HP Pavilion dm1-4300 HP Pavilion dm1 Entertainment PC Maintenance and Service - Page 55
RTC battery, from the system board.
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RTC battery Description For use only with computer models equipped with WWAN compatibility For use only with computer models without WWAN compatibility Spare part number 664994-001 599516-001 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 40). 5. Remove the service door (see WLAN module on page 44). 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 WWAN 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 doublesided tape.) Reverse this procedure to install the RTC battery on a computer model with WWAN capability. NOTE: Step 3 applies to computer models without WWAN capability. See steps 1 and 2 for RTC battery removal information on computer models with WWAN capability. Component replacement procedures 49