HP 6820s HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 72

Remove the RJ-11 jack, Remove the system board

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4. Remove the battery (see Battery on page 35). 5. Remove the following components: a. Hard drive (see Hard drive on page 36) b. Optical drive (see Optical drive on page 42) c. Switch cover and keyboard (see Switch cover and keyboard on page 45) d. Speaker (see Speaker on page 49) e. Display lid switch module (see Display lid switch module on page 50) f. Display assembly (see Display assembly on page 51) g. Top cover (see Top cover on page 55) When replacing the system board, be sure that the following components are removed from the defective system board and installed on the replacement system board: ● Memory module (see Memory module on page 41) ● WLAN module (see WLAN module on page 38) ● Processor (see Processor on page 69) Remove the system board: 1. Remove the RJ-11 jack (1) from the clip built into the base enclosure and remove the RJ-11 jack cable from the hook (2) built into the base enclosure. 2. Disconnect the fan cable (3) and the Bluetooth module cable (4) from the system board. 62 Chapter 4 Removal and replacement procedures

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4.
Remove the battery (see
Battery
on page
35
).
5.
Remove the following components:
a.
Hard drive (see
Hard drive
on page
36
)
b.
Optical drive (see
Optical drive
on page
42
)
c.
Switch cover and keyboard (see
Switch cover and keyboard
on page
45
)
d.
Speaker (see
Speaker
on page
49
)
e.
Display lid switch module (see
Display lid switch module
on page
50
)
f.
Display assembly (see
Display assembly
on page
51
)
g.
Top cover (see
Top cover
on page
55
)
When replacing the system board, be sure that the following components are removed from the defective
system board and installed on the replacement system board:
●
Memory module (see
Memory module
on page
41
)
●
WLAN module (see
WLAN module
on page
38
)
●
Processor (see
Processor
on page
69
)
Remove the system board:
1.
Remove the RJ-11 jack
(1)
from the clip built into the base enclosure and remove the RJ-11 jack
cable from the hook
(2)
built into the base enclosure.
2.
Disconnect the fan cable
(3)
and the Bluetooth module cable
(4)
from the system board.
62
Chapter 4
Removal and replacement procedures