Acer Travelmate 2350 Service Guide

							Chapter 345
Disassembling the Main Unit
1.Disconnect the wire cable from the mainboard .
2.Be caution of the cable to release from the tab before you to conduct the panel disassemble.
3.Detach the entire panel out from the system.
4.Remove the four screws to release the thermal.
5.Detach the thermal board and disconnect the thermal cable from the mainboard. 
6.With a flat screwdriver to release the CPU with anti-clockwise direction.
7.Detach the CPU from the socket. 
8.Push outward both side latches to release the wireless board and take it away.
9.Take the MDC board out from the mainboard with plastic flat screwdrive tool.
10.Disconnect the MDC cable from the MDC board. 
						

							46Chapter 3
1.Remove the four screws to detach the panel cover from panel moudle.
2.Detach the cover from the panel.
.
3.Remove the two screws on both sides that fasten the LCD bracket.
4.Disconnect the backlight cable and wireless cable from the invertor board.
5.Detach the LCD panel.
6.Remove the four screws on each side to release the panel bracket.
7.Disconnect the coaxial cable.
8.Remove one screw.
9.Detach the invertor board from the position.
10.Remove the two screws to release the anntenna. 
						

							Chapter 347
11 .Remove the 10 screws to release the lower case.
12.Remove the 3 screws located at the upper case.
13.Disconnect the touchpad FPC from the mainboard.
14.Disconnect the speaker cable.
15.Then detach the upper case assembly. 
						

							48Chapter 3
16.Remove the two screws to release the touchpad support bracket .
17.Disconnect the touchpad FPC.
18.Push toward left direction and take the touchpad support bracket.
19.Detach the touchpad out from the upper case .
20.Remove the one screw to release the mainboard.
21.Disconnect the LED cable.
22.Detach the mainboard out from the chassis.
23.Detach the LED board.
24.Remove the four screws to release the PCMCIA slot from MB.
25.Detach the PCMCIA from the mainboard. 
26.Remove the three screws to release the fan.
27.Detach the fan from the thermal module. 
						

							Chapter 349
28.Remove the two screws fastening the speakers.
29.Detach the speakers on each side.
Disassembling the HDD Module
1.Remove the two screws holding the HDD bracket on one side.
2.Detach the HDD unit from the bracket.
3.Detach the ESD plate from the HDD unit.
4.Remove the 3 screws to release the ODD module
5.Detach the ODD bracket.
6.Detach the ODD cover. 
						

							Chapter 450
System Check Procedures
External Diskette Drive Check
Do the following steps to isolate the problem to a controller, driver, or diskette. A write-enabled, diagnostic 
diskette is required.
NOTE: Make sure that the diskette does not have more than one label attached to it. Multiple labels can cause 
damage to the drive or cause the drive to fail.
Do the following to select the test device.
1.The FDD heads can become dirty over time, affecting their performance. Use an FDD cleaning kit to clean 
the heads. If the FDD still does not function properly after cleaning, go to next step.
2.Boot from diagnostic program.
3.If an error occurs with the internal diskette drive, reconnect the diskette connector on the main board.
If the error still remains:
1.Reconnect the external diskette drive module.
2.Replace the external diskette drive module.
3.Replace the main board.
External CD-ROM/DVD-ROM Drive Check
Do the following to isolate the problem to a controller, drive, or CD-ROM/DVD-ROM. Make sure that the CD-
ROM does not have any label attached to it. The label can cause damage to the drive or can cause the drive to 
fail.
Do the following to select the test device:
1.Insert an audio CD into the CD/DVD drive. If the CD/DVD drive can read the data from the audio CD. The 
drive does not have problem, then go to next step. If the CD/DVD LED on the front panel does not emit 
light as it read the data from the audio CD, then go to next step. However, if the CD/DVD drive can not 
read data from the audio CD, you may need to clean the CD/DVD drive with a CD/DVD drive cleaning 
disk.
2.Make sure that the appropriate driver has been installed on the computer for the CD/DVD drive.
3.Boot from the diagnostics diskette and start the diagnostics program 
4.See if CD-ROM Test is passed when the program runs to CD-ROM/DVD-ROM Test.
5.Follow the instructions in the message window.
If an error occurs, reconnect the connector on the main board. If the error still remains:
1.Reconnect the CD-ROM/DVD-ROM module.
2.Replace the CD-ROM/DVD-ROM module.
3.Replace the main board.
Troubleshooting
Chapter 4 
						

							51Chapter 4
Keyboard or Auxiliary Input Device Check
Remove the external keyboard if the internal keyboard is to be tested.
If the internal keyboard does not work or an unexpected character appears, make sure that the flexible cable 
extending from the keyboard is correctly seated in the connector on the main board.
If the keyboard cable connection is correct, run the Keyboard Test.
If the tests detect a keyboard problem, do the following one at a time to correct the problem. Do not replace a 
non-defective FRU:
1.Reconnect the keyboard cables.
2.Replace the keyboard.
3.Replace the main board.
The following auxiliary input devices are supported by this computer:
!Embedded Numeric Keypad
!External keyboard
If any of these devices do not work, reconnect the cable connector and repeat the failing operation.
Memory Check
Memory errors might stop system operations, show error messages on the screen, or hang the system. 
Currently, we do not provide memory test program. However, if you need to check memory but have no testing 
program or diagonositc utility at hand, please go to http://www.passmark.com to download the shareware 
“BurnIn Test V.3.0”. You may test the memory with this program under Window XP environment.
NOTE: Make sure that the DIMM is fully installed into the connector. A loose connection can cause an error.
Power System Check
To verify the symptom of the problem, power on the computer using each of the following power sources:
1.Remove the battery pack.
2.Connect the power adapter and check that power is supplied.
3.Disconnect the power adapter and install the charged battery pack; then check that power is supplied by 
the battery pack. 
						

