Lenovo ThinkCentre 7515 Hardware Maintenance Manual

Also see for 7515L2U: Brochure & specs

Contents

What to do next:v To work with another piece of hardware, go to the appropriate section.v To complete the replacement, go to “Completing the FRU replacement” onpage 120.Replacing the system boardAttentionDo not open your computer or attempt any repair before reading and understanding the“Important safety information” in the ThinkCentre Safety and Warranty Guide that came withyour computer. To obtain a copy of the ThinkCentre Safety and Warranty Guide, go to:http://www.lenovo.com/supportThis section provides instructions on how to replace the system board.CAUTION:The heat sink and microprocessor might be very hot. Turn off the computer andwait three to five minutes to let the computer cool before removing thecomputer cover.Note: When replacing the system board, you must order a new retention modulefor the new system board. Make sure you have a retention module for thenew system board before continuing this procedure.To replace the system board, do the following:1. Remove the computer cover. See “Removing the computer cover” on page 86.2. Remove the primary hard disk drive with the hard disk drive cage. See“Replacing the primary hard disk drive” on page 105.3. Lay the computer on its side to make the system board more accessible.4. Remove all memory modules and adapter cards that are currently installed.See “Installing or replacing a memory module” on page 90 and “Installing orreplacing a PCI card” on page 92.5. Carefully take note of the location of all cable connectors on the system boardand disconnect all the cables. See “Locating parts on the system board” onpage 89.6. Remove the heat sink and fan assembly from the failing system board. See“Replacing the heat sink and fan assembly” on page 98.7. Remove the screws that secure the system board to the chassis.8. Carefully move the system board out of the chassis.9. Remove the microprocessor socket cover from the new system board.10. Remove the microprocessor from the failing system board and install it on thenew system board. See “Replacing the microprocessor” on page 100.11. The failing system board must be returned with a microprocessor socket coverto protect the pins during shipping and handling. Install the microprocessorsocket cover removed from the new system board on the failing system board.Chapter 8. Replacing FRUs - Tamdhu 103