HP ProBook 450 G2, Руководство по техническому обслуживанию и ремонту, Страница: 81 / 169

Card reader board
Description Spare part number
Card reader board for use in HP 450 models 768133-001
Card reader board for use in HP 455 models 780894-001
Before removing the card reader board, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
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 36 ).
5. Remove the following components:
a. Service doors (see Service door on page 37 ).
b. Keyboard (see Keyboard on page 49 )
c. Hard drive ( Hard drive on page 39 )
d. Optical drive ( Optical drive on page 43 )
e. Top cover (see Top cover on page 58 )
Remove the card reader board:
NOTE: Before you remove the card reader, make sure nothing (memory card or plastic insert) in installed.
1. Position the top cover upside-down.
2. Disconnect the cable from the board (1).
3. Remove the two Phillips PM2.5×4.0 screws (2) that secure the card reader board to the computer.
Component replacement procedures 69