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IBM Power System 8335-GTW Manual

Servicing
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Servicing the 8335-GTW
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Summary of Contents for IBM Power System 8335-GTW

  • Page 1 Power Systems Servicing the 8335-GTW...
  • Page 2 Note Before using this information and the product it supports, read the information in “Safety notices” on page v, “Notices” on page 221, the IBM Systems Safety Notices manual, G229-9054, and the IBM Environmental Notices and User Guide, Z125–5823. ®...

  • Page 3: Table Of Contents

    Contents Safety notices......................v Removing and replacing parts in the 8335-GTW or 8335-GTX......... 1 BMC card..............................3 Removing the BMC card......................... 3 Replacing the BMC card......................... 4 Cold plates..............................7 Removing the cold plates from the system................... 7 Replacing the cold plates in the cold plate installation carrier............32 Replacing the cold plates in the system....................
  • Page 4 Placing the system into the operating position.................211 Removing and replacing power cords.....................214 Disconnecting power cords....................... 214 Connecting power cords........................217 Notices......................221 Accessibility features for IBM Power Systems servers................222 Privacy policy considerations ......................... 223 Trademarks..............................223 Electronic emission notices........................224 Class A Notices...........................224 Class B Notices...........................227...

  • Page 5: Safety Notices

    Das Produkt ist nicht für den Einsatz an Bildschirmarbeitsplätzen im Sinne § 2 der Bildschirmarbeitsverordnung geeignet. Laser safety information IBM servers can use I/O cards or features that are fiber-optic based and that utilize lasers or LEDs. Laser compliance IBM servers may be installed inside or outside of an IT equipment rack.
  • Page 6 – For racks with a DC power distribution panel (PDP), connect the customer’s DC power source to the PDP. Ensure that the proper polarity is used when attaching the DC power and DC power return wiring. • Connect any equipment that will be attached to this product to properly wired outlets. •...
  • Page 7 • Rack-mounted devices are not to be used as shelves or work spaces. Do not place objects on top of rack-mounted devices. In addition, do not lean on rack mounted devices and do not use them to stabilize your body position (for example, when working from a ladder). •...
  • Page 8 CAUTION: Removing components from the upper positions in the rack cabinet improves rack stability during relocation. Follow these general guidelines whenever you relocate a populated rack cabinet within a room or building. • Reduce the weight of the rack cabinet by removing equipment starting at the top of the rack cabinet.
  • Page 9 DANGER: Rack-mounted devices are not to be used as shelves or work spaces. Do not place objects on top of rack-mounted devices. In addition, do not lean on rack-mounted devices and do not use them to stabilize your body position (for example, when working from a ladder). Stability hazard: •...
  • Page 10 DANGER: Multiple power cords. The product might be equipped with multiple AC power cords or multiple DC power cables. To remove all hazardous voltages, disconnect all power cords and power cables. (L003) (L007) CAUTION: A hot surface nearby. (L007) x Power Systems: Servicing the 8335-GTW...
  • Page 11 Exchange only with the IBM-approved part. Recycle or discard the battery as instructed by local regulations. In the United States, IBM has a process for the collection of this battery. For information, call 1-800-426-4333. Have the IBM part number for the battery unit available when you call.
  • Page 12 • LIFT TOOL intended for use to assist, lift, install, remove units (load) up into rack elevations. It is not to be used loaded transporting over major ramps nor as a replacement for such designated tools like pallet jacks, walkies, fork trucks and such related relocation practices. When this is not practicable, specially trained persons or services must be used (for instance, riggers or movers).
  • Page 13 Freewheeling will cause uneven cable wrapping around winch drum, damage cable, and may cause serious injury. • This TOOL must be maintained correctly for IBM Service personnel to use it. IBM shall inspect condition and verify maintenance history before operation. Personnel reserve the right not to use TOOL if inadequate.
  • Page 14 xiv Power Systems: Servicing the 8335-GTW...

  • Page 15: Removing And Replacing Parts In The 8335-Gtw Or 8335-Gtx

    Electrical voltage and current from power, telephone, and communication cables are hazardous. To avoid a shock hazard: • If IBM supplied the power cord(s), connect power to this unit only with the IBM provided power cord. Do not use the IBM provided power cord for any other product.
  • Page 16 • Do not continue with the inspection if any unsafe conditions are present. • Before you open the device covers, unless instructed otherwise in the installation and configuration procedures: Disconnect the attached AC power cords, turn off the applicable circuit breakers located in the rack power distribution panel (PDP), and disconnect any telecommunications systems, networks, and modems.

  • Page 17: Bmc Card

    Removing and replacing the BMC card in the 8335-GTC, 8335-GTG, 8335- GTH, 8335-GTW, or 8335-GTX ® Learn how to remove and replace the baseboard management card (BMC) in the IBM Power System AC922 (8335-GTC, 8335-GTG, and 8335-GTH) or IBM Power System AC922 (8335-GTW and 8335-GTX) system.

  • Page 18: Replacing The Bmc Card

    Figure 1. Removing the BMC card 4. Place the BMC card on an ESD mat. Replacing the BMC card in the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system To replace a the baseboard management card (BMC), complete the steps in this procedure. Procedure 1.
  • Page 19 Figure 2. Aligning the BMC card in the chassis 4. Using the blue tab at (A) and the handle (B) as shown in Figure 3 on page 6, press the BMC card into the connector on the system backplane. Removing and replacing parts in the 8335-GTW or 8335-GTX 5...
  • Page 20 Figure 3. Replacing the BMC card 5. Rotate the release latch (B) towards the rear of the system and snap the latch into the closed position to fully seat the card. 6. Replace the four screws (C) to secure the BMC card to the rear of the chassis. 7.

