Acer Extensa 4220 TravelMate 4320/4720 and Extensa 4220/4620 Service Guide - Page 88
Removing the Modem Board
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15. Turn the mainboard over then disconnect the modem cable from modem board. 16. Disconnect the modem board cable from the mainboard. Removing the Modem Board 1. See "Removing the Battery Pack" on page 51. 2. See "Removing the SD Dummy Card" on page 51. 3. See "Removing the Express Dummy Card" on page 52. 4. See "Removing the Lower Cover" on page 53. 5. See "Removing the Fan Module" on page 60. 6. See "Removing the CPU Heatsink Module" on page 61. 7. See "Removing the CPU" on page 62. 8. See "Removing the Middle Cover" on page 63. 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. See "Remove the Daughter Board" on page 75. 13. See "Removing the Mainboard" on page 77. 78 Chapter 3