Acer Extensa 4220 TravelMate 4320/4720 and Extensa 4220/4620 Service Guide - Page 82
See Separating the Upper Case from the Lower Case
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9. See "Removing the Keyboard" on page 64. 10. See "Removing the LCD Module" on page 67. 11. See "Separating the Upper Case from the Lower Case" on page 70. 12. Disconnect the touchpad cable from the touchpad board. 13. Disconnect the fingerprint cable from the fingerprint board. 14. Remove the four screws (C) on the touchpad bracket. Step 1~4 Size (Quantity) M2 x L3 (4) 15. Detach the touchpad bracket from the upper case. Color Silver Torque 1.6 kgf-cm 72 Chapter 3