Acer Aspire 5620 Service Guide

							104Chapter 4
Index of Symptom-to-FRU Error Message
LCD-Related Symptoms
Symptom / ErrorAction in Sequence
LCD backlight doesnt work First, plug a monitor to CRT port. Next, enter BIOS utility to running 
“Load Default Settings” then reboot the system.
Reconnect the LCD connectors.
Keyboard (if the brightness function key doesnt work).
LCD cable
LCD inverter
LCD
Main board
LCD is too dark
LCD brightness cannot be adjustedEnter BIOS Utility to execute “Load Setup Default Settings”, then 
reboot system.
Reconnect the LCD connectors.
Keyboard (if the brightness function key doesnt work).
LCD cable
LCD inverter
LCD
Main board
Unreadable LCD screen 
Missing pels in characters
Abnormal screen 
Wrong color displayed
LCD has extra horizontal or vertical lines 
displayed.Reconnect the LCD cable
LCD cable
LCD
Main board
Indicator-Related Symptoms
Symptom / ErrorAction in Sequence
Indicator incorrectly remains off or on, but system 
runs correctlyMain board
HDD/CD-ROM active indicators cannot work HDD/CD-ROM drive
Device driver
Main board
Power-Related Symptoms
Symptom / ErrorAction in Sequence
Power shuts down during operation Power source (battery pack and power adapter). See “Power 
System Check” on page 95. 
Battery pack
AC adapter
See if the thermal module is overheat (Heat sink or fan).
Main board
The system cannot power-on. Power source (battery pack and power adapter). See “Power 
System Check” on page 95.
Battery pack
Power adapter
CPU
Main board
The system cannot power-off. In Windows XP operating system, hold and press the power switch 
for more than 4 seconds. If the system can power off, then the main 
board is OK. Verify OS in the HDD. 
Main board 
						

							Chapter 4105
Battery can’t be charged or discharged See “Check the Battery Pack” on page 96. 
Battery pack
Main board
System hang during POST ODD/HDD/FDD/RAM module
Main board
PCMCIA-Related Symptoms
Symptom / ErrorAction in Sequence
System cannot detect the PC Card (PCMCIA)  PCMCIA slot assembly
Main board
PCMCIA slot pin is damaged. PCMCIA slot assembly
PC Card cannot be inserted or ejected Check if the PCMCIA slot is blocked
Main board
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.
RAM module
Main board
Check BIOS revision
System can power on, but you hear two long 
beeps: “B--, B--” and the LCD is blank.Reinsert DIMM
DIMM
Main board
Speaker-Related Symptoms
Symptom / ErrorAction in Sequence
In Windows, multimedia programs, no sound 
comes from the computer. OS volume control
Audio driver
Speaker
Main board
Internal speakers make noise or emit no sound. Speaker
Main board
Microphone cannot work Audio driver
Volume control in Windows XP
Main board
Power Management-Related Symptoms
Symptom / ErrorAction in Sequence
The system will not enter hibernation mode Power option in Windows XP
Hard disk drive
Main board
The system doesn’t enter standby mode after 
closing the lid of the portable computer.Driver of Power Option Properties
Lid close switch in upper case
Main board
Power-Related Symptoms
Symptom / ErrorAction in Sequence 
						

