Acer Aspire 4741 User manual

Aspire 4741 Series
Service Guide
PRINTED IN TAIWAN
Service guide files and updates are available
on the ACER/CSD web; for more information,
please refer to http://csd.acer.com.tw

Chapter 3 27
This chapter contains step-by-step procedures on how to disassemble the notebook computer for
maintenance and troubleshooting.
Disassembly Requirements
To disassemble the computer, you need the following tools:
•Wrist grounding strap and conductive mat for preventing electrostatic discharge
•Flat screwdriver
•Philips screwdriver
•Hex screwdriver
•Plastic flat screwdriver
•Plastic tweezers
NOTE: The screws for the different components vary in size. During the disassembly process, group the
screws with the corresponding components to avoid mismatch when putting back the components.
Chapter 3
Machine Disassembly and Replacement

28 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
Item Screw Color Part No.
A M2.5 x L5 Black 86.00F87.735
B M2 x L3 Black 86.00F80.723
C M3 x L4 Silver 86.9A524.4R0
D M2.5 x L4 Silver 86.00H36.534
E M2.5 x L6 Black 86.00E12.536

Chapter 3 29
External Module Disassembly Process
External Modules Disassembly Flowchart
The flowchart below gives you a graphic representation on the entire disassembly sequence and instructs you
on the components that need to be removed during servicing. 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.
Item Screw Color Part No.
B M2 x L3 Black 86.00F80.723
C M3 x L4 Silver 86.9A524.4R0
E M2.5 x L6 Black 86.00E12.536

30 Chapter 3
Removing the Battery Pack
1. Turn base unit over.
2. Slide the battery lock/unlock latch to the unlock position.
3. Slide the battery release latch to the release position to pop out the battery pack, then remove the battery
pack from the main unit.
Note: Battery has been highlighted with the yellow circle as above image shows. Please detach the
battery and follow the local regulations for disposal.

Chapter 3 31
Removing the SD Dummy Card
1. Push the SD dummy card all the way in to eject it.
2. Pull SD dummy card out from the slot.

32 Chapter 3
Removing the Back Cover
1. See “Removing the Battery Pack” on page 30.
2. See “Removing the SD Dummy Card” on page 31.
3. Remove the four captive screws securing the back cover.
4. Use a flat screwdriver to pry open the back cover and detach it from the lower case.

Chapter 3 33
Removing the DIMM Modules
1. See “Removing the Battery Pack” on page 30.
2. See “Removing the SD Dummy Card” on page 31.
3. See “Removing the Back Cover” on page 32.
4. Push out the latches on both sides of the DIMM socket to release the DIMM modules.
5. Remove the DIMM modules.

34 Chapter 3
Removing the Hard Disk Drive Module
1. See “Removing the Battery Pack” on page 30.
2. See “Removing the SD Dummy Card” on page 31.
3. See “Removing the Back Cover” on page 32.
4. See “Removing the DIMM Modules” on page 33
5. Remove the one screw (B) securing the hard disk drive module.
6. Lift the hard disk drive module and remove it from the hard disk drive bay.
NOTE: To prevent damage to device, avoid pressing down on it or placing heavy objects on top of it.
Size (Quantity) Color Torque Part No.
M2 x L3 (1) Black 1.6 kgf-cm 86.00F80.723

Chapter 3 35
7. Remove the two screws (C) securing the hard disk to the bracket and remove the hard disk from the
bracket.
Size (Quantity) Color Torque Part No.
M3 x L4 (1) Silver 3.0 kgf-cm 86.9A524.4R0

36 Chapter 3
Removing the Wireless WAN Module
1. See “Removing the Battery Pack” on page 30.
2. See “Removing the SD Dummy Card” on page 31.
3. See “Removing the Back Cover” on page 32.
4. See “Removing the DIMM Modules” on page 33.
5. See “Removing the Hard Disk Drive Module” on page 34.
6. Remove the one screw (B) securing the wireless WAN module to the system.
7. Disconnect the blue antenna cable from AUX connector and the yellow antenna cable from Main
connector on the wireless WAN module.
Size (Quantity) Color Torque Part No.
M2 x L3 (1) Black 1.6 kgf-cm 86.00F80.723

