3. Remove the ngerprint reader board from the computer (4).
Reverse this procedure to install the ngerprint reader board.
RTC battery
To remove the RTC battery, use this procedure and illustration.
Table
6-5 RTC battery description and part number
Description Spare part number
RTC battery M21797-001
Before removing the RTC battery, follow these steps:
1. Prepare the computer for disassembly (Preparation for disassembly on page 30).
2. Remove the bottom cover (Bottom cover on page 30).
3. Remove the battery (see Battery on page 38).
Remove the RTC battery:
1. Disconnect the battery cable from the system board (1).
44 Chapter 6 Removal and replacement procedures for authorized service provider parts
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