							106Chapter 4
The system doesnt resume from hibernation/ 
standby mode.Connect AC adapter then check if the system resumes from 
Standby/Hibernation mode. 
Check if the battery is low.
Hard disk drive
Main board
The system doesnt resume from standby mode 
after opening the lid of the portable computer.LCD cover switch
Main board
Battery fuel gauge in Windows doesn’t go higher 
than 90%. Refresh battery (continue use battery until power off, then charge 
battery).
Battery pack
Main board
System hangs intermittently. Reconnect hard disk/CD-ROM drives. 
Main board
Peripheral-Related Symptoms
Symptom / ErrorAction in Sequence
System configuration does not match the 
installed devices. Enter BIOS Setup Utility to execute “Load Setup defaults”, then 
reboot system.
Reconnect hard disk/CD-ROM drives/FDD or other peripherals.
Main board
External display does not work correctly. Press Fn+F5, LCD/CRT/Both display switching
Keyboard
Main board
USB does not work correctly Main board
Print problems. Enter BIOS Setup Utility to execute “Load Default Settings” then 
reboot the system.
Run printer self-test.
Printer driver
Printer cable
Printer
Main board
Parallel port device problems Enter BIOS Setup Utility to execute “Load Default Settings” then 
reboot the system.
Device driver
Device cable
Device
Main board
Keyboard/Touchpad-Related Symptoms
Symptom / ErrorAction in Sequence
Keyboard (one or more keys) does not work. Reconnect the keyboard cable.
Keyboard
Main board
Touchpad does not work. Reconnect touchpad cable.
Touchpad board
Main board
Power Management-Related Symptoms
Symptom / ErrorAction in Sequence 
						

							Chapter 4107
NOTE: If you cannot find a symptom or an error in this list and the problem remains, see “Undetermined 
Problems” on page 109. Modem/LAN-Related Symptoms
Symptom / ErrorAction in Sequence
Internal modem does not work correctly. Phone cable
Driver
Reconnect the Internal modem cable to the main board tightly.
Main board
Internal LAN does not work correctly Lan cable
Driver
Main board 
						

							108Chapter 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 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 4109
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” on page 95):
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
TPrinter, mouse, and other external devices
TBattery pack
THard disk drive
TDIMM 
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 
						

							Chapter 511 0
Top View
ItemDescriptionItemDescription
CN18 RJ45 connector CN19 DVI connector
CN20 Docking connector PJ4 DC wire connector
DO29DO2:DO31
QK5
DO32
DO34
DO35
DO36
DO3:
V45
DO43
DO45
DO52
DO47
DO48
DO28
DO53
DO44
DO41
DO39
DO35
DO37
DO33
V55
V45
V41
V44
V44
V54
V5:
TX:TX21
DO49
V35
Jumper and Connector Locations
Chapter 5 
						

							111Chapter 5
CN21 Mini card connector CN23 Main battery connector
CN24 ODD fix connector CN25 ODD media connector
CN29 Sub-battery/HDD connector CN27 Mini PCI connector
CN32 CIR wire connector CN34 Bluetooth wire connector
CN41 PATA HDD connector CN41 SATA HDD connector
CN36 DDR connector CN37 DDR connector
CN39 2nd fan connector CN42 Mini 1394 connector
CN38 PCMCIA connector CN33 USB connector
CN30 USB connector CN28 S-Video connector
CN26 Main fan connector CN24 CPU socket
CN22 CRT connector U44 CPU
U34 VGA U30 VGA RAM
U33 VGA RAM U34 LAN chip
U49 South bridge U43 North bridge
U24 LAN transformer SW9 Wireless switch connector
SW10 Bluetooth switch connector
ItemDescriptionItemDescription 
						

							Chapter 511 2
Bottom View
 
ItemDescriptionItemDescription
CN5 LID wire connector CN6 LCD wire connector
CN7 CCD wire connector CN29 Express card connector
CN15 3 in 1 connector CN13 USB FFC connector
CN12 MDC connector CN10 Touchpad board FFC connector
CN9 MIC wire connector CN8 Keyboard connector
U6 VGA RAM U10 VGA RAM
U9 EC U7 BIOS ROM
SW6 Quick switch SW7 Quick switch
SW8 IE switch SW4 E-mail switch
SW5 Power switch
DO6DO7
DO8
DO3:
DO26
DO24
DO23
DO21
DO:DO9
TX7TX8TX9TX5
TX6
V7
V21
V:V8 
						

							Chapter 611 3
This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of Aspire 5670
 Refer to this chapter whenever ordering for parts to repair or for RMA (Return Merchandise Authorization).
 Please also note that there are some common parts for Aspire 5620, TravelMate 4210/4270/4670
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.
NOTE: Please 
visit  website http://aicsl.acer.com.tw/spl/ for the up to date SPL
FRU (Field Replaceable Unit) List
Chapter 6