Rtc Battery - HP 3115m Maintenance And Service Manual

RTC battery

Description
For use only on computer models with WWAN compatibility
For use only on computer models without WWAN compatibility
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 service cover (see
Remove the RTC battery:
NOTE: Steps 1 and 2 apply to computer models with WWAN capability. See step 3 for RTC battery
removal information on computer models without WLAN capability.
1. Disconnect the RTC battery cable (1) from the system board.
2. Remove the RTC battery (2). (The RTC battery is attached to the system board with double-
sided tape.)
Reverse this procedure to install the RTC battery on a computer model with WWAN capability.
NOTE:
RTC battery removal information on computer models with WWAN capability.
Battery on page
Step 3 applies to computer models without WLAN capability. See steps 1 and 2 for
33).
WLAN module on page
Spare part number
664994-001
599516-001
38).
Component replacement procedures 43