Acer Travelmate 740 Service Guide

							Chapter 473
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 67. 
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 67. 
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 
						

							74Chapter 4
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 67. 
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 67. 
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 67. 
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 69. 
Battery pack
System board 
						

							Chapter 475
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 24.
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 LCDSee “Hibernation Mode” on page 24.
LCD cover switch
System board
The system doesnt resume from hibernation 
mode.See “Hibernation Mode” on page 24.
Hard disk connection board
Hard disk drive
System board
The system doesnt resume from standby mode 
after opening the LCD.See “Standby Mode” on page 24.
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 
						

							76Chapter 4
NOTE: If you cannot find a symptom or an error in this list and the problem remains, see “Undetermined 
Problems” on page 78.
System hangs intermittently. See “Thermal & Fan Utility” on page 38. 
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
See “System Diagnostic Diskette” on page 38. 
System board
USB does not work correctly See “System Diagnostic Diskette” on page 38
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. See “System Diagnostic Diskette” on page 38.
Modem phone port
modem combo board
System board
Power Management-Related Symptoms
Symptom / ErrorAction in Sequence 
						

							Chapter 477
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.  
						

							78Chapter 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” on page 67):
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:
!Non-Acer devices
!Printer, mouse, and other external devices
!Battery pack
!Hard disk drive
!DIMM 
!CD-ROM/Diskette drive Module
!PC 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:
!System board
!LCD assembly 
						

							Chapter 479
Index of AFlash BIOS Error Message
Error MessageAction in Sequence
Hardware Error  See “System Diagnostic Diskette” on page 38
VPD Checksum Error Reboot the system and then restest with this diskette.
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. 
						

							80Chapter 4
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 
						

							Chapter 581
To p  Vi e w
VR1PH3
PH2PH1
CN13
CN8 U2
CN7
CN2
CN5
CN4
CN3
CN6
CN1
CN9
CN10 CN12
CN15 SW1
CN16
CN18 CN26 CN19
CN11 CN14
CN17
Jumper and Connector Locations
Chapter 5 
						

							82Chapter 5
PCB 01200-S
SW1 Settings
VR1 Volume Control CN1 PS/2 Port
PH3 Microphone-in Port CN9 LCD Cover Switch Connector
PH2 Line-in Port CN10 LED/Inverter Board Connector
PH1 Line-out Port CN12 External CD/DVD-ROM Module 
Connector
CN13 Cardbus Socket CN15 Internal Keyboard Connector
CN8 FAN Connector SW1 See SW1 Setting listed below
U2 FIR CN16 Finger Print Check
CN7 USB Port CN18 HDD Connector
CN2 VGA Port CN26 Battery Connector
CN5 LAN Connector (RJ45) CN19 Debug Board
CN4 Parallel Port CN11 LCD FPC Connector
CN3 Serial Port CN14 RTC Batteru Connector
CN6 Modem Connector (RJ11) CN17 TouchPad Connector
SW4Setting
Switch 1 ON:    Enable password check
OFF:  Disable password check
Switch 2 ON:    Enable BootBlock Erasable
OFF:  Disable BootBlock Erasable
Switch 3 OFF:  US keyboard
ON:    Japanese keyboard
OFF:  Europe keyboard
OFF:  US International keyboard
Switch 4 OFF:  US keyboard
OFF:  Japanese keyboard
ON:    Europe keyboard
OFF:  US International keyboard