RTC battery
Table 6-12 RTC battery description and part number
Description Spare part number
RTC battery L23943-001
Before removing the RTC battery, follow these steps:
1. Prepare the computer for disassembly (Preparation for disassembly on page 34).
2. Remove the following components:
a. Bottom cover (see Bottom cover on page 35)
b. Battery (see Battery on page 36)
c. Optical drive (see Optical drive on page 39)
d. Hard drive (see Hard drive on page 40)
e. Solid-state drive or Optane memory module (see Solid-state drive on page 42)
f. WWAN module and bracket (see WWAN module on page 43)
g. Keyboard (see Keyboard on page 47)
h. Internal frame (see Internal frame on page 51)
To remove the RTC battery:
▲ Disconnect the RTC battery cable from the system board (1), and then lift to release the RTC battery
from the system board (2).
Reverse this procedure to install the RTC battery.
Component replacement procedures 65
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