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When the LED is lit in amber, it indicates that the hot-swap redundant power supply is likely to fail or has failed. If your server comes with an Intelligent Diagnostics Module Premium, you also can view the LEDs on the panel of the module to locate the failing power supply. See “Diagnostic module” on page 21. 110 ThinkServer User Guide 2. If you are replacing a hot-swap redundant power supply, press the release tab 1 in the direction as shown and carefully pull the handle 2 at the same time to slide the failing hot-swap redundant power supply out of the chassis. Figure 69. Removing a hot-swap redundant power supply 3. Touch the static-protective package that contains the new hot-swap redundant power supply to any unpainted surface on the outside of the server. Then, remove the new hot-swap redundant power supply from the package. 4. Note the orientation of the new hot-swap redundant power supply and then slide it into the chassis until it snaps into position. Figure 70. Installing a hot-swap redundant power supply Chapter 6. Installing, removing, or replacing hardware 111 5. Connect the power cord to the power cord connector on the new hot-swap redundant power supply. Then, check the status LED near the power cord connector. When the LED is lit in green, it indicates that the hot-swap redundant power supply is working correctly. When the LED is lit in amber, it indicates that the hot-swap redundant power supply is likely to fail or has failed. You might need to reinstall or replace it. 6. If you are instructed to return the old hot-swap redundant power supply, follow all packaging instructions and use any packaging materials that are supplied to you for shipping. Installing or replacing a heat sink Attention: Do not open your server or attempt any repair before reading and understanding “Safety information” on page iii and “Guidelines” on page 69. This topic provides instructions on how to install or replace a heat sink. CAUTION: The heat sink might be very hot. Turn off the server and wait three to five minutes to let the server cool before removing the server cover. Before you begin, print all the related instructions or ensure that you can view the PDF version on another computer for reference. Note: Depending on the model, your server might look slightly different from the illustrations in this topic. To install or replace a heat sink, do the following: 1. Remove all media from the drives and turn off all attached devices and the server. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the server. 2. If the server is installed in a rack cabinet, remove the server from the rack cabinet and place it on a flat, clean, and static-protective surface. See the Rack Installation Instructions that comes with the server. 3. Remove the server cover. See “Removing the server cover” on page 71. 4. Remove the cooling shroud. See “Removing and reinstalling the cooling shroud” on page 76. 5. Locate the heat sink or the place for installing the second heat sink. See “Server components” on page 29. 112 ThinkServer User Guide 6. If you are replacing a heat sink, remove the four screws that secure the heat sink to the system board. It is recommended that you carefully remove the four screws from the system board using the following method to avoid any possible damage to the system board. a. Partially remove screw 1 , then completely remove screw 3 , and then return to screw 1 and completely remove it. b. Partially remove screw 2 , then completely remove screw 4 , and then return to screw 2 and completely remove it. Note: The four screws are integrated parts of the heat sink. Do not try to remove the four screws from the heat sink. Figure 71. Removing the screws that secure the heat sink 7. Gently twist the heat sink to free it from the microprocessor and then lift the heat sink off the system board. 8. Lay aside the old heat sink. Touch the static-protective package that contains the new heat sink to any unpainted surface on the outside of the server. Then, remove the new heat sink from the package. Notes: • If you are replacing a heat sink, you need to use a cleaning pad that might come with the new heat sink to wipe the thermal grease from the top of the microprocessor before installing the new heat sink. Dispose of the cleaning pad after all of the thermal grease is removed from the microprocessor. • When handling the heat sink, do not touch the thermal grease on the bottom of it. 9. Remove any protective cover that protects the thermal grease on the bottom of the new heat sink. Then, place the new heat sink on the system board so that the four screws on the new heat sink are aligned with the corresponding mounting studs on the system board. Chapter 6. Installing, removing, or replacing hardware 113 10. Install the four screws to secure the new heat sink on the system board. It is recommended that you carefully install the four screws using the following method to...
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