							Chapter 452
Check the Power Adapter
Unplug the power adapter cable from the computer and measure the output voltage at the plug of the power 
adapter cable. See the following figure
1.If the voltage is not correct, replace the power adapter.
2.If the voltage is within the range, do the following:
!Replace the main board.
!If the problem is not corrected, see “Undetermined Problems” on page 60.
!If the voltage is not correct, go to the next step.
NOTE: An audible noise from the power adapter does not always indicate a defect.
3.If the DC-IN indicator does not light up, check the power cord of the power adapter for correct continuity 
and installation.
4.If the operational charge does not work, see “Check the Power Adapter” on page 52. 
Pin 1: 19V
Pin 2: 0V, Ground 
						

							53Chapter 4
Check the Battery Pack
To check the battery pack, do the following:
From Software:
1.Check out the Power Options in control Panel
2.In Power Meter, confirm that if the parameters shown in the screen for Current Power Source and Total 
Battery Power Remaining are correct.
3.Repeat the steps 1 and 2, for both battery and adapter.
4.This helps you identify first the problem is on recharging or discharging.
From Hardware:
1.Power off the computer. 
2.Remove the battery pack and measure the voltage between battery terminals 1(+) and 6(ground).
3.If the voltage is still less than 7.5 Vdc after recharging, replace the battery.
4.If the voltage is within the normal range, run the diagnostic program.
To check the battery charge operation, use a discharged battery pack or a battery pack that has less than 50% 
of the total power remaining when installed in the computer. 
If the battery status indicator does not light up, remove the battery pack and let it return to room temperature. 
Re-install the battery pack.
If the charge indicator still does not emit, replace the battery pack. If the charge indicator still does not light up, 
replace the DC/DC charger board.
Touchpad Check
If the touchpad doesn’t work, do the following actions one at a time to correct the problem. Do not replace a 
non-defective FRU:
1.After rebooting, run Touch pad/PS2 Mode Driver.
2.Run utility with the PS/2 mouse function and check if the mouse is working.
3.If the PS/2 mouse does not work, then check if the main board to switch board FPC is connected well.
4.If the main board to switch board FPC is connected well, then check if the touch pad  FPC connects to the 
main board properly.
5.If there is still an error after you have connected the touch pad FPC to the main board properly, then 
replace the touch pad or touch pad FPC. The touch pad or touch pad FPC may be damaged.
6.Replace switch board.
7.If the touch pad still does not work, then replace the FPC on Track Pad PCB.
After you use the touchpad, the pointer drifts on the screen for a short time. This self-acting pointer movement 
can occur when a slight, steady pressure is applied to the touchpad pointer. This symptom is not a hardware 
problem. No service actions are necessary if the pointer movement stops in a short period of time.
Display Check
1.Connect an external display to the computer’s external monitor port, the boot the computer. The computer 
can automatically detect the external display. Press Fn+ p to switch to the external display.
2.If the external display works fine, the internal LCD may be damaged. Then perform the following steps:
Make sure the DDRRAM module is seated properly. Then run the diplay test again. If the problem 
still exists, go to next step.
Replace the inverter board, then run the display test program again. If the problem still occurs, go 
on next step.
Replace the LCD module with a new one then run the display test again. If the probelm still 
happens, continue next step.
Replace LCD/FL cable with a new one then execute the display diagnostic again. If the problem  
						

							Chapter 454
still occurs, continue next step.
Replace the CPU with another of the same specifications. If the problems still occurs, go to next 
step.
The main board may be damaged. Replace main board.
3.If the external monitor has the same problem as the internal monitor,  the main board may be damaged. 
Please insert the diagnostic disk and run the display test program and go through the sub-steps under 
step 2.
Sound Check
To determine if the computer’s built-in speakers are functioning properly, perform the following steps. Before 
you start the steps below, adjust the speaker volume to an appropriate level. 
1.Try different audio sources. For example, employ audio CD and ditital music file to determine whether the 
fault is in the speaker system or not. If not all sources have sound problem, the problem is in the source 
devices. If all have the same problem, continue next step.
2.Connect a set of earphone or external speakers. If these devices work fine, go to next step. If not, then the 
main board may be defective or damaged. Replace the main board.
3.Follow the disassembling steps in Chapter 3. Esure the speaker cable is firmly connected to the main 
board. If the speaker is still a malfunction, go on next step.
4.If the speakers do not sound properly, the speakers may be defective or damaged. Replace the speakers. 
If the problem still occurs, then replace the main board.