  • Page 21: Cold Plates

    Figure 4. Applying the new MAC address label What to do next Prepare the system for operation. For instructions, see “Preparing the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system for operation after you remove and replace internal parts” on page 202. Removing and replacing the cold plates in the 8335-GTW or 8335-GTX Learn how to remove and replace the cold plates in the system.
  • Page 22 GPU, and the cold plate. If the processor TIM is damaged, it must be replaced. GPU TIMs must always be replaced. Ensure that you have spare TIMs available before proceeding. Familiarize yourself with the cold plate installation carrier. You use the carrier to remove and replace the cold plate assembly.
  • Page 23 Figure 5. Removing the air baffles 3. Remove the three screws (A) that secure the water hoses to the rear of the system as shown in Figure 6 on page 10. Removing and replacing parts in the 8335-GTW or 8335-GTX 9...
  • Page 24 Figure 6. Removing the rear water hose screws 4. Remove the two screws that secure the pipes to the left side of the chassis as shown in Figure 7 on page 11. 10 Power Systems: Servicing the 8335-GTW...
  • Page 25 Figure 7. Removing the screws from the side water pipe bracket 5. Remove the two pipe holders (A) near the middle of the system as shown in Figure 8 on page 12. Loosen the four screws (B) and lift the holders off the pipes. Removing and replacing parts in the 8335-GTW or 8335-GTX 11...
  • Page 26 Figure 8. Removing the pipe holders 6. Remove the two pipe holders (A) near the front of the system as shown in Figure 9 on page 13. Loosen the four screws (B) and lift the holders from the pipes. 12 Power Systems: Servicing the 8335-GTW...
  • Page 27 Figure 9. Removing the pipe holders 7. Loosen the screw (A) that secures the pipe junction (B) to the front of the system as shown in Figure 10 on page 14. Removing and replacing parts in the 8335-GTW or 8335-GTX 13...
  • Page 28 Figure 10. Loosen the front pipe screw 8. Pull the side pipes away and slightly forwards from the side of the system as shown in Figure 11 on page 15. 14 Power Systems: Servicing the 8335-GTW...
  • Page 29 Figure 11. Loosening the side pipes 9. Lift the pipes slightly out of the chassis. Rest the pipes against the side as shown in Figure 12 on page Removing and replacing parts in the 8335-GTW or 8335-GTX 15...
  • Page 30 Figure 12. Lifting out the side pipes 10. For each GPU, loosen each of the cold plate retainer screws and swing each of the retainers open. Attention: Do not unscrew the four spring-loaded screws that attach the aluminum heat cover to the GPU.
  • Page 31 Figure 13. Open the cold plate retainer 11. With the cold plate installation carrier placed on a work table, open all the hook-and-loop fasteners on the carrier as shown in Figure 14 on page 18. Removing and replacing parts in the 8335-GTW or 8335-GTX 17...
  • Page 32 Figure 14. Opening the hook-and-loop fasteners in the cold plate installation carrier 12. Remove all the holders from the cold plate installation carrier as shown in Figure 15 on page 19. Unscrew the holders and place them on the work table. 18 Power Systems: Servicing the 8335-GTW...
  • Page 33 Figure 15. Removing all the holders 13. Place the cold plate installation carrier over the system as shown in Figure 16 on page 20. Ensure that the alignment pins in the carrier fit into holes for the top cover. Removing and replacing parts in the 8335-GTW or 8335-GTX 19...
  • Page 34 Figure 16. Lowering the cold plate installation carrier onto the system 14. Fasten the two water hoses to the top of the cold plate installation carrier as shown in Figure 17 on page 21. 20 Power Systems: Servicing the 8335-GTW...
  • Page 35 Figure 17. Securing the hoses 15. At the rear of the system, lift and fasten the rear of the side pipe to the cold plate installation carrier as shown in Figure 18 on page 22. Removing and replacing parts in the 8335-GTW or 8335-GTX 21...
  • Page 36 Figure 18. Securing the rear of the side pipe 16. At the front of the system, lift the side pipe up. Support it on the pins and fasten the front of the side pipe to the cold plate installation carrier as shown in Figure 19 on page 23. 22 Power Systems: Servicing the 8335-GTW...
  • Page 37 Figure 19. Securing the front of the side pipe 17. At the front of the system, lift the front pipe junction (A) up. Fasten the front pipe junction to the cold plate installation carrier as shown in Figure 20 on page 24. Removing and replacing parts in the 8335-GTW or 8335-GTX 23...
  • Page 38 Figure 20. Securing the front pipe 18. Attach the GPU cold plate to the corresponding holder. a) Ensure that the plastic latches are in the open position on the GPU cold plate holder as shown in Figure 21 on page 25. 24 Power Systems: Servicing the 8335-GTW...
  • Page 39 Figure 21. Opening the GPU holder latches b) Insert the cold plate pins (A) into the holder as shown in Figure 22 on page 25. Figure 22. Inserting the GPU cold plate pins into the holder Removing and replacing parts in the 8335-GTW or 8335-GTX 25...
  • Page 40 c) Slide both of the plastic latches (A) into the narrowest part of the pin as shown in Figure 23 on page 26. Figure 23. Securing the GPU cold plate pins d) Repeat step “18” on page 24 for the other GPU cold plate. 19.
  • Page 41 Figure 24. Placing the GPU holder back onto the carrier 20. Apply light pressure downward on the cold plate. Loosen the retainer screw of the system processor module cold plate by turning the supplied hex key counterclockwise. Loosen the screw until it moves freely.
  • Page 42 Figure 25. Loosening the cold plate retainer screw 21. Attach the processor cold plate to the holder by using the following steps: a) On the processor cold plate holder, ensure that the plastic latches (B) are in the open position as shown in Figure 26 on page 29, so that the holes (A) are exposed.
  • Page 43 Figure 26. Opened holder latches b) Lift the coldplate straight up from the processor. Insert the cold plate pins (A) into the holder as shown in Figure 27 on page 30. Removing and replacing parts in the 8335-GTW or 8335-GTX 29...
  • Page 44 Figure 27. Inserting the cold plate pins into the holder c) Slide both of the plastic latches (B) into the narrowest part of the pin as shown in Figure 27 on page 30. d) Fasten the processor cold plate holder to the cold plate installation carrier. Use the alignment pin (A) and tighten the screw (B) to secure the holder to the carrier.
  • Page 45 Figure 28. Placing the processor holder back onto the carrier 22. Repeat steps “20” on page 27 - “21” on page 28 for the other processor. 23. After all the cold plates are attached to the cold plate installation carrier, lift the carrier straight up off the system as shown in Figure 29 on page 32.

  • Page 46: Replacing The Cold Plates In The Cold Plate Installation Carrier

    Figure 29. Lifting the cold plate installation carrier 24. To prevent the cold plates from being dented or damaged, place the cold plate installation carrier on a flat work surface to ensure that the cold plates in the carrier remain suspended above the work surface.
  • Page 47 Figure 30. Removing the processor cold plate holder from the carrier b) Support the cold plate from underneath and carefully slide both of the plastic latches (A) to free the pins from the holder as shown in Figure 31 on page 34. Removing and replacing parts in the 8335-GTW or 8335-GTX 33...
  • Page 48 Figure 31. Removing the processor cold plate pins from the holder c) Gently lower the cold plate to the work surface. The cold plate is resting on the work table. Repeat step “2” on page 32 for each cold plate. 3.
  • Page 49 Figure 32. Removing the GPU cold plate holder from the carrier b) Support the cold plate from underneath and carefully slide both of the plastic latches (A) to free the pins from the holder as shown in Figure 33 on page 36. Removing and replacing parts in the 8335-GTW or 8335-GTX 35...
  • Page 50 Figure 33. Removing the GPU cold plate from the holder c) Gently lower the cold plate to the work surface. The cold plate is resting on the work table. Repeat step “3” on page 34 for each cold plate. 4. Unfasten all the hook-and-loop fasteners on the cold plate installation carrier. Ensure that all the water pipes are released from the holder.
  • Page 51 Figure 34. Moving the cold plate installation carrier over the replacement cold plate assembly 6. Fasten the two water hoses to the top of the cold plate installation carrier as shown in Figure 35 on page 38. Removing and replacing parts in the 8335-GTW or 8335-GTX 37...
  • Page 52 Figure 35. Securing the hoses 7. At the rear of the system, lift and fasten the rear of the side pipe to the cold plate installation carrier as shown in Figure 36 on page 39. 38 Power Systems: Servicing the 8335-GTW...
  • Page 53 Figure 36. Securing the rear of the side pipe 8. At the front of the system, lift the side pipe up. Support it on the pins and fasten the front of the side pipe to the cold plate installation carrier as shown in Figure 37 on page 40. Removing and replacing parts in the 8335-GTW or 8335-GTX 39...
  • Page 54 Figure 37. Securing the front of the side pipe 9. At the front of the system, lift the front pipe junction (A) up. Fasten the front pipe junction to the cold plate installation carrier as shown in Figure 38 on page 41. 40 Power Systems: Servicing the 8335-GTW...
  • Page 55 Figure 38. Securing the front pipe 10. Attach the processor cold plates to the holder. a) Lift the coldplate straight up from the processor. Insert the cold plate pins (A) into the holder as shown in Figure 39 on page 42. Removing and replacing parts in the 8335-GTW or 8335-GTX 41...
  • Page 56 Figure 39. Inserting the cold plate pins into the holder b) Carefully slide both of the plastic latches (A) into the narrowest part of the pin. c) Fasten the processor cold plate holder to the cold plate installation carrier. Use the alignment pin (A) and tighten the screw (B) to secure the holder to the carrier.
  • Page 57 Figure 40. Placing the processor holder back onto the carrier d) Repeat step “10” on page 41 for each cold plate. 11. Attach the GPU cold plates to the holder. a) Insert the cold plate pins (A) into the holder as shown in Figure 41 on page 44. Removing and replacing parts in the 8335-GTW or 8335-GTX 43...
  • Page 58 Figure 41. Inserting the GPU cold plate pins into the holder b) Slide both of the plastic latches (A) into the narrowest part of the pin as shown in Figure 42 on page 44. Figure 42. Securing the GPU cold plate pins c) Repeat step “11”...

