Lenovo ThinkCentre M55e Hardware Maintenance Manual - Page 103
Replacing the system board, Types 8702, 8706, 8970, 8972, 8980, 8982, 8992, 8994, 9276, 9278, 9286,
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Replacing the system board The procedure to replace the system board varies depending upon the machine type. Types 8702, 8706, 8970, 8972, 8980, 8982, 8992, 8994, 9276, 9278, 9286, 9288, 9378, 9380, 9628, 9632, and 9649 Important The heat sink and microprocessor might be very hot. Make sure these components are cool enough to safely handle before continuing this procedure. Note: When replacing the system board you must also order a new retention module for the new system board. Make sure you have a retention module for the new system board before continuing with this procedure. 1. Remove the cover. See "Removing the cover" on page 87. 2. Lift the fan duct off the heat sink fan. 3. Remove any adapter cards installed in the PCI connectors. 4. Remove the front bezel by releasing the three tabs and pivoting the bezel forward to remove completely. 5. Slide the drive bay assembly forward until the drive bay assembly is aligned with the two slots on the sides of the chassis and remove the drive cables from the system board. Then pull upward on the handle 1 on the drive bay assembly to remove it completely from the computer. Chapter 8. Replacing FRUs (desktop computers) 97