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44 R
EMOVAL
& R
EPLACEMENT
P
RESARIO
N
OTEBOOK
M
AINTENANCE
AND
S
ERVICE
G
UIDE
1800 S
ERIES
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Voltage Converter Board
To remove the voltage converter board, complete the following steps:
1. Prepare the Notebook for disassembly (pg 10
).
2. Remove the Palmrest cover with TouchPad (pg 13
).
3. Remove the keyboard (pg 16
).
4. Remove the heat sink (pg 23
).
5. Remove the button board cover (pg 17
).
6. Remove the Internet switch board (pg 21
).
7. Remove the display panel assembly (pg 34
).
8. Remove the hard drive (pg 25
).
9. Remove the upper CPU cover (pg 37
).
10. Remove the two screws (shown below) securing the voltage converter board.
11. Lift the voltage converter board off the connector on the system board.
Note: Retain the plastic insulator for reassembly with the replacement board.
To replace the voltage converter board, reverse these procedures.
Note: When replacing the voltage converter board, ensure that the pins are aligned with
the connector on the system board.