  • Page 59: Replacing The Cold Plates In The System

    12. Fasten each GPU cold plate holder to the cold plate installation carrier as shown in Figure 43 on page 45. Use the alignment pins (A) and tighten the screw (B) to secure the holder to the carrier. Figure 43. Placing the GPU holder back onto the carrier What to do next Next, complete the: “Replacing the cold plates in the 8335-GTW or 8335-GTX system”...
  • Page 60 2. Ensure that each GPU clip is open as shown in Figure 44 on page 46. Figure 44. Open the cold plate retainer 3. Check the TIM heat sink material. • For each GPU, the TIM must be replaced. • For each processor, inspect the TIM material for visible signs of damage. If you see folds, tears, bends, or if you have doubts about the TIM, replace it.
  • Page 61 Figure 45. Inspecting the thermal interface material 4. Lower the cold plate installation carrier straight down onto the system as shown in Figure 46 on page If you lower the carrier at an angle, the carrier catches on the cold plate clips. Removing and replacing parts in the 8335-GTW or 8335-GTX 47...
  • Page 62 Figure 46. Lowering the cold plate installation carrier onto the system 5. Replace the processor cold plates first. a) Unscrew a processor cold plate holder from the cold plate installation carrier as shown in Figure 47 on page 49. 48 Power Systems: Servicing the 8335-GTW...
  • Page 63 Figure 47. Removing the processor cold plate holder from the carrier b) Support the cold plate from underneath and carefully slide both of the plastic latches (A) to free the pins from the holder as shown in Figure 48 on page 50. Removing and replacing parts in the 8335-GTW or 8335-GTX 49...
  • Page 64 Figure 48. Removing the processor cold plate pins from the holder c) Check that the processor TIM is squarely placed on the processor. d) Lower the cold plate onto the processor and TIM while carefully aligning the cold plate guide holes with the pins on the processor socket.
  • Page 65 Figure 49. Tightening the cold plate retainer screw Repeat step “5” on page 48 for the other processor. 6. Replace the GPU cold plates next. a) Check that the new GPU TIMs are squarely placed on the GPUs as shown in Figure 50 on page Removing and replacing parts in the 8335-GTW or 8335-GTX 51...
  • Page 66 Figure 50. Installing GPU TIMs b) Unscrew a GPU cold plate holder from the cold plate installation carrier as shown in Figure 51 on page 53. 52 Power Systems: Servicing the 8335-GTW...
  • Page 67 Figure 51. Removing the GPU cold plate holder from the carrier c) Support the cold plate from underneath and carefully slide both of the plastic latches (A) to free the pins from the holder as shown in Figure 52 on page 54. Removing and replacing parts in the 8335-GTW or 8335-GTX 53...
  • Page 68 Figure 52. Removing the GPU cold plate from the holder d) Place the cold plate onto the GPUs. e) Secure the middle GPU first. Swing the retainer over the GPU and tighten the cold plate retainer screw as shown in Figure 53 on page 55. Repeat with the remaining clips until the GPU cold plate is secure.
  • Page 69 Figure 53. Secure the cold plate retainer screw Repeat step “6” on page 51 for the other GPU cold plate. 7. Unfasten all the hook-and-loop fasteners on the cold plate installation carrier as shown in Figure 54 on page 56. Ensure that all the water pipes are released from the holder.
  • Page 70 Figure 54. Unfastening the water hoses from the carrier 8. Lift the cold plate installation carrier straight up off the system as shown in Figure 55 on page 57. 56 Power Systems: Servicing the 8335-GTW...
  • Page 71 Figure 55. Lifting the cold plate installation carrier 9. Replace the front pipe (B). Use the alignment pin (C) to position the front pipe. Tighten the screw (A) that secures the pipe (B) to the front of the system as shown in Figure 56 on page 58. Removing and replacing parts in the 8335-GTW or 8335-GTX 57...
  • Page 72 Figure 56. Replacing the front pipe screw 10. Replace the two pipe holders (A) near the front of the system as shown in Figure 57 on page 59. Place the pipes in the supports on the system backplane, place the holders over the supports and the pipes, align the screw threads at (B), and tighten the four screws.
  • Page 73 Figure 57. Replacing the front pipe holders 11. Replace the side pipes into the side of the chassis as shown in Figure 58 on page 60. Ensure the rear of the pipe slides into its position. Ensure that the alignment pin at the front of the side pipe is in the pipe junction.
  • Page 74 Figure 58. Inserting the side pipes 12. Replace the two pipe holders (A) near the middle of the system as shown in Figure 59 on page 61. Place the pipes in the supports on the system backplane, place the holders over the supports and the pipes, align the screw threads at (B), and tighten the four screws.
  • Page 75 Figure 59. Replacing the middle pipe holders 13. Replace the three screws (A) that secure the water hoses to the rear of the system as shown in Figure 60 on page 62. Removing and replacing parts in the 8335-GTW or 8335-GTX 61...
  • Page 76 Figure 60. Replacing the rear water hose screws 14. Replace the two screws that secure the pipes to the left side of the chassis as shown in Figure 61 on page 63. 62 Power Systems: Servicing the 8335-GTW...
  • Page 77 Figure 61. Replacing the screws for the side water pipe bracket 15. Replace the air baffles (A), (B), and (C) as shown in Figure 62 on page 64. The baffles go straight down; you might need to maneuver them around the hoses. Removing and replacing parts in the 8335-GTW or 8335-GTX 63...

  • Page 78: Disk Drive

    Removing and replacing a disk drive in the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system Learn how to remove and replace a disk drive in the IBM Power System AC922 (8335-GTC, 8335-GTG, and 8335-GTH) or IBM Power System AC922 (8335-GTW and 8335-GTX) system.

  • Page 79: Removing A Disk Drive

    Removing a disk drive from the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335- GTX system To remove a disk drive, complete the steps in this procedure. Procedure 1. Remove the front cover. For instructions, see “Removing the front cover from an 8335-GTC, 8335- GTG, 8335-GTH, 8335-GTW, or 8335-GTX system”...
  • Page 80 You can also use the optional usysident package to turn on or turn off the amber LED. Run the following command to turn on the amber LED: usysident -d sdX -s identify Run the following command to turn off the amber LED: usysident -d sdX -s normal d) To prepare the drive for removal, disable it by running the following command, where sdX is the drive to replace.

  • Page 81: Replacing A Disk Drive

    5. Support the bottom of the disk drive as you slide it out of the system. Do not hold the disk drive by the handle. 6. If you are removing more than one drive, repeat the steps in this procedure until all drives are removed.

  • Page 82: Disk Drive And Fan Card

    After you insert the new disk drive, you must scan for the device. Choose one of the following options depending on the operating system that you are using: • Ubuntu Linux operating system: Ubuntu can automatically detect storage devices. You may not need to rescan the disk drives; proceed to verifying that the new disk drive is active.
  • Page 83 • Attach an electrostatic discharge (ESD) wrist strap to the front ESD jack, to the rear ESD jack, or to an unpainted metal surface of your hardware to prevent the electrostatic discharge from damaging your hardware. • When you use an ESD wrist strap, follow all electrical safety procedures. An ESD wrist strap is used for static control.
  • Page 84 Figure 65. Removing the memory air baffles 6. From the pipe bracket (A) near the front of the system as shown in Figure 66 on page 71, remove the three screws (B) that secure the bracket to the system. 70 Power Systems: Servicing the 8335-GTW...
  • Page 85 Figure 66. Removing the front pipe holder 7. From the water pipe at position (C), loosen the screw (D) as shown in Figure 66 on page 71. 8. Move the water pipe and holder away from the disk drive and fan card, toward the processor. Removing and replacing parts in the 8335-GTW or 8335-GTX 71...
  • Page 86 Figure 67. Moving the front pipe away 9. Remove five screws (A) from the top of the disk drive and fan card. See Figure 68 on page 73 for the screw locations. 72 Power Systems: Servicing the 8335-GTW...
  • Page 87 Figure 68. Screw locations for the disk drive and fan card a) Remove two screws (B) from the bottom of the disk drive and fan card. b) Remove one screw (C) from each side of the disk drive and fan card. 10.

  • Page 88: Replacing The Disk Drive And Fan Card

    Figure 69. Removing the disk drive and fan card 11. Place the disk drive and fan card on the table. Replacing the disk drive and fan card in the 8335-GTW or 8335-GTX system To replace a disk drive and fan card, complete the steps in this procedure. Procedure 1.
  • Page 89 Figure 70. Inserting the disk drive and fan card Removing and replacing parts in the 8335-GTW or 8335-GTX 75...
  • Page 90 Figure 71. Routing the cables under the disk drive and fan card 4. Replace two screws (B) for the bottom of the disk drive and fan card. Figure 72 on page 77 shows the screw locations. 76 Power Systems: Servicing the 8335-GTW...
  • Page 91 Figure 72. Screw locations for the disk drive and fan card a) Replace five screws (A) at the top of the disk drive and fan card. b) Replace one screw (C) in each side of the disk drive and fan card. 5.
  • Page 92 Figure 73. Replacing the front pipe and holder 6. For the water pipe at position (C), tighten the screw (D) as shown in Figure 74 on page 79. 7. Replace the three screws (B) to secure the front water pipe bracket (A) as shown in Figure 74 on page 79.
  • Page 93 Figure 74. Replacing the front pipe holder 8. Replace the air baffles (A) and (B) as shown in Figure 75 on page 80. Carefully move the baffles around the hoses. Removing and replacing parts in the 8335-GTW or 8335-GTX 79...

