2. Remove the bottom cover (see Bottom cover on page 41).
3. Remove the battery (see Battery on page 51).
Remove the smart card reader:
1. Remove the four Phillips M2.0 × 2.0 screws (1) from the metal bracket covering the card reader board.
2. Disconnect the cable from the card reader (2).
3. Lift the smart card reader straight up to remove it (3).
Reverse this procedure to install the smart card reader.
Fan
To remove the fan, use this procedure and illustration.
Table 6-7
Fan description and part number
Description Spare part number
Fan for use in 42 W, UMA models M21718-001
Fan for use in models with discrete graphics M21719-001
Fan for use in 51 W, UMA models N00095-001
Before removing the fan, follow these steps:
1. Prepare the computer for disassembly (see Preparation for disassembly on page 41).
2. Remove the bottom cover (see Bottom cover on page 41).
3. Disconnect the battery cable from the system board (see Battery on page 51).
Remove the fan assembly:
Fan
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