Removing/Replacing The Top Cover Assembly - Texas Instruments Extensa 660 Series Maintenance Manual

6.5.10 Removing/Replacing the Top Cover Assembly

The procedure for removing and replacing the Top Cover Assembly is as follows:
1. Turn off the computer; disconnect the AC power adapter (if attached), and
remove the battery packs as described in Paragraphs 6.5.1 and 6.5.2.
2. Press the Cover Release Latch and open the notebook to a full 180 degree
position.
3. Remove the Keyboard Assembly as described in Paragraph 6.5.6.
4. Remove the Heat Sink Assembly as described in Paragraph 6.5.7.
5. Remove the Cover-Display Assembly as described in Paragraph 6.5.9.
6. Turn the unit over and remove five recessed screws from the bottom of the
base assembly. Also remove two screws from the primary battery
compartment and two screws from the Hard Disk Drive compartment.
7. Turn the assembly to normal position and unsnap the base cover from the
top cover by pulling gently up along both sides and along the front until the
top cover unsnaps from the base cover assembly.
8. Unplug the cable connectors from the top cover PWB assemblies (LED Board,
Glidepad, and speakers) and remove the top cover assembly.
9. Reassembly is the reverse of Steps 1 through 8. Note: Ensure that the Close
Cover Switch cap is installed before reassembling the Top Cover Assembly.
Figure 6-14 Removing/Replacing the Top Cover Assembly
6-20 Field Service
Keyboard
Assembly
Heat Sink
Assembly
Top Cover
Assembly
Bottom
Case
Assembly