Card reader board
Description Spare part number
Card reader board for use in 4530s models 646292-001
Card reader board for use in 4730s models 646293-001
Before removing the card reader, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet,
and then unplugging the AC adapter from the computer.
4. Remove the battery (see 
Battery on page 47).
5. Remove the following components:
a. Bottom door (see 
Bottom door on page 49).
b. Optical drive (see 
Optical drive on page 50)
c. Keyboard (see 
Keyboard on page 63)
d. Top cover (see 
Top cover on page 65)
Remove the card reader:
1. Position the top cover upside-down with the front toward you.
2. Remove the tape that secures the cable to the Touchpad button board (1).
3. Disconnect the cable from the connector on the Touchpad button board (2).
4. Remove the two Phillips PM2.5×5.0 screws (3) that secure the card reader board to the top
cover.
NOTE: Screw position may vary.
70 Chapter 4   Removal and replacement procedures