Acer Travelmate 250 Service Guide

							Chapter 4102
Error Message List
No beep Error MessagesFRU/Action in Sequence
No beep, power-on indicator turns off and LCD is 
blank.Power source (battery pack and power adapter). See “Power 
System Check” on page 96. 
Ensure every connector is connected tightly and correctly. 
Reconnect the DIMM.
LED board.
System board.
No beep, power-on indicator turns on and LCD is 
blank.Power source (battery pack and power adapter). See “Power 
System Check” on page 96. 
Reconnect the LCD connector
Hard disk drive
LCD inverter ID
LCD cable
LCD Inverter
LCD
System board
No beep, power-on indicator turns on and LCD is 
blank. But you can see POST on an external 
CRT. Reconnect the LCD connectors.
LCD inverter ID
LCD cable 
LCD inverter
LCD
System board
No beep, power-on indicator turns on and a 
blinking cursor shown on LCD during POST.Ensure every connector is connected tightly and correctly.
System board
No beep during POST but system runs correctly. Speaker
System board 
						

							103TravelMate 240/ 250
Index of Symptom-to-FRU Error Message
LCD-Related Symptoms
Symptom / ErrorAction in Sequence
LCD backlight doesnt work
LCD is too dark
LCD brightness cannot be adjusted
LCD contrast cannot be adjustedEnter BIOS Utility to execute “Load Setup Default Settings”, then 
reboot system.
Reconnect the LCD connectors.
Keyboard (if contrast and brightness function key doesnt work).
LCD inverter ID
LCD cable
LCD inverter
LCD
System board
Unreadable LCD screen 
Missing pels in characters
Abnormal screen 
Wrong color displayedReconnect the LCD connector
LCD inverter ID
LCD cable
LCD inverter
LCD
System board
LCD has extra horizontal or vertical lines 
displayed.LCD inverter ID
LCD inverter
LCD cable
LCD
System board
Indicator-Related Symptoms
Symptom / ErrorAction in Sequence
Indicator incorrectly remains off or on, but system 
runs correctlyReconnect the inverter board
Inverter board
System 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 96. 
Battery pack
Power adapter
Hard drive & battery connection board
System board
The system doesn’t power-on. Power source (battery pack and power adapter). See “Power 
System Check” on page 96. 
Battery pack
Power adapter
Hard drive & battery connection board
System board
The system doesn’t power-off. Power source (battery pack and power adapter). See “Power 
System Check” on page 96. 
Hold and press the power switch for more than 4 seconds.  
System board
Battery can’t be charged See “Check the Battery Pack” on page 98. 
Battery pack
System board 
						

							Chapter 4104
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 Windows, multimedia programs, no sound 
comes from the computer. Audio driver
Speaker
System board
Internal speakers make noise or emit no sound. Speaker
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
The system doesnt enter hibernation mode and 
four short beeps every minute.See “Hibernation Mode” on page 29.
Press Fn+
oand 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 LCDSee “Hibernation Mode” on page 29.
LCD cover switch
System board
The system doesnt resume from hibernation 
mode.See “Hibernation Mode” on page 29.
Hard disk connection board
Hard disk drive
System board
The system doesnt resume from standby mode 
after opening the LCD.See “Hibernation Mode” on page 29.
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 use battery until power off, then charge 
battery).
Battery pack
System board 
						

							105TravelMate 240/ 250
NOTE: If you cannot find a symptom or an error in this list and the problem remains, see “Undetermined 
Problems” on page 107.
System hangs intermittently. 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
System board
USB does not work correctly System board
Print problems. Ensure 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 the “Serial Port” in the 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
Modem-Related Symptoms
Symptom / ErrorAction in Sequence
Internal modem does not work correctly. Modem phone port
modem combo board
System board
Power Management-Related Symptoms
Symptom / ErrorAction in Sequence 
						

							Chapter 4106
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.  
						

							107TravelMate 240/ 250
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 96):
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 
TCD-ROM/Diskette drive Module
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 5108
Top View
123
45
67 8 9
10
11
12
13
14
15 16
17 18 19
20 21 22 23
24
25
Jumper and Connector Locations
Chapter  5 
						

							109TravelMate 240/ 250
1 U12 CPU Socket 14 LIN1 Line-in Port
2 FAN1 Fan Connector 15 LOUT1 Line-out Port
3 SW1 SW1 16 RJ1 RJ45+RJ11
4 TPAD1 Touchpad Cable Connector 17 USB1-4 Four USB Ports
5 HDD1 HDD Connector 18 CRT1 VGA Port
6 KB1 Keyboard Connector 19 LCD1 LCD Coaxial Cable Connector
7 SPK1 Speaker Cable Connector  20 MINI1 Mini PCI Connector
8 IDE1 Optical Drive Connector 21 RTC1 RTC Battery Connector
9 U23 South Bridge 22 U15 North Bridge
10 FDD1 FDD Connector 23 PRT1 Parallel Port
11 CN1 Launch Cable Connector 24 DCIN1 DC-in Port
12 CBUS1,2 PCMCIA Slot 25 CVR1 LCD Lid Switch
13 INV1 LCD Inverter Cable Connector 
						

							Chapter 511 0
Bottom View
1 U7 FIR Port
2 RING1 Modem Cable Connector
3 MDC1 Modem Card Connector
4 DM1 DIMM Socket 1
5 DM2 DIMM Socket 2
SW1 Settings
1234
Password 
EnableON X X X
Password 
DisableOFF X X X
Bootblock 
EnableXONXX
Bootblock 
DisableXOFFXX
Adapter 90W X X ON X
Adapter 120W X X OFF X 
						

							111TravelMate 240/ 250