Lenovo ideapad 520H-15IKB Maintenance Manual page 55

Lenovo ideapad 520
Figure 11. Removal steps of system board (continued)
Remove the system board in the direction shown by arrow 4.
Unplug the RTC battery connector in the direction shown by arrow 5.
When installing: Make sure that the connectors are attached firmly.
Remove the RTC battery in the direction shown by arrow 6.
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