Rtc Battery - HP ProBook 6545b Maintenance And Service Manual

Removal and replacement procedures

RTC battery

Description
For use only with HP Compaq 6545b computer models
For use only with HP Compaq 6540b computer models
For use only with HP Compaq 6445b computer models
For use only with HP Compaq 6440b computer models
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
5. Remove the keyboard (see
Remove the RTC battery:
1. Disconnect the RTC battery cable 1 from the system board.
2. Detach the RTC battery 2 from the clip built into the top cover. (The RTC battery is attached to the top cover
with double-sided tape.)
Reverse this procedure to install the RTC battery.
4–32
"Battery" on page 4-7).
"Keyboard" on page 4-25).
Spare part number
583268-001
593860-001
583268-001
593861-001
Maintenance and Service Guide