Acer Travelmate 4520 Service Guide

							Chapter 481
Undetermined Problems
Undetermined problems are those for which diagnostic tests cannot identify the cause. This may be a failure to 
detemine which adapter or device failed, which installed device is malfunctioning, a short circuit is suspected, 
or when the system is inoperative.  
IMPORTANT: Verify that all attached devices are supported by the computer, and that power supply to the 
computer is good.
Follow these procedures to isolate the failing FRU (do not isolate non-defective FRU).
1.Shut down the computer.
2.Visually check the failing FRU for damage. If any problems are found, replace the FRU.
3.Remove or disconnect all the following devices:
t     Non-Acer devices
t     Printer, mouse, and other external devices
t     Battery pack
t     Hard disk drive
t     DIMM 
t     Optical drive/diskette drive
t     Cards in the ExpressCard/54 and card reader slots
4.Power on the computer.
5.Determine if the problem has changed.
6.If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.
7.If the problem remains, replace the following FRU one at a time. Do not replace a non-defective FRU:
t     System board
t     LCD module assembly
Acer TM 4520 SG.book  Page 81  Friday, June 22, 2007  5:43 PM 
						

							82Chapter 4
Online Support Information
This section describes online technical support services available to help you repair your TravelMate 
notebook.
If you are a distributor, dealer, ASP or TPM, please refer your technical queries to your local Acer branch 
office. Acer Branch Offices and Regional Business Units may access our website at http://global.acer.com/
support/index. However some information sources will require a user ID and password. These can be obtained 
directly from Acer CSD Taiwan.
Acers Website offers you convenient and valuable support resources whenever you need them.
In the Support & Downloads
 tab you can download information materials for all of Acer notebook, desktop and 
server models including:
TService guides for all models
TUsers manuals
TTraining materials
TBIOS updates
TSoftware utilities
TSpare parts lists
TTechnical Announcement Bulletins (TABs)
For these purposes, we have included an Acrobat File to facilitate a hassle-free downloading of our technical 
materials.
 The following are also available in the Support & Downloads
 tab: 
TDetailed information on Acers International Travelers Warranty (ITW) 
TReturned material authorization procedures 
TAn overview of all the support services we offer, accompanied by a list of telephone, fax, and email 
contacts for all your technical queries.
We are always looking for ways to optimize and improve our services, so if you have any suggestions or 
comments, please do not hesitate to communicate these to us.
Acer TM 4520 SG.book  Page 82  Friday, June 22, 2007  5:43 PM 
						

							Chapter 583
System Block Diagram 
System Block Diagram and Board Layout
Chapter 5
Acer TM 4520 SG.book  Page 83  Friday, June 22, 2007  5:43 PM 
						

							84Chapter 5
System Board Layout
This section shows the top and bottom layout of the TravelMate 4520 system board. 
Top View  
ItemCodeDescription
1 LCD1 LCD-CCD cable connector
2 LID1 Notebook lid connector
3 CN1 PC card slot
4U40???
5 RTC1 CMOS battery (RTC battery)
6 CRB1 Card reader board connector
7 SPKR1 Speaker cable connector
8 BLUE1 Bluetooth board cable connector
9 FP1 Fingerprint board cable connector
10 TPAD1 Touchpad board cable connector
11 INTMIC1 Internal microphone cable connector
12 LEDB1 LED board cable connector
13 KB1 Keyboard cable connector
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							Chapter 585
Bottom View
ItemCodeDescription
1 MDC1 Modem board connector
2 BAT1 Battery pack connector
3 ODD1 Optical drive connector
4 DMI soDIMM slots
5 U57 ATI M690G chipset
6 MINIC1 WLAN board slot
7U72???
8 SATA1 Hard drive connector
9 U52 Processor socket
10 U53???
11 FAN1 Fan cable connector
Acer TM 4520 SG.book  Page 85  Friday, June 22, 2007  5:43 PM 
						

							86Chapter 5
System Switch
If you have enabled the Password on Boot field and you forget the supervisor password, you will not be able to 
boot up the computer. Your TravelMate notebook has a hardware pin (G41) for clearing a lost supervisor 
password. Go to page 20 for related instructions. 
Acer TM 4520 SG.book  Page 86  Friday, June 22, 2007  5:43 PM 
						

							Chapter 687
This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of Aspire 5910. Refer to this chapter 
whenever ordering for parts to repair or for RMA (Return Merchandise Authorization).
Please note that WHEN ORDERING FRU PARTS, you should check the most up-to-date information available on your 
regional web or channel. For whatever reasons a part number change is made, it will not be noted on the printed Service 
Guide.  For ACER AUTHORIZED SERVICE PROVIDERS, your Acer office may have a DIFFERENT part number code from 
those given in the FRU list of this printed Service Guide. You MUST use the local FRU list provided by your regional Acer 
office to order FRU parts for repair and service of customer machines.
NOTE: To scrap or to return the defective parts, you should follow the local government ordinance or regulations on how to 
dispose it properly, or follow the rules set by your regional Acer office on how to return it.

FRU (Field Replaceable Unit) List
Chapter 6
Acer TM 4520 SG.book  Page 87  Friday, June 22, 2007  5:43 PM 
						

							88Chapter 6
Aspire 5910 Exploded Diagram 
Acer TM 4520 SG.book  Page 88  Friday, June 22, 2007  5:43 PM 
						

							Chapter 689
TravelMate 4520 FRU List
CategoryNo.Part Name and DescriptionAcer Part No.
Audio-related 
 
Boards
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							90Chapter 6
Cables
CategoryNo.Part Name and DescriptionAcer Part No.
Acer TM 4520 SG.book  Page 90  Friday, June 22, 2007  5:43 PM