Acer Aspire 1670 Service Guide

							75Chapter 4
Index of Sympton-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 Setup Defaults” 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 Defaults”, 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 66. 
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 66.
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 
						

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Battery can’t be charged or discharged See “Check the Battery Pack” on page 67. 
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 Setup Defaults” 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 
						

							77Chapter 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 Setup Defaults” 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 Setup Defaults” 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 
						

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NOTE: If you cannot find a symptom or an error in this list and the problem remains, see “Undetermined 
Problems” on page 80. 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 
						

							79Chapter 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.  
						

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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 66):
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 
						

							81Chapter 4
How to Build NAPP Master Hard Disc Drive
CD to Disk Recovery
1.Prepare NAPP CD, Recovery CD and System CD.
2.Put NAPP CD into the optical drive. Then boot up the system.
3.The system will ask you if you want to build NAPP Master HDD. Please press any key to continue.
4.NAPP CD will start to preload the system, please click [Y].
5.Select CD to Disk Revocery. 
						

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6.Put the Recovery CD to the optical drive. This step is to create image files to the system, you do not have 
to put the Recovery CD to the optical drive in order. Place one Recovery CD to the drive at one time till 
you finish all Recovery CDs.
After you place the Recovery CD to the optical drive, you will see the display below. 
						

							83Chapter 4
7.Then insert the System CD to the optical drive.
8.You will see the screen displaying “PASS” when the system has buit NAPP Master hard disc drive. 
						

							Chapter 484
Disk to Disk Recovery
1.Prepare NAPP CD, Recovery CD and System CD.
2.Put NAPP CD into the optical drive. Then boot up the system.
3.The system will ask you if you want to build NAPP Master HDD. Please press any key to continue.
4.NAPP CD will start to preload the system, please click [Y].