Acer Aspire 4240 Series, Service Manual

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42 Chapter 3
General Information
Pre-disassembly Instructions
Before proceeding with the disassembly procedure, make sure that you do the following:
1. Turn off the power to the system and all peripherals.
2. Unplug the AC adapter and all power and signal cables from the system.
3. Place the system on a flat, stable surface.
4. Remove the battery pack.
Disassembly Process
The disassembly process is divided into the following stages:
•
External module disassembly
•
Main unit disassembly
•
LCD module disassembly
The flowcharts provided in the succeeding disassembly sections illustrate the entire disassembly sequence.
Observe the order of the sequence to avoid damage to any of the hardware components. For example, if you
want to remove the main board, you must first remove the keyboard, then disassemble the inside assembly
frame in that order.
Main Screw List
Description Quantity Acer P/N
M1.98D 3.0L K 4.6D 0.8T ZK 21 86.PAA02.001
M2.46D 3.0L K 5.5D 0.8T ZK 11 86.PAA02.002
M2.5D 5L K 5.5D ZK NL CR3 21 86.PAA02.003
M2.5D 10.0L K 5.5D ZK NL CR3 12 86.PAA02.004
M3.0D 3.0L K 4.9D NI 4 86.PAA02.006
M2.5D 3.2L K 6D NI 4 86.PAA02.007