Acer Travelmate 520 Service Guide

							Chapter 475
Battery can’t be charged Power System Check 
Battery pack
System board
PCMCIA-Related Symptoms
Symptom / ErrorAction in Sequence
System cannot detect the PC Card (PCMCIA)  PCMCIA slot assembly
System board
PCMCIA slot pin is damaged. PCMCIA slot assembly
Memory-Related Symptoms
Symptom / ErrorAction in Sequence
Memory count (size) appears different from actual size. Enter BIOS Setup Utility to execute “Load Default 
Settings, then reboot system.
DIMM
System board
Speaker-Related Symptoms
Symptom / ErrorAction in Sequence
In DOS or Windows, multimedia programs, no sound 
comes from the computer. Press Fn-F8, Speaker ON/OFF control.
Audio driver
Speaker
Audio board
System board
Internal speakers make noise or emit no sound. Press Fn-F8, Speaker ON/OFF control.
Speaker
Audio board
System board
Power Management-Related Symptoms
Symptom / ErrorAction in Sequence
The system will not enter hibernation Keyboard (if control is from the keyboard)
Hard disk drive
System board
Check with Sleep Manager.
The system doesnt enter hibernation mode and four 
short beeps every minute.Hibernation Mode
Press Fn+F4 and see if the computer enters 
hibernation mode.
Touchpad
Keyboard
Hard disk connection board
Hard disk drive
System board
The system doesn’t enter standby mode after closing 
the LCDStandby Mode
LCD cover switch
System board
The system doesnt resume from hibernation mode. Hibernation Mode
Hard disk connection board
Hard disk drive
System board
Power-Related Symptoms
Symptom / ErrorAction in Sequence 
						

							76Chapter 4
The system doesnt resume from standby mode after 
opening the LCD.Standby Mode
LCD cover switch
System board
Battery fuel gauge in Windows doesn’t go higher than 
90%. Remove battery pack and let it cool for 2 hours.
Refresh battery (continue to use battery until power off, 
then charge battery).
Battery pack
Charger board
System board
System hangs intermittently. Set Thermal Sensor Threshold. 
Reconnect hard disk/CD-ROM drives. 
Hard disk connection board
System board
Peripheral-Related Symptoms
Symptom / ErrorAction in Sequence
System configuration does not match the installed 
devices. Enter BIOS Setup Utility to execute “Load Default 
Settings”, then reboot system.
Reconnect hard disk/CD-ROM/diskette drives.
External display does not work correctly. Press Fn+F5, LCD/CRT/Both display switching
Running PQA Diagnostics Program. 
System board
USB does not work correctly. System Diagnostics Diskette
System board
Print problems. Ensure that the “Parallel Port” in the “Onboard Devices 
Configuration” of BIOS Setup Utility is set to Enabled.
Onboard Devices Configuration
Run printer self-test.
Printer driver
Printer cable
Printer
System Board
Serial or parallel port device problems. Ensure that the “Serial Port” in the “Onboard Devices 
Configuration” of BIOS Setup Utility is set to Enabled.
Device driver
Device cable
Device
System board
Keyboard/Touchpad-Related Symptoms
Symptom / ErrorAction in Sequence
Keyboard (one or more keys) does not work. Reconnect the keyboard cable.
Keyboard
System board
Touchpad does not work. Reconnect touchpad cable.
Touchpad board
System board
Power Management-Related Symptoms
Symptom / ErrorAction in Sequence 
						

							Chapter 477
NOTE: If you cannot find a symptom or an error in this list and the problem remains, see “Undetermined 
Problems” on page 79. Modem-Related Symptoms
Symptom / ErrorAction in Sequence
Internal modem does not work correctly. System Diagnostics Diskette
Modem phone jack
Modem board
System board 
						

							78Chapter 4
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 error is detected, replace the FRU.  Rerun the test to verify that there are no more errors.  
						

							Chapter 479
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. 
1.
Power-off the computer.
2.
Visually check them for damage.  If any problems are found, replace the FRU.
3.
Remove or disconnect all of the following devices:
TNon-Acer devices
TDevices attached to the port replicator
TPrinter, mouse, and other external devices
TBattery pack
THard disk drive
TDIMM 
TCD-ROM
TDiskette drive
TPC Cards
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:
TSystem board
TLCD assembly 
						

							80Chapter 4
Index of AFlash BIOS Error Message
Error MessageAction in Sequence
Hardware Error  See “System Diagnostic Diskette” on page 40
BIOS Update Program Error Turn off the power and restart the system.
System Error Make sure this AFlash BIOS diskette for this model.
Without AC adapter make sure to connect AC adapter
Battery Low make sure to install a highly charged battery, and reboot 
system. 
						

							Chapter 481
Index of PQA Diagnostic Error Code, Message
Error CodeMessageAction in Sequence
16XXX Backup battery error Backup battery
01XXX CPU or main board error Reload BIOS default setting.
System board
02XXX Memory error DIMM
System board
03XXX Keyboard error Reset Keyboard
Keyboard
System board
04XXX Video error System board
05XXX Parallel Port error System board
06XXX Serial port or main board error System board
07XXX Diskette drive error Diskette drive
System board
08XXX Hard disk error Reload BIOS default setting
Hard disk
System board
09XXX CD-ROM error Reset CD-ROM cable
CD-ROM drive
System board
10XXX Co-processor error System board
11XXX Pointing device error Reset Keyboard
Keyboard
System board
12XXX Cache test error System board 
						

							82Chapter 4 
						

							Chapter 583
To p  Vi e w
PCB No. 99206
CN1 PS/2 keyboard and Mouse Port CN12 CD-ROM Connector
CN2 External Display Port CN13 PCMCIA Socket Connector
CN3 Parallel Port CN16 Touch Pad Cable Connector
CN4 Serial Port CN18 Hdd Connector
CN5 USB Port 1 CNX1 Diskette Drive Connector
CN6 USB Port 2 CNX2 Keyboard Cable Connector
CN7 Expansion Port CNX3 Digital finger Print Sensor Connector 
(For castor only)
CN8 LED & Inverter Connector CNX4 TV BD Connector
CN9 LCD Connector JK1 Modem / Lan Port
CN10 Cover Switch JK2 DC-in Port
CN11 Launch Key Connector SW1 Switch
Keyboard Switch Settings
SW-1SW-2SW-3
English OFF OFF Reserved
Japanese ON OFF Reserved
UK OFF ON Reserved
English-International OFF OFF Reserved
Jumper and Connector Locations
Chapter  5 
						

							84Chapter 5
SW-6: Check Password
SW6 = OFF, Enable
SW-6 = ON, Disable
SW-7: Boot Block Boot
SW-7 = OFF, Disable
SW-7 = On, Enable SW-4/5
SW-4SW-5
Acer OFF OFF