Acer Travelmate 5520g Service Guide

Chapter 4121
Intermittent Problems
Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a 
hardware defect, such as: cosmic radiation, electrostatic discharge, or software errors. FRU replacement 
should be considered only when a recurring problem exists.
When analyzing an intermittent problem, do the following:
1.Run the advanced diagnostic test for the system board in loop mode at least 10 times.
2.If no error is detected, do not replace any FRU.
3.If any...

122Chapter 4
Undetermined Problems
The diagnostic problems does not identify which adapter or device failed, which installed devices are incorrect, 
whether a short circuit is suspected, or whether the system is inoperative.  
Follow these procedures to isolate the failing FRU (do not isolate non-defective FRU).
NOTE: Verify that all attached devices are supported by the computer.
NOTE: Verify that the power supply being used at the time of the failure is operating correctly. (See “Power 
System Check”...

Chapter 5123
Top View
No.DescriptionNo.Description
1 Power Cable Connector  5 Fingerprint/Touchpad 
Connector
2 LCD Cable Connector 6 Bluetooth Connector
3 Touchpad Board Connector 7 Speaker Connector
4 Keyboard Connector
Jumper and Connector Locations
Chapter 5 

124Chapter 5
Bottom View
No.DescriptionNo.Description
1CPU 7USB Connector
2 SATA Connector 8 Card Reader 
3 PC Card Reader 9 Line-out jack
4 LAN Connector 10 Mic-in jack
5 CRT Connector 11 Headphone jack
6 1394 Connector 

Chapter 5125
Standard Operation Procedures of Password Bypassing and BIOS Recovery
Bios/KBC update :
The firmware are combined into one binary file and support both DOS and Windows mode update
- DOS mode
DO make sure you have plugged in the AC adapter to prevent flashing failure.
Before flashing the BIOS, you should unzip the compressed file to one directory.
a.Plug in the AC adapter.
b.Unzip HIC100WW to C: HIC100WW.
c.Boot to pure DOS.
d.It is better not to load HIMEM.sys (bypass CONFIG.sys).
e.To flash...

126Chapter 5
PIN pad Location
The system board provides one hardware Pin pad under the keyboard pad. RD/CSD can enable this function 
by shorting this pad. The  Pin Pad location should look as the figure below. 
1.Clear Password
PIN Pad: Bypassing Password Check
Keep shorting the 2 triangle PIN pad as shown above and then powering on the system will force the BIOS to 
clear Supervisor and User passwords. 
2.Clearing HDD password: 
To decode HDD password error code for unlocking hard disk in a DOS...

Chapter 5127
Enable this function by pressing Fn+ESC, and the Power Button. To use this function, it is strongly 
recommended that the AC adapter is plugged and battery is inserted into the battery slot. If this function is 
enabled, the system will force the BIOS to enter into a special BIOS block, called BootBlock. RD/CSD can use 
this special BIOS code to recover the BIOS to a successful one if previous BIOS flashing process fails. 
However, before doing this, one Crisis Disk should be prepared in...

128Chapter 5 

Chapter 6129
This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of TravelMate 5710/5310 and 
Extensa 5610/5210. 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...

130Chapter 6
TravelMate 5520/5520G/5220/5220G Exploded 
Diagram
TravelMate 5520/5520G/5220/5220G FRU List
CategoryNo.Part Name and DescriptionAcer Part No.
Adapter
ADAPTER 90W DELTA ADP-90SB 
BBDARAP.09001.010
ADAPTER 90W DELTA ADP-90SB 
BBEA LFAP.09001.013
ADAPTER 90W LITEON PA-1900-
04WRAP.09003.005
ADAPTER 90W LITEON PA-1900-
24ARAP.09003.011
Battery-