  • Page 94: Disk And Fan Signal Cable

    Removing and replacing the disk and fan signal cable in the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX Learn how to remove and replace a disk and fan signal cable in the IBM Power System AC922 (8335-GTC, 8335-GTG, and 8335-GTH) or IBM Power System AC922 (8335-GTW and 8335-GTX) system.

  • Page 95: Removing The Disk And Fan Signal Cable

    Removing the disk and fan signal cable from the 8335-GTC, 8335-GTG, 8335-GTH, 8335- GTW, or 8335-GTX system To remove a disk and fan signal cable, complete the steps in this procedure. Before you begin Power off the system and place it in the service position. For instructions, see “Preparing the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system to remove and replace internal parts”...
  • Page 96 Figure 76. Location of the disk and fan signal cable and connectors 3. Release the cable from the retaining clip on the inside wall of the system. 4. Label and disconnect the disk and fan signal cable (A) from the disk drive and fan card (B) and from the system backplane (C).

  • Page 97: Replacing The Disk And Fan Signal Cable

    Figure 77. Removing the disk and fan signal cable 5. Place the cable on the table. Replacing the disk and fan signal cable in the 8335-GTC, 8335-GTG, 8335-GTH, 8335- GTW, or 8335-GTX system To replace a disk and fan signal cable, complete the steps in this procedure. Procedure 1.

  • Page 98: Fans

    Figure 78. Replacing the disk and fan signal cable 3. Secure the cable in the retaining clip on the inside wall of the system. What to do next Prepare the system for operation. For instructions, see “Preparing the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system for operation after you remove and replace internal parts”...
  • Page 99 The ESD wrist strap must be connected to an unpainted metal surface until the service procedure is completed, and if applicable, until the service access cover is replaced. Attention: • Attach an electrostatic discharge (ESD) wrist strap to the front ESD jack, to the rear ESD jack, or to an unpainted metal surface of your hardware to prevent the electrostatic discharge from damaging your hardware.

  • Page 100: Replacing A Fan

    3. While you hold onto the fan handle and use your hand to support the bottom of the fan, pull out the fan from its slot. Replacing a fan in the 8335-GTW or 8335-GTX system To replace a fan, complete the steps in this procedure. Procedure 1.

  • Page 101: Fan Power Cable

    Removing and replacing the fan power cable in the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system Learn how to remove and replace the fan power cable in the IBM Power System AC922 (8335-GTC, 8335- GTG, and 8335-GTH) or IBM Power System AC922 (8335-GTW and 8335-GTX) system.
  • Page 102 Figure 81. Location of the fan power cable and connectors 3. Grasp the connector end of the fan power cable that is connected to the power riser. See (A) in Figure 82 on page 90. 4. While you press the latch release lever with your thumb, disconnect the cable from the connector. 88 Power Systems: Servicing the 8335-GTW...
  • Page 103 Note: The latch release on the connector must be pressed before you unplug the cable. Failure to do so might damage the cable and the connector. 5. Disconnect the fan power cable connector end from the disk drive and fan card. 6.

  • Page 104: Replacing The Fan Power Cable

    Figure 82. Removing the fan power cable from the system Replacing the fan power cable in the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system To replace a fan power cable, complete the steps in this procedure. Procedure 1. Ensure that you have the electrostatic discharge (ESD) wrist strap on and that the ESD clip is plugged into a ground jack or connected to an unpainted metal surface.

  • Page 105: Graphics Processing Unit

    Figure 83. Installing the fan power cable What to do next Prepare the system for operation. For instructions, see “Preparing the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system for operation after you remove and replace internal parts” on page 202. Removing and replacing a graphics processing unit in the 8335-GTW or 8335-GTX system Learn how to remove and replace a graphics processing unit (GPU) in the system.
  • Page 106 About this task Attention: For safety and airflow purposes, if you remove parts from the system, you must ensure that the PCIe tailstock fillers are present. As part of the GPU replacement, the cold plate is removed. Each GPU must have thermal interface material (TIM) between the GPU and the cold plate.
  • Page 107 Figure 84. Open the cold plate retainer b) Lift the cold plate (A) off the GPUs that you are removing and attach the cold plate to the service hook (B) as shown in Figure 85 on page 94. Removing and replacing parts in the 8335-GTW or 8335-GTX 93...
  • Page 108 Figure 85. Remove the cold plate; attach to clip 5. For the GPU you are removing, remove the eight screws shown in Figure 86 on page 95. Attention: Do not unscrew the four spring-loaded screws that attach the aluminum heat cover to the GPU.
  • Page 109 Figure 86. Remove eight GPU screws per GPU; do not loosen the four spring-loaded screws 6. Remove the GPU from the system backplane. Be careful of the pins on the bottom of the GPUs to avoid damaging the pins and the GPU. See Figure 87 on page 96.

  • Page 110: Replacing The Graphics Processing Unit In A Water-Cooled System

    Figure 87. Remove GPU Replacing the graphics processing unit in a water-cooled 8335-GTW or 8335-GTX system To replace a graphics processing unit in a water-cooled system, complete the steps in this procedure. Procedure 1. Ensure that you have the electrostatic discharge (ESD) wrist strap on and that the ESD clip is plugged into a ground jack or connected to an unpainted metal surface.
  • Page 111 Figure 88. Replace GPU 4. Secure the GPU to the system backplane. Use a #2 Phillips head screw driver. Tighten the screws in the sequence that is shown in Figure 89 on page 98. Start with the inner four screws. Thread the inner four screws half-way using the sequence that is shown.
  • Page 112 Figure 89. Replacing the GPU assembly into GPU socket 5. Place a new TIM on each of the aluminum heat covers of each GPU, for the cold plate that you are replacing. See Figure 90 on page 99 for the orientation. The part number is 00E5133.
  • Page 113 Figure 90. TIM orientation 6. Replace the GPU cold plate. a) Unhook the cold plate (A) from the service hook (B) and carefully align the cold plate on 2 or 3 GPUs. See Figure 91 on page 100. Removing and replacing parts in the 8335-GTW or 8335-GTX 99...
  • Page 114 Figure 91. Aligning the cold plate on the GPUs b) Beginning with the middle GPU, swing the retainer over the GPU and code plate, then tighten the cold plate retainer screw as shown in Figure 92 on page 101. Repeat this step for each of the remaining GPUs. 100 Power Systems: Servicing the 8335-GTW...

  • Page 115: Memory Modules

    Figure 92. Secure the cold plate retainer screw c) Return the service hook to its latched position on the bracket. 7. Replace the air baffles you removed. 8. Place the protective covers on the bottom of the replaced GPUs. This protects the pins when returning the GPU. What to do next Prepare the system for operation.

  • Page 116: Removing And Replacing Memory Modules

    Removing and replacing memory modules in the 8335-GTW or 8335-GTX system To remove and replace memory modules, complete the steps in this procedure. Before you begin Power off the system and place it in the service position. For instructions, see “Preparing the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system to remove and replace internal parts”...
  • Page 117 Figure 93. Removing the memory air baffles 3. Locate the memory module to remove. Figure 94 on page 104 shows the location of the memory modules. Removing and replacing parts in the 8335-GTW or 8335-GTX 103...
  • Page 118 Figure 94. Location of the memory modules 4. Remove the memory module from the slot. a) Unlock the memory module by pushing the locking tabs away from the memory module, in the direction shown in Figure 95 on page 105. The lever action of opening the tabs pushes the memory module out of the slot.
  • Page 119 Figure 95. Removing a memory module b) Hold the memory module by the edges and pull it out of the slot. 5. Place the memory module on an ESD mat. Replace: 6. To replace a memory module, complete the following steps: a) Push the locking tabs to the open position, away from the slot, in the direction shown in Figure 96 on page 106.
  • Page 120 Figure 96. Replacing a memory module b) Grasp the memory module along its edges and align it with the slot. Attention: The memory module is keyed to prevent it from being installed incorrectly. Note the location of the key tab within the memory connector before you attempt to install it. c) Press firmly on each side of the memory module until the locking tab locks in place with an audible click.

  • Page 121: Memory Plugging Rules

    Figure 97. Replacing the memory air baffles What to do next Prepare the system for operation. For instructions, see “Preparing the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system for operation after you remove and replace internal parts” on page 202. Memory plugging rules in the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system Learn the memory placement rules for the system.

  • Page 122: Pcie Adapters

    Removing and replacing PCIe adapters in the 8335-GTC, 8335-GTG, 8335- GTH, 8335-GTW, or 8335-GTX system Learn about removing and replacing Peripheral Component Interconnect (PCI) Express (PCIe) adapters in the IBM Power System AC922 (8335-GTC, 8335-GTG, and 8335-GTH) or IBM Power System AC922 (8335-GTW and 8335-GTX) system. About this task...

