Optical drive board
Description Spare part number
Optical drive board
For non-touch models 720246-001
720247-001
729727-001
For touch models 720248-001
720249-001
729728-001
Before removing the optical drive board, 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 33).
5. Remove the service cover (see
Service cover on page 34).
6. Remove the hard drive (see
Hard drive on page 34).
7. Remove the memory modules (see
Memory modules on page 37).
8. Remove the WLAN module (see
WLAN module on page 38).
9. Remove the optical drive (see
Optical drive on page 41).
10. Remove the base enclosure (see
Base enclosure on page 50).
Remove the optical drive board:
Component replacement procedures 55
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