HP ProBook 4545s, Руководство по техническому обслуживанию и ремонту

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8. Lift the system board (2) up on its right end and remove it from the computer .
Reverse this procedure to install the system board.
RTC battery
Description Spare part number
RTC battery 683601-001
Before removing the RTC battery, 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 37 ).
5. Remove the following components:
a. Bottom door (see Bottom door on page 38 ).
b. Hard drive (see Hard drive on page 45 ).
c. Optical drive (see Optical drive on page 41 ).
d. Metal heat shield (see Metal heat shield on page 51 ).
e. Fan (see Fan on page 53 ).
f. Heat sink (see Heat sink on page 54 ).
g. Keyboard (see Keyboard on page 47 ).
Component replacement procedures 73