  • Page 123: Replacing A Pcie Adapter

    • If you do not have an ESD wrist strap, just prior to removing the product from ESD packaging and installing or replacing hardware, touch an unpainted metal surface of the system for a minimum of 5 seconds. If at any point in this service process you move away from the system, it is important to again discharge yourself by touching an unpainted metal surface for at least 5 seconds before you continue with the service process.

  • Page 124: Power Supplies

    Removing and replacing a power supply in the 8335-GTC, 8335-GTG, 8335- GTH, 8335-GTW, or 8335-GTX system Find information about removing and replacing power supplies in the IBM Power System AC922 (8335- GTC, 8335-GTG, and 8335-GTH) or IBM Power System AC922 (8335-GTW and 8335-GTX) system.

  • Page 125: Removing A Power Supply

    Removing a power supply from the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system To replace a power supply, complete the steps in this procedure. About this task If one of the power supplies failed on a system with four GPUs, the power supply can be replaced while the system is running.
  • Page 126 DANGER: Multiple power cords. The product might be equipped with multiple AC power cords or multiple DC power cables. To remove all hazardous voltages, disconnect all power cords and power cables. (L003) (L005) 112 Power Systems: Servicing the 8335-GTW...
  • Page 127 CAUTION: Hazardous energy present. Voltages with hazardous energy might cause heating when shorted with metal, which might result in splattered metal, burns, or both. (L005) 3. Remove the power supplies from the system as shown in Figure 100 on page 113. a) To release a power supply from its position in the system, pull the locking-tab (A) to the left.

  • Page 128: Replacing A Power Supply

    Replacing a power supply in the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335- GTX system To remove a power supply, complete the steps in this procedure. Procedure 1. Ensure that you have the electrostatic discharge (ESD) wrist strap on and that the ESD clip is plugged into a ground jack or connected to an unpainted metal surface.

  • Page 129: Removing The Power Switch And Cable

    Removing the power switch and cable from the 8335-GTW system To remove a power switch and cable, complete the steps in this procedure. Before you begin Power off the system and place it in the service position. For instructions, see “Preparing the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system to remove and replace internal parts”...
  • Page 130 Figure 102. Removing the power switch and cable from the system backplane 4. Remove the rack installation support from the side of the system as shown in Figure 103 on page 117. 116 Power Systems: Servicing the 8335-GTW...
  • Page 131 Figure 103. Removing the rack installation support 5. Remove the top and side screws from the power switch as shown in Figure 104 on page 118. Removing and replacing parts in the 8335-GTW or 8335-GTX 117...
  • Page 132 Figure 104. Remove the top and side screws 6. Pull the power switch from the system as shown in Figure 105 on page 119. 118 Power Systems: Servicing the 8335-GTW...

  • Page 133: Replacing The Power Switch And Cable

    Figure 105. Pull out the power switch and cable 7. Place the power switch and cable on the table. Replacing the power switch and cable in the 8335-GTW system To replace a power switch and cable, complete the steps in this procedure. Procedure 1.
  • Page 134 Figure 106. Replacing the power switch and cable into the system backplane 4. Replace the top and side screws for the power switch as shown in Figure 107 on page 121. 120 Power Systems: Servicing the 8335-GTW...
  • Page 135 Figure 107. Replace the top and side screws 5. Using the labels, plug the power switch and cable (A) to the system backplane as shown in Figure 108 on page 122. Ensure that the cable latch clip snaps into place on the connectors. Removing and replacing parts in the 8335-GTW or 8335-GTX 121...
  • Page 136 Figure 108. Plugging in the power switch and cable 6. Replace the rack installation support on the side of the system as shown in Figure 109 on page 123. 122 Power Systems: Servicing the 8335-GTW...

  • Page 137: System Backplane

    8335-GTW, or 8335-GTX system for operation after you remove and replace internal parts” on page 202. Removing and replacing the system backplane in the 8335-GTW Learn how to remove and replace the system backplane in the IBM Power System AC922 (8335-GTW and 8335-GTX) system.

  • Page 138: Removing The System Backplane

    About this task As part of the system backplane replacement, the cold plates are removed from the system processor modules and GPUs. Each module and GPU must have thermal interface material (TIM) between the module, the GPU, and the cold plate. If the processor TIM is damaged, it must be replaced. GPU TIMs must always be replaced.
  • Page 139 Figure 110. Removing the memory air baffles 3. Remove the BMC card. For instructions, see “Removing the BMC card from the 8335-GTC, 8335-GTG, 8335-GTH, 8335- GTW, or 8335-GTX system” on page 3. 4. Label and remove the PCIe adapters. For instructions, see “Removing a PCIe adapter from the 8335-GTC, 8335-GTG, 8335-GTH, 8335- GTW, or 8335-GTX system”...
  • Page 140 9. Using tweezers, carefully remove the TIM from the top of the system processor module and place it in a clean, dry area as shown in Figure 111 on page 126. The TIM can tear easily. Figure 111. Removing the TIM from the system processor module 10.
  • Page 141 Figure 112. Removing dust and debris from the system processor module area 11. Prepare the system processor module for removal. a) Open the latches that hold the system processor module in the supplied removal tool (A). Push down on the ring (B) while pressing in on the tabs (C). See Figure 113 on page 128.
  • Page 142 Figure 113. Opening the processor removal tool latches b) Lower the tool over the system processor module while ensuring that the two guide pins (A) insert into the alignment holes (B) on each side of the tool. See Figure 114 on page 129. 128 Power Systems: Servicing the 8335-GTW...
  • Page 143 Figure 114. Lowering the removal tool onto the system processor module c) With the removal tool sitting on top of the system processor module, push down on the ring (A) to close the latches (C) and lock the system processor module into the tool. Make sure that both of the tool jaws are locked on the system processor module.
  • Page 144 Figure 115. Locking the system processor module into the tool 12. Holding the outside of the tool, lift the tool and system processor module from the socket. Place them at an angle in the top cover of the system processor module packaging, as shown in Figure 116 on page 131.
  • Page 145 Figure 116. Placing the tool at an angle on the top cover of the packaging 13. Open the latches that hold the system processor module in the supplied removal tool (A). Push down on the ring (B) while pressing in on the tabs (C). See Figure 117 on page 132.
  • Page 146 Figure 117. Releasing the system processor module from the tool 14. Remove one screw (B) from each side of the middle support (A). See Figure 118 on page 133. 132 Power Systems: Servicing the 8335-GTW...
  • Page 147 Figure 118. Remove the middle support side screws 15. Unscrew and remove 22 screws at locations (A), (B), and (C) from the system backplane and supports. The screw locations are shown in Figure 119 on page 134. The screws at (A) are the shortest. The screws at (B) and (C) are longer and secure the pipe supports.
  • Page 148 Figure 119. System backplane screw locations 16. Using the two blue handles (A), lift the system backplane (B) straight up to remove it. See Figure 120 on page 135. 134 Power Systems: Servicing the 8335-GTW...

