Acer Travelmate 720 Service Guide

Chapter 3 63
4.  Lift the keyboard up and outward to expose the keyboard connector at 
CN20.
.
5.  Remove the keyboard by carefully releasing the connector.
6.  In reassembling the keyboard, be sure that the latches are lined up as 
indicated blew.
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64 Removal and Replacement
7.  To replace the middle cover, be sure that the latches are lined up with the 
upper case as indicated below.
8.  Press the middle cover to lock it in place.
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Chapter 3 65
Removing the LCD
1.  Disconnect the internal microphone cable at CN4 from the system board.
2.  Remove the LED cable at CN8 from the system board.
3.  Remove the two screws of the LCD FPC cable at CN2 from the LVDS 
board.
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66 Removal and Replacement
4.  Remove the LCD FPC cable cover from the system board.
5.  Disconnect the LCD FPC cable from the LVDS board.
6.  Use two flatbladed screwdrivers to remove the LVDS board at CN13 from 
the system board.
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Chapter 3 67
7.  Remove the two screws at the base and at the back of the lower case.
.
8.  Carefully, detach the LCD module from the main unit.
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68 Removal and Replacement
Removing the CPU
1.  To remove the CPU board, first remove the five screws of the CPU heat 
sink.
2.  Lift the heat sink away.
3.  Use this special tool placing it under the CPU board and aligning it with the 
white line, then lift up the CPU board to bring it out from the system board.
4.  To reinsert the CPU board, first insert the upper heat sink back into the 
upper case.
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Chapter 3 69
5.  Reinsert the CPU board at CN17 of the system board by aligning the CPU 
board with the two pillars of the MMO shield as shown below.
6.  Use this special tool to press down and completely connect the CPU 
board to its socket. 
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70 Removal and Replacement
Disassembling the Upper Case
1.  To detach the upper case, first remove the two screws from the upper heat 
sink then lift the upper heat sink up and out.
2.  Remove the floppy cable at CN18 from the system board.
3.  Remove the mouse cable at CN19 from the system board.
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Chapter 3 71
4.  Remove the 11 screws from the upper case and the base of the unit.
5.  Disconnect the suspend cable at CN9, the left channel speaker at CN10 
and the right channel speaker at CN11.
6.  Remove the upper case from the lower case.
7.  To reinsert the upper case into the lower case, be sure that the latches on 
the lower case are aligned to the latches on the upper case.
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72 Removal and Replacement
Removing the Speakers
1.  Remove the two screws of the right channel speaker, then lift it away.
2.  To remove the right channel speaker from the upper case, release its 
cable from the latches.
3.  Remove the two screws from the left channel speaker, then lift it away.
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