Remove the system board:
1.
Disconnect the following cables from the system board:
NOTE:
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Display cable (ZIF) (1)
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Antenna cables from the WLAN module (select products only) (2)
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Display cable from the clips (3)
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Speaker cable (4)
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Keyboard cable (ZIF) (5)
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Card reader cable (ZIF) (6) (select products only)
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Touchpad cable (ZIF) (7)
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Keyboard backlight cable (ZIF) (8) (select products only)
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NFC cable (ZIF) (9) (select products only)
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Fingerprint reader cable (ZIF) (10) (select products only)
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Speaker cable (11)
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Camera cable (ZIF) (12)
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USB board cable (ZIF) (13)
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Antenna cables from the WWAN module (select products only) (14)
2.
Remove the seven Phillips M2.0 × 4.0 screws (1).
3.
Remove the two Phillips M2.0 × 2.0 screws (2).
4.
Remove the Phillips M1.6 × 4.0 screw (3).
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Chapter 6 Removal and replacement procedures for authorized service provider parts
You should never disconnect the RTC battery cable from the system board.