  • Page 149: Replacing The System Backplane

    Figure 120. Lifting out the system backplane 17. Place the system backplane on the ESD mat. Replacing the system backplane in the 8335-GTW To replace a system backplane, complete the steps in this procedure. Procedure 1. Ensure that you have the electrostatic discharge (ESD) wrist strap on and that the ESD clip is plugged into a ground jack or connected to an unpainted metal surface.
  • Page 150 Figure 121. Lowering the system backplane into the system 4. Replace the three metal pipe supports at (B) (two smaller supports) and (C) (one longer support). Align and tighten the 22 screws into the system backplane at (A) and into the pipe supports at (B) and (C).
  • Page 151 Figure 122. System backplane screw locations 5. Ensure that the jumper shown in Figure 123 on page 138 is set to the water cooled position. Removing and replacing parts in the 8335-GTW or 8335-GTX 137...
  • Page 152 Figure 123. Jumper in water-cooled position 6. Replace one screw (B) on each side of the middle support (A). See Figure 124 on page 139. 138 Power Systems: Servicing the 8335-GTW...
  • Page 153 Figure 124. Replacing the middle support screws 7. Transfer the GPUs from the old system backplane to the new system backplane. Ensure that you use new TIMs on each of the GPUs. For instructions, see “Replacing the graphics processing unit in a water-cooled 8335-GTW or 8335- GTX system”...
  • Page 154 Figure 125. Opening the processor removal tool latches b) Lower the tool over the system processor module while ensuring that the two guide pins (A) insert into the alignment holes (B) on each side of the tool. See Figure 126 on page 141. 140 Power Systems: Servicing the 8335-GTW...
  • Page 155 Figure 126. Lowering the removal tool onto the system processor module c) With the removal tool sitting on top of the system processor module, push down on the ring (A) to close the latches (C) and lock the system processor module into the tool. Make sure that both of the tool jaws are locked on the system processor module.
  • Page 156 Figure 127. Locking the system processor module into the tool 10. Hold the sides of the tool with system processor module and carefully lift the tool out of the system processor module tray. 11. Install the system processor module: a) If dust or debris is present on the system processor socket, use the supplied air pump to clean the socket.
  • Page 157 Figure 128. Removing dust and debris from the system processor socket b) Lower the tool and system processor module onto the socket. Align the guide pins (A) with the alignment holes (B) on each side of the tool. Use care to lower the tool evenly without tilting the tool.
  • Page 158 Figure 129. Installing the system processor module c) Open the latches that hold the system processor module in the supplied removal tool (A). Push down on the ring (B) while pressing in on the tabs (C). See Figure 130 on page 145. 144 Power Systems: Servicing the 8335-GTW...
  • Page 159 Figure 130. Removing the system processor module tool d) Lift the tool off the system processor module. 12. Inspect the thermal interface material (TIM) for visible signs of damage, as shown in Figure 131 on page 146. If you see folds, tears, bends, or if you have doubts about the TIM, replace it. Removing and replacing parts in the 8335-GTW or 8335-GTX 145...
  • Page 160 Figure 131. Inspecting the thermal interface material 13. Choose one of the following repair options: Option Description Is the TIM damaged? It is damaged. Proceed to step “14” on page 146 to replace the TIM and install the cold plate. Is the TIM OK? It is not damaged and can be reused.
  • Page 161 Figure 132. Installing a new TIM onto the system processor module Continue with step “16” on page 148. 15. Use this step to reuse the existing undamaged TIM and heat sink. a) Using the tweezers, move the old TIM from the clean, dry surface and center it onto the new system processor module.
  • Page 162 Figure 133. Replacing the TIM onto the system processor module 16. Replace the cold plates. For instructions, see “Replacing the cold plates in the 8335-GTW or 8335-GTX system” on page 45. 17. Using your labels, replace the power switch and cable into that connector in the system backplane. For instructions, see “Replacing the power switch and cable in the 8335-GTW system”...

  • Page 163: Preparing The System For Operation After Replacing The System Backplane

    For instructions, see “Removing and replacing memory modules in the 8335-GTW or 8335-GTX system” on page 102. 23. Replace the air baffles (A) and (B) as shown in Figure 134 on page 149. Carefully move the baffles around the hoses. Figure 134.

  • Page 164: System Processor Module

    Learn how to remove and replace a system processor module or how to upgrade all of the system processor modules in the IBM Power System AC922 (8335-GTW and 8335-GTX) system. Removing a system processor module from the 8335-GTW or 8335-GTX system To remove a system processor module, complete the steps in this procedure.
  • Page 165 About this task As part of the system processor module replacement, the cold plate is removed. Each module must have thermal interface material (TIM) between the module and the cold plate. If the TIM is damaged, it must be replaced. Ensure that you have spare system processor TIMs available before proceeding. Procedure 1.
  • Page 166 3. Remove the air baffles (A) and (B) as shown in Figure 136 on page 152. Carefully move the baffles around the hoses. Figure 136. Removing the memory air baffles 4. Remove the cold plate from the system processor module. a) Apply light pressure downward on the cold plate.
  • Page 167 Figure 137. Loosening the cold plate retainer screw b) Lift the cold plate (A) straight up off the system processor module and attach the protective cover (B) to the cold plate as shown in Figure 138 on page 153. Figure 138. Removing the cold plate and attaching the protective cover c) Move the cold plate and cover off to the side, away from the system processor module.
  • Page 168 5. Using tweezers, carefully remove the TIM from the top of the system processor module and place it in a clean, dry area as shown in Figure 139 on page 154. The TIM can tear easily. Figure 139. Removing the TIM from the system processor module 6.
  • Page 169 Figure 140. Removing dust and debris from the system processor module area 7. Prepare the system processor module for removal. a) Open the latches that hold the system processor module in the supplied removal tool (A). Push down on the ring (B) while pressing in on the tabs (C). See Figure 141 on page 156.
  • Page 170 Figure 141. Opening the processor removal tool latches b) Lower the tool over the system processor module while ensuring that the two guide pins (A) insert into the alignment holes (B) on each side of the tool. See Figure 142 on page 157. 156 Power Systems: Servicing the 8335-GTW...
  • Page 171 Figure 142. Lowering the removal tool onto the system processor module c) With the removal tool sitting on top of the system processor module, push down on the ring (A) to close the latches (C) and lock the system processor module into the tool. Make sure that both of the tool jaws are locked on the system processor module.
  • Page 172 Figure 143. Locking the system processor module into the tool 8. Holding the outside of the tool, lift the tool and system processor module from the socket. Place them at an angle in the top cover of the system processor module packaging, as shown in Figure 144 on page 159.
  • Page 173 Figure 144. Placing the tool at an angle on the top cover of the packaging 9. Open the latches that hold the system processor module in the supplied removal tool (A). Push down on the ring (B) while pressing in on the tabs (C). See Figure 145 on page 160.

  • Page 174: Replacing The System Processor Module

    Figure 145. Releasing the system processor module from the tool Replacing a system processor module in a 8335-GTW or 8335-GTX system To replace a system processor module, complete the steps in this procedure. Procedure 1. Ensure that you have the electrostatic discharge (ESD) wrist strap on and that the ESD clip is plugged into a ground jack or connected to an unpainted metal surface.
  • Page 175 Figure 146. Opening the processor removal tool latches b) Lower the tool over the system processor module while ensuring that the two guide pins (A) insert into the alignment holes (B) on each side of the tool. See Figure 147 on page 162. Removing and replacing parts in the 8335-GTW or 8335-GTX 161...
  • Page 176 Figure 147. Lowering the removal tool onto the system processor module c) With the removal tool sitting on top of the system processor module, push down on the ring (A) to close the latches (C) and lock the system processor module into the tool. Make sure that both of the tool jaws are locked on the system processor module.
  • Page 177 Figure 148. Locking the system processor module into the tool 4. Hold the sides of the tool with system processor module and carefully lift the tool out of the system processor module tray. 5. Install the system processor module: a) If dust or debris is present on the system processor socket, use the supplied air pump to clean the socket.
  • Page 178 Figure 149. Removing dust and debris from the system processor socket b) Lower the tool and system processor module onto the socket. Align the guide pins (A) with the alignment holes (B) on each side of the tool. Use care to lower the tool evenly without tilting the tool.
  • Page 179 Figure 150. Installing the system processor module c) Open the latches that hold the system processor module in the supplied removal tool (A). Push down on the ring (B) while pressing in on the tabs (C). See Figure 151 on page 166. Removing and replacing parts in the 8335-GTW or 8335-GTX 165...
  • Page 180 Figure 151. Removing the system processor module tool d) Lift the tool off the system processor module. 6. Inspect the thermal interface material (TIM) for visible signs of damage, as shown in Figure 152 on page 167. If you see folds, tears, bends, or if you have doubts about the TIM, replace it. 166 Power Systems: Servicing the 8335-GTW...
  • Page 181 Figure 152. Inspecting the thermal interface material 7. Choose one of the following repair options: Option Description Is the TIM damaged? It is damaged. Proceed to step “8” on page 167 to replace the TIM and install the cold plate. Is the TIM OK? It is not damaged and can be reused.
  • Page 182 Figure 153. Installing a new TIM onto the system processor module Continue with step “10” on page 169. 9. Use this step to reuse the existing undamaged TIM and heat sink. a) Using the tweezers, move the old TIM from the clean, dry surface and center it onto the new system processor module.
  • Page 183 Figure 154. Replacing the TIM onto the system processor module 10. Install the cold plate. a) Remove the protective cover (B) from the cold plate (A) as shown in Figure 155 on page 169. Figure 155. Removing the protective cover from the cold plate b) Using the alignment pins, carefully place the cold plate straight down onto the system processor module.
  • Page 184 c) Maintain slight downward pressure on the coldplate to ensure that it and the system processor module do not move. d) Tighten the cold plate retainer screw with the supplied hex key as shown in Figure 156 on page 170. Figure 156.
  • Page 185 Figure 157. Replacing the memory air baffles 12. Lightly grip the system processor module that you replaced by the edges and lift it off the packaging cover. Align the beveled corner of the module (A) to the corner of the packaging with triangle (B) and place it in the packaging, as shown in Figure 158 on page 172.

