector.

Related tasks:
How to start the service information center

Remove the PCIe cable

Procedure

  1. If you have already located the PCIe cable to be replaced, go to step 4.

    If you have not already located the PCIe cable to be replaced, go to the next step.

  2. To locate this FRU, do one of the following and then return here and continue to replace the FRU:
    • If this FRU has a FRU identify indicator, use the FRU identify indicator, which is listed in MAP1240 Locating FRUs using identify indicators. If not, use the location code.
      Note: There might be cases where the FRU failure or fencing conditions prevent the FRU LED indicator from being lit even if the FRU has power.
    • Use the location code, which is listed in MAP1245 Finding FRUs by using location codes.
    • If there is no FRU identify indicator or location code, you were sent here by an isolation MAP or symbolic FRU procedure. Use the information in that procedure and the figures in this procedure to locate the proper part to exchange.
  3. Most, but not all, FRUs have identify indicators. Use the flashing amber or solid blue FRU identify indicators to ensure that you are working on the correct enclosure or FRU.
    • The "light path" identify LEDs are a hierarchy of LEDs that can identify the rack, enclosure, FRU, and even the FRU connector to which a cable is connected.
    • For more information, refer to MAP1240 Locating FRUs using identify indicators.
  4. Remove the PCIe cable. Each PCIe cable goes between a CEC enclosure and an I/O enclosure.
    Gently pull on the green release handle and then unplug the cable.
    Either end of the cable can be unplugged first.
    • Figure 1 shows the location codes at the CEC enclosure end of the cable.
    • Figure 2 shows the location codes at the I/O enclosure end of the cable.
    • Figure 3 shows the location codes of the CEC and I/O enclosures in Rack-1 and Rack-2.
    • Table 1 and Table 2 show the PCIe cable connections.
    Note: The PCIe cable can be "hot-plugged." The FRU the cable connects to, at both ends, can stay powered on. However, the FRU on one end of the cable has already been quiesced and placed in service mode by the microcode before sending you to this procedure.
    Figure 1. PCIe cable at CEC enclosure
    PCIe cable at CEC enclosure
    Figure 2. PCIe cable at I/O enclosure
    PCIe cable at I/O enclosure
    Figure 3. CEC and I/O enclosure location codes, Rack-1 and Rack-2
    CEC and I/O enclosure location codes, Rack-1 and Rack-2
    Table 1. PCIe cable connections (Rack 1 I/O enclosures), Model 951
    From Rack-1 CEC enclosure To Rack-1 I/O enclosure
    R1-XC1-P1-C9-T1 R1-XI1-P1-C7-T1
    (U1400.1B1.sssssss-P1-C7-T1)
    R1-XC1-P1-C9-T2 R1-XI2-P1-C7-T1
    (U1400.1B2.sssssss-P1-C7-T1)
    R1-XC1-P1-C1-T1 R1-XI3-P1-C7-T1
    (U1400.1B3.sssssss-P1-C7-T1)
    R1-XC1-P1-C2-T1 R1-XI4-P1-C7-T1
    (U1400.1B4.sssssss-P1-C7-T1)
    R1-XC2-P1-C9-T1 R1-XI1-P1-C7-T2
    (U1400.1B1.sssssss-P1-C7-T2)
    R1-XC2-P1-C9-T2 R1-XI2-P1-C7-T2
    (U1400.1B2.sssssss-P1-C7-T2)
    R1-XC2-P1-C1-T1 R1-XI3-P1-C7-T2
    (U1400.1B3.sssssss-P1-C7-T2)
    R1-XC2-P1-C2-T1 R1-XI4-P1-C7-T2
    (U1400.1B4.sssssss-P1-C7-T2)
    Table 2. PCIe cable connections (Rack 2 I/O enclosures), Model 951
    From Rack-1 CEC enclosure To Rack-2 I/O enclosure
    R1-XC1-P1-C9-T3 R2-XI1-P1-C7-T1
    (U1400.2B1.sssssss-P1-C7-T1)
    R1-XC1-P1-C9-T4 R2-XI2-P1-C7-T1
    (U1400.2B2.sssssss-P1-C7-T1)
    R1-XC1-P1-C3-T1 R2-XI3-P1-C7-T1
    (U1400.2B3.sssssss-P1-C7-T1)
    R1-XC1-P1-C5-T1 R2-XI4-P1-C7-T1
    (U1400.2B4.sssssss-P1-C7-T1)
    R1-XC2-P1-C9-T3 R2-XI1-P1-C7-T2
    (U1400.2B1.sssssss-P1-C7-T2)
    R1-XC2-P1-C9-T4 R2-XI2-P1-C7-T2
    (U1400.2B2.sssssss-P1-C7-T2)
    R1-XC2-P1-C3-T1 R2-XI3-P1-C7-T2
    (U1400.2B3.sssssss-P1-C7-T2)
    R1-XC2-P1-C5-T1 R2-XI4-P1-C7-T2
    (U1400.2B4.sssssss-P1-C7-T2)
    Note: For a point-to-point diagram, see the link that matches your configuration:

Install the PCIe cable

Procedure

  1. The new cable must have the proper location code labels applied to each end.
    1. Observe the location code label on each end of the cable that has been removed.
    2. Select the proper location code labels from the label sheet shipped with the new cable.
    3. Apply the labels to the new cable.
      Note: The cable is not directional, it has the same connectors on each end.
  2. Install the PCIe cable.
  3. Exit this service information center parts exchange procedure and return to the procedure that sent you here.