Lenovo ThinkCentre M70c Hardware Maintenance Manual page 88

Replacement procedure
1. Remove the computer cover. See "Computer cover" on page 56.
2. Remove the front bezel. See "Front bezel" on page 57.
3. Remove the optical drive. See "Optical drive" on page 60.
4. Remove the hard disk drive. See "Hard disk drive" on page 62.
5. Disconnect the card reader cable from the system board.
6. Remove the card reader.
7. Remove the card reader bracket.
8. Install the card reader bracket.
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M70c Hardware Maintenance Manual