  • Page 186: Upgrading System Processor Modules

    Figure 158. Placing the system processor module into the packaging What to do next Prepare the system for operation. For instructions, see “Preparing the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system for operation after you remove and replace internal parts” on page 202. Upgrading system processor modules in a 8335-GTW or 8335-GTX system To upgrade system processor modules, complete the steps in this procedure.

  • Page 187: Time-Of-Day Battery

    For instructions, see “Removing a system processor module from the 8335-GTW or 8335-GTX system” on page 150. 4. Replace all the system processor modules. For instructions, see “Replacing a system processor module in a 8335-GTW or 8335-GTX system” on page 160. Removing and replacing the time-of-day battery in the 8335-GTC, 8335- GTG, 8335-GTH, 8335-GTW, or 8335-GTX system To remove and replace the time-of-day battery, complete the steps in this procedure.
  • Page 188 Figure 159. Removing the time-of-day battery from the system backplane Replacing: 3. Insert the time-of-day battery in the slot on the system backplane as shown in Figure 160 on page 175. Ensure to insert the battery with the correct polarity as recorded during removing of the battery. 174 Power Systems: Servicing the 8335-GTW...

  • Page 189: Water Manifold

    Removing and replacing the water manifold for the 8335-GTW or 8335-GTX system Learn how to remove and replace the water manifold in the IBM Power System AC922 (8335-GTW and 8335-GTX) system. Preparing the 8335-GTW or 8335-GTX system to remove and replace the water manifold To prepare the system to remove and replace a water manifold, complete the steps in this procedure.
  • Page 190 4. Disconnect the power source from the system by unplugging the system. For instructions, see “Disconnecting power cords from an 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system” on page 214. Note: The system might be equipped with redundant power supply. Before you continue with this procedure, ensure that all power to your system is disconnected.
  • Page 191 DANGER: Multiple power cords. The product might be equipped with multiple AC power cords or multiple DC power cables. To remove all hazardous voltages, disconnect all power cords and power cables. (L003) (L005) CAUTION: Hazardous energy present. Voltages with hazardous energy might cause heating when shorted with metal, which might result in splattered metal, burns, or both.
  • Page 192 Figure 161. Removing the power supplies from the system 6. Repeat steps “4” on page 176 - “5” on page 177 for all the systems in the rack. 7. Label and disconnect the external cables that are connected to the systems that are in the rack. 8.

  • Page 193: Removing The Water Manifold

    Figure 162. Disconnecting the water hoses 9. Remove the system from the rack. CAUTION: This system requires two people to remove the system from the rack. For instructions, see “Placing an 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system into the service position” on page 209. If your rack has slider rails; remove the system from the rails. 10.
  • Page 194 Figure 163. Closing the manifold and facility water hose valves 2. Repeat step “1” on page 179 to close the valve of the facility water return hose. 3. Twist the quick connect ball valve fittings on the manifold hose and on the facility water supply hose a quarter-turn in the direction shown.
  • Page 195 Figure 164. Disconnecting the hoses 4. Repeat step “3” on page 180 to disconnect the facility water return hose. 5. Loosen the four nuts that attach the manifold to the mounting brackets by using a 7 mm nut driver. Then, remove the manifold. Removing and replacing parts in the 8335-GTW or 8335-GTX 181...
  • Page 196 Figure 165. Removing the manifold 6. Drain the remaining water in the manifold by completing the following steps: Note: Two people are needed to properly drain the manifold. a) Have a bucket ready to collect the water of at least 2 gallons. b) Hold the manifold upright, with the hoses face down.

  • Page 197: Replacing The Water Manifold

    Figure 166. Opening the ball valve e) A second person is needed to raise the manifold assembly above the hose and the bucket so that the water can drain from the manifold and the hose into the bucket. f) Repeat step “6” on page 182 for the remaining water hose. Replacing the water manifold in the 8335-GTW or 8335-GTX system To replace a water manifold, complete the steps in this procedure.
  • Page 198 Figure 167. Removing the manifold Z brackets b) Flip the manifold halves so that the hoses are at the top of the manifold. Ensure that the following criteria are met: • The supply manifold half is toward the inside of the rack. •...
  • Page 199 Figure 168. Installing the manifold z brackets 2. Align the manifold to the mounting bracket slots, then attach the manifold by using a 7 mm nut driver. Removing and replacing parts in the 8335-GTW or 8335-GTX 185...
  • Page 200 Figure 169. Installing the manifold with the hoses exiting the bottom of the rack 3. Connect the facility water supply hose to the manifold hose. Align the two quick connect ball valve fittings, then turn the fittings a quarter-turn to lock the fittings. Then, press the pin on the lever and turn the lever 90 degrees to open one side of the valve.

  • Page 201: Preparing The System For Operation After Replacing The Water Manifold

    Figure 170. Connecting the hoses and opening the valves 4. Repeat step “3” on page 186 to connect the facility water return hose to the manifold hose. Preparing the 8335-GTW or 8335-GTX system for operation after you remove and replace the water manifold To prepare the system for operation after removing and replacing a water manifold, complete the steps in this procedure.
  • Page 202 Figure 171. Reconnecting the water hoses 5. Repeat step “1” on page 187 through step “4” on page 187 for each system in the rack. 6. Replace the power supplies as shown in Figure 172 on page 189. a) Place your other hand underneath the power supply. b) Align the power supply (A) with the bay with the fan to the left.
  • Page 203 8335-GTX system ” on page 204. 10. Repeat step “9” on page 189 for all the systems in the rack. 11. Verify the installed part. See Verifying a repair (www.ibm.com/support/knowledgecenter/POWER9/p9ei3/ p9ei3_verifyrepair.htm). Removing and replacing parts in the 8335-GTW or 8335-GTX 189...
  • Page 204 190 Power Systems: Servicing the 8335-GTW...

  • Page 205: Common Procedures For Servicing Or Installing Features

    Electrical voltage and current from power, telephone, and communication cables are hazardous. To avoid a shock hazard: • If IBM supplied the power cord(s), connect power to this unit only with the IBM provided power cord. Do not use the IBM provided power cord for any other product.
  • Page 206 circuit breakers located in the rack power distribution panel (PDP), and disconnect any telecommunications systems, networks, and modems. DANGER: • Connect and disconnect cables as described in the following procedures when installing, moving, or opening covers on this product or attached devices. To Disconnect: 1.
  • Page 207 – For racks with a DC power distribution panel (PDP), turn off the circuit breaker that controls the power to the system unit(s), or disconnect the customer’s DC power source, when directed to disconnect power during servicing. • Connect all devices installed in a rack cabinet to power devices installed in the same rack cabinet.
  • Page 208 DANGER: Multiple power cords. The product might be equipped with multiple AC power cords or multiple DC power cables. To remove all hazardous voltages, disconnect all power cords and power cables. (L003) (L005) 194 Power Systems: Servicing the 8335-GTW...

  • Page 209: Identifying The System That Contains The Part To Replace

    LEDs on the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system Use this information as a guide to the LEDs on the IBM Power System AC922 (8335-GTC, 8335-GTG, and 8335-GTH) or IBM Power System AC922 (8335-GTW and 8335-GTX) system.
  • Page 210 • The green LED indicates the power status. – A constant light indicates full system power to the unit. – A flashing light indicates standby power to the unit. • The blue LED is used to identify the system that requires service. •...

  • Page 211: Identifying The System

    Figure 175. Rear LEDs LED indicators are on the following parts: • At the front of the system: – Disk drives (green LED indicates activity; amber LED indicates a problem). – Fans (green LED indicates activity; amber LED indicates a problem). •...

  • Page 212: Preparing The System To Remove And Replace Internal Parts

    Preparing the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system to remove and replace internal parts To prepare the IBM Power System AC922 (8335-GTC, 8335-GTG, and 8335-GTH) or IBM Power System AC922 (8335-GTW and 8335-GTX) system to remove and replace internal parts, complete the steps in this procedure.
  • Page 213 Common procedures for servicing or installing features in the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system 199...
  • Page 214 DANGER: Multiple power cords. The product might be equipped with multiple AC power cords or multiple DC power cables. To remove all hazardous voltages, disconnect all power cords and power cables. (L003) (L005) CAUTION: Hazardous energy present. Voltages with hazardous energy might cause heating when shorted with metal, which might result in splattered metal, burns, or both.
  • Page 215 Figure 176. Removing the power supplies from the system 10. Place the system into the service position. For instructions, see “Placing an 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system into the service position” on page 209. CAUTION: Do not place any object on top of a rack-mounted device unless that rack-mounted device is intended for use as a shelf.

