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4.
Disconnect the cable from the USB board ZIF connector (5).
5.
Remove the USB board (6) from the computer.
To install the USB board, reverse this procedure.
Heat sink
To remove the heat sink, use these procedures and illustrations.
Table 6-9
Heat sink descriptions and part numbers
Description
15 W models
28 W models
Before removing the heat sink, follow these steps:
1.
Prepare the computer for disassembly (see
2.
Remove the bottom cover (see
3.
Disconnect the battery cable from the system board (see
(UMA models) Remove the heat sink:
1.
Peel the tape (1) off the heat sink.
2.
In the order indicated on the heat sink, loosen the four captive Phillips screws (2) that secure the
heat sink to the computer.
3.
Remove the heat sink (3) from the computer.
56
Chapter 6 Removal and replacement procedures for authorized service provider parts
Preparation for disassembly on page
Bottom cover on page
37).
Spare part number
N07344-001
N07345-001
Battery on page
48).
37).
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