Compaq 400 320 321 420 421 620 and 621 Notebook PC and 420 and 620 Notebook PC - Page 96

that secures the board to the base pan, raise, the end of the board

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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 56). 5. Remove the service door (see Service door on page 56). 6. Remove the keyboard (see Keyboard on page 78). Remove the power switch board: 1. Release the ZIF connector (1) and disconnect the ribbon cable (2) from the system board. 2. Remove the Phillips M2.5×3.0 broadhead screw (1) that secures the board to the base pan, raise the end of the board (2), and then slide the board out of the retainer (3). Reverse this procedure to install the power button board. 88 Chapter 4 Removal and replacement procedures

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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
56
).
5.
Remove the service door (see
Service door
on page
56
).
6.
Remove the keyboard (see
Keyboard
on page
78
).
Remove the power switch board:
1.
Release the ZIF connector
(1)
and disconnect the ribbon cable
(2)
from the system board.
2.
Remove the Phillips M2.5×3.0 broadhead screw
(1)
that secures the board to the base pan, raise
the end of the board
(2)
, and then slide the board out of the retainer
(3)
.
Reverse this procedure to install the power button board.
88
Chapter 4
Removal and replacement procedures