  • Page 216: Preparing The System For Operation

    Preparing the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system for operation after you remove and replace internal parts To prepare the IBM Power System AC922 (8335-GTC, 8335-GTG, and 8335-GTH) or IBM Power System AC922 (8335-GTW and 8335-GTX) system for operation after you remove and replace internal parts, complete the steps in this procedure.
  • Page 217 8. If the BMC card was replaced continue to the next step, otherwise go to step “11” on page 203. 9. Configure the BMC IP address. For instructions, see Configuring the BMC IP address (www.ibm.com/support/knowledgecenter/ POWER9/p9eih/p9eih_configuring_bmc_ip.htm). 10. Enter the network settings that you recorded earlier.

  • Page 218: Starting And Stopping The System

    Starting and stopping the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system Learn how to start and stop the IBM Power System AC922 (8335-GTC, 8335-GTG, and 8335-GTH) or IBM Power System AC922 (8335-GTW and 8335-GTX) system to perform a service action or system upgrade operation.

  • Page 219: Stopping The 8335-Gtc, 8335-Gtg, 8335-Gth, 8335-Gtw, Or 8335-Gtx System

    Stopping the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system You can use the power button or a command to stop the system. Procedure • You can press and hold the power button to stop and power off the system. Figure 179. Power button •...

  • Page 220: Removing And Replacing Covers

    Removing and replacing covers on an 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system Learn how to remove and replace the covers for an IBM Power System AC922 (8335-GTC, 8335-GTG, and 8335-GTH) or IBM Power System AC922 (8335-GTW and 8335-GTX) system so that you can access the hardware parts or service the system.

  • Page 221: Installing The Service Access Cover

    Figure 180. Removing the cover 3. While you press down on latch (B) and touch point (C), slide the cover (D) towards the rear of the system unit. When the front of the service access cover clears the upper frame ledge, lift the cover up and off the system unit.

  • Page 222: Removing The

    Figure 181. Installing the cover Removing the front cover from an 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335- GTX system To remove the front cover, complete the steps in this procedure. Procedure 1. If necessary, open the front rack door. 2. Ensure that you have the electrostatic discharge (ESD) wrist strap on and that the ESD clip is plugged into a ground jack or connected to an unpainted metal surface.

  • Page 223: Installing The

    Service and operating positions for the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system Learn how to place on an IBM Power System AC922 (8335-GTC, 8335-GTG, and 8335-GTH) or IBM Power System AC922 (8335-GTW and 8335-GTX) system into the service or operating position.
  • Page 224 Figure 182. Placing the system into the service position 3. Pull the system unit out of the rack. Fixed rails Use this procedure when your system is installed using fixed rails. Before you begin CAUTION: This system requires two people to remove the system from the rack. Do not begin this procedure unless physical assistance is available to remove the system from the rack.

  • Page 225: Placing The System Into The Operating Position

    Figure 183. Disconnecting the water hoses 3. Remove the screws on either side of the system that secure the system to the rack. 4. While one person is supporting the weight of the front of the system, have the second person move to the rear of the system and push the system partially out of the rack.
  • Page 226 Slide rails Use this procedure when your system is installed using slide rails. Before you begin When you place the system in the operating position, ensure that the cables at the rear of the system do not catch or bind as you push the system unit back into the rack. Procedure 1.
  • Page 227 Fixed rails Use this procedure when your system is installed using fixed rails. Before you begin CAUTION: This system requires two people to replace the system into the rack. Do not begin this procedure unless physical assistance is available to replace the system into the rack. Note: When you place the system into the operating position, you must ensure that all stability plates are firmly installed to prevent the rack from toppling.

  • Page 228: Removing And Replacing Power Cords

    Removing and replacing power cords in the 8335-GTC, 8335-GTG, 8335- GTH, 8335-GTW, or 8335-GTX system Find information about removing and replacing power cords in an IBM Power System AC922 (8335-GTC, 8335-GTG, and 8335-GTH) or IBM Power System AC922 (8335-GTW and 8335-GTX) system.
  • Page 229 Figure 186 on page 215 and Figure 187 on page 216 shows how to loop the cables. Figure 186. Routing the power cord loop in the cable management arm Common procedures for servicing or installing features in the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system 215...
  • Page 230 Figure 187. Power cord loop with sidewall routing 4. Disconnect the power cords from the system unit as shown in Figure 188 on page 217. Note: This system might be equipped with two or more power supplies. If the removing and replacing procedures require the power to be off, then ensure that all the power sources to the system are disconnected.

  • Page 231: Connecting Power Cords

    Figure 188. Removing the power cords from the system Connecting power cords to an 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system To connect a power cord, complete the steps in this procedure. Procedure 1. Open the rear rack door on the system unit that you are servicing. 2.
  • Page 232 Figure 190 on page 218 and Figure 191 on page 219 shows how to loop the cables. Figure 190. Routing the power cord loop in the cable management arm 218 Power Systems: Servicing the 8335-GTW...
  • Page 233 Figure 191. Power cord loop with sidewall routing 4. Close the rack door at the rear of the system. Common procedures for servicing or installing features in the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system 219...
  • Page 234 220 Power Systems: Servicing the 8335-GTW...

  • Page 235: Notices

    Consult your local IBM representative for information on the products and services currently available in your area. Any reference to an IBM product, program, or service is not intended to state or imply that only that IBM product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any IBM intellectual property right may be used instead.

  • Page 236: Accessibility Features For Ibm Power Systems Servers

    This product uses standard navigation keys. Interface information The IBM Power Systems servers user interfaces do not have content that flashes 2 - 55 times per second. The IBM Power Systems servers web user interface relies on cascading style sheets to render content properly and to provide a usable experience.

  • Page 237: Privacy Policy Considerations

    Contact the vendor for accessibility information about its products. Related accessibility information In addition to standard IBM help desk and support websites, IBM has a TTY telephone service for use by deaf or hard of hearing customers to access sales and support services:...

  • Page 238: Electronic Emission Notices

    Class A Notices The following Class A statements apply to the IBM servers that contain the POWER9 processor and its features unless designated as electromagnetic compatibility (EMC) Class B in the feature information.
  • Page 239 This is a Class A product based on the standard of the VCCI Council. If this equipment is used in a domestic environment, radio interference may occur, in which case, the user may be required to take corrective actions. Japan Electronics and Information Technology Industries Association Statement This statement explains the Japan JIS C 61000-3-2 product wattage compliance.
  • Page 240 Um dieses sicherzustellen, sind die Geräte wie in den Handbüchern beschrieben zu installieren und zu betreiben. Des Weiteren dürfen auch nur von der IBM empfohlene Kabel angeschlossen werden. IBM übernimmt keine Verantwortung für die Einhaltung der Schutzanforderungen, wenn das Produkt ohne Zustimmung von IBM verändert bzw.

  • Page 241: Class B Notices

    Properly shielded and grounded cables and connectors must be used in order to meet FCC emission limits. Proper cables and connectors are available from IBM-authorized dealers. IBM is not responsible for any radio or television interference caused by unauthorized changes or modifications to this equipment.
  • Page 242 This product is in conformity with the protection requirements of EU Council Directive 2014/30/EU on the approximation of the laws of the Member States relating to electromagnetic compatibility. IBM cannot accept responsibility for any failure to satisfy the protection requirements resulting from a non- recommended modification of the product, including the fitting of non-IBM option cards.
  • Page 243 Um dieses sicherzustellen, sind die Geräte wie in den Handbüchern beschrieben zu installieren und zu betreiben. Des Weiteren dürfen auch nur von der IBM empfohlene Kabel angeschlossen werden. IBM übernimmt keine Verantwortung für die Einhaltung der Schutzanforderungen, wenn das Produkt ohne Zustimmung von IBM verändert bzw.

  • Page 244: Terms And Conditions

    Permissions for the use of these publications are granted subject to the following terms and conditions. Applicability: These terms and conditions are in addition to any terms of use for the IBM website. Personal Use: You may reproduce these publications for your personal, noncommercial use provided that all proprietary notices are preserved.
  • Page 246 IBM®...

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