Chapter 3 37
8. Remove the wireless WAN module from its connector.
NOTE: When attaching the antenna back to the wireless WAN module, make sure the cable are arranged
properly.
Removing the WLAN Module
1. See “Removing the Battery Pack” on page 30.
2. See “Removing the SD Dummy Card” on page 31.
3. See “Removing the Back Cover” on page 32.
4. See “Removing the DIMM Modules” on page 33.
5. See “Removing the Hard Disk Drive Module” on page 34.
6. See “Removing the Wireless WAN Module” on page 36.
7. Remove the label sticker from the WLAN module.

38 Chapter 3
8. Remove the one screw (B) securing the WLAN module to the system.
9. Disconnect the black antenna cable from MAIN connector and the white antenna cable from AUX
connector on the WLAN module.
Size (Quantity) Color Torque Part No.
M2 x L3 (1) Black 1.6 kgf-cm 86.00F80.723

Chapter 3 39
10. Remove the WLAN module from the WLAN connector.
NOTE: When attaching the antenna back to the WLAN module, make sure the cable are arranged properly.
Removing the Optical Drive Module
1. See “Removing the Battery Pack” on page 30.
2. See “Removing the SD Dummy Card” on page 31.
3. See “Removing the Back Cover” on page 32.
4. See “Removing the DIMM Modules” on page 33.
5. See “Removing the Hard Disk Drive Module” on page 34.
6. See “Removing the Wireless WAN Module” on page 36.
7. See “Removing the WLAN Module” on page 37.
8. Remove the one screw (E) securing the ODD module to the system.
Size (Quantity) Color Torque Part No.
M2.5 x L6 (1) Black 3.0 kgf-cm 86.00E12.536

40 Chapter 3
9. Slowly pull out the ODD module from the ODD drive bay.
10. Remove the one screw (B) securing the ODD bracket to the ODD module.
Size (Quantity) Color Torque Part No.
M2 x L3 (1) Black 1.6 kgf-cm 86.00F80.723

Chapter 3 41
11. Detach the ODD bracket from the optical disk drive module.

42 Chapter 3
Main Unit Disassembly Process
Main Unit Disassembly Flowchart
Screw List
Item Screw Color Part No.
B M2 x L3 Black 86.00F80.723
E M2.5 x L6 Black 86.00E12.536

Chapter 3 43
Removing the Keyboard
1. See “Removing the Battery Pack” on page 30.
2. See “Removing the SD Dummy Card” on page 31.
3. See “Removing the Back Cover” on page 32.
4. See “Removing the DIMM Modules” on page 33.
5. See “Removing the Hard Disk Drive Module” on page 34.
6. See “Removing the Wireless WAN Module” on page 36.
7. See “Removing the WLAN Module” on page 37.
8. See “Removing the Optical Drive Module” on page 39.
9. Release the keyboard from the latches.
10. Turn the keyboard over on the touchpad area.

44 Chapter 3
11. Disconnect the keyboard cable from its connector (KB1) on the main board and detach the keyboard.
Separating the Upper Case from the Lower Case
1. See “Removing the Battery Pack” on page 30.
2. See “Removing the SD Dummy Card” on page 31.
3. See “Removing the Back Cover” on page 32.
4. See “Removing the DIMM Modules” on page 33.
5. See “Removing the Hard Disk Drive Module” on page 34.
6. See “Removing the Wireless WAN Module” on page 36.
7. See “Removing the WLAN Module” on page 37.
8. See “Removing the Optical Drive Module” on page 39.
9. See “Removing the Keyboard” on page 43.
10. Remove the two screws (E) from the upper case.
Size (Quantity) Color Torque Part No.
M2.5 x L6 (2) Black 1.6 kgf-cm 86.00E12.536

Chapter 3 45
11. Detach the power cable from its connector on the main board.
12. Detach the speaker cable from its connector on the main board.
13. Detach the touchpad cable from its connector on the main board.