Acer Aspire 9300 Service Guide

							
72Chapter 3
LCD Disassembly
1.Remove the eight rubber caps on the LCD bezel and release the eight screws securing the 
LCD bezel.
2.Detach the LCD bezel from the LCD module as shown.
3.Release the screw holding the inverter board.
4.Disconnect the inverter board cables as shown and remove the inverter board. 
						

							
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5.Release the four screws securing the LCD panel.
6.Detach the LCD panel carefully and reverse it as shown.
7.Tear off the tapes holding the LCD panel cable carefully then disconnect the LCD panel.
8.Remove the antenna from the LCD cover. 
						

							
74Chapter 3
9.Release the four screws securing the left LCD bracket then remove the left LCD bracket.
10.Repeat the anterior step to remove the right LCD bracket. 
						

							
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11 .Release the screw holding the CCD module and carefully pull the CCD module cable and LCD 
cable through the latch bar and LCD cover.
12.Remove the CCD module cap.
13.Remove the CCD module ring.
14.Push the CCD module upper case a little bit.
15.Then Separate the lower case from the upper case.
16.Release the two screws holding the CCD module board the detach the CCD module board. 
						

							
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Please use the following procedures as a guide for computer problems.
NOTE: The diagnostic tests are intended to test only Acer  products. Non-Acer products, prototype cards, or 
modified options may occur errors or invalid responses.
1.
Obtain the detailed fail sympto ms as many as possible.
2.Verify the symptoms by attempti ng to recreate, running the diagnostic tests or repeating the 
same operation.
3.Disassemble and assemble the unit without any power sources.
4.If any problem occurs, you can perform visual inspection before you fellow this chapter’s 
instructions. You can check the following:
TPower cords are properly connected and secured;
TThere are no obvious shorts or opens;
TThere are no obviously burned or heated components;
TAll components appear normal.
Troubleshooting
Chapter 4 
						

							
77Chapter 4
System Check Procedures
External Diskette Drive Check
Do the following procedures to isolate the possible effects from a controller, driver, or diskette. A 
writable, diagnostic diskette is required.
NOTE:  Make sure that the diskette does not have more t han one label attached. Multiple labels may cause 
damage to the drive or make the drive fail.
1.
Boot from the diagnostic diskette and start the diagnostic programs.
2.See if FDD test is passed as the programs run the FDD test.
3.Follow the instructions  in the message window.
If errors occur with the internal  diskette driver, reconnect the diskette connector on the system 
board. If the er rors still remain:
1.Reconnect the external diskette drive.
2.Replace the external diskette driver.
3.Replace the main board.
External CD-ROM Drive Check
Do the following procedures to isolate the possibl e effects from a controller, driver, or CD-ROM. 
NOTE: Make sure that the CD-ROM does not have any la bel attached. The label may cause damage to the 
drive or make the drive fail.
1.
Boot from the diagnostic diskette and start the diagnostic programs.
2.See if CD-ROM test is passed when  the programs run the CD-ROM test.
3.Follow the instructions in the message window.
If errors occur, reconnect th e connector on the system board . If the errors still remain:
1.Reconnect the external CD-ROM drive.
2.Replace the external CD-ROM drive.
3.Replace the main board.
Keyboard or Auxiliary Input Device Check
Remove the external keyboard if the internal keyboa rd is under test. If the internal keyboard does 
not work or an unexpected error appears, make sure that the flexible cable extending from the 
internal keyboard is correctl y connected on the system board. If the keyboard is correctly 
connected, run the Keyboard test.
If errors occur, do the following procedures in sequence to correct the problems. Do not replace a 
non-defective FRU.
1.Reconnect the keyboard cable.
2.Replace the keyboard.
3.Replace the main board.
The following auxiliary input devices  are supported by this computer. 
						

							
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TNumeric keypad
TExternal keyboard
If any of these devices do not function, reconnect the cable and repeat the anterior procedures.
Memory Check
Follow the procedures below to correct the memory errors.
1.Boot from the diagnostic diskette and start the diagnostic programs.
2.Go to the diagnostic memory in the test items.
3.Press F2 in the test items.
4.Follow the instructions  in the message window.
NOTE: Make sure that the DIMM is correctly inserted into the connector. A wrong connection will cause 
errors.
Power System Check
To verify the symptoms, power on the computer by using the following power sources separately.
1.Remove the battery pack.
2.Connect the power adaptor and check the power supply.
3.Disconnect the power adaptor and install the battery pack, then check the power supply.
If you think there is a power supply problem, plea se go to “Check the Power Adaptor” and “Check 
the Battery Pack” in this chapter.
Check the Power Adaptor
Unplug the power adaptor cable from the computer and measure the output voltage at the plug of 
the power adapto r cable. See the illustration an d follow the procedures below.
1.If the voltage is not correct, replace the power adaptor.
2.If the voltage is within the range:
(1)Replace the system board.
(2)If the problem is still not resolved, see “Undetermined Problems”.
(3)If the voltage is not correct, go to the next step.
NOTE: An audible noise from the power adaptor does not always indicate a defect.
3.
If the power-on indicator does not light up, check the power cord of the power adaptor for 
continuity and corr ect installation.
4.If the operational charge does not work, see “Check the Battery Pack”.
pin 1: +19V to +20.5V
pin 2: 0V, ground 
						

							
79Chapter 4
Check the Battery Pack
Follow the procedures below to check the battery pack.
From software, this helps to identify the problem is on recharging or discharging.
1.Check the Power Management in Control Panel.
2.Then confirm that the parameters shown in the screen for Current Power Source and Total 
Battery Power Remaining are correct.
3.Repeat the step 1 and step 2 for both battery and adaptor.
From hardware, this helps to identify whether you should replace the battery pack or not.
1.Power off the system.
2.Remove the battery pack and measure the voltage between terminals one (+) and seven (-). 
There are seven terminals totally. See the illustration below.
3.If the voltage is still less than 7.5V af ter recharging, replace the battery.
If the battery status indicator doe s not light up, remove the battery pack. After the battery pack 
returns to room temperature,  reinstall it to the system.
If the charge indicator does not lig ht up, replace the battery pack. If the charge indicator still does 
not light up, replace the AC/DC charger board.
Touchpad Check
If the touchpad does not work, follow the procedures one at a time to correct the problem. Do not 
replace a non-defective FRU.
1.After rebooting, run Tracking Pad PS2 Mode  Driver. For example, run Syn touch driver.
2.Run utility with the PS/2 mouse function and check if the mouse is working. 
						

							
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3.If the PS/2 mouse does not work, then click if the main board to switch board FPC is connected 
properly.
4.If the main board to switch board FPC is con nected correctly, then check if the FFC on the 
touch pad PCB is connected properly.
5.If the FFC on the touch pad PCB is connected co rrectly, check if LS851 JP1 Pin6 = 5V are 
pules. If yes, then replace switch board . If not, then go to the next step.
6.Replace the touch pad PCB.
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 th e screen for a short time. This self-acting pointer 
movement will occur when a slight, steady pressu re is applied to the touchpad pointer. This 
symptom is not a hardware problem. No actions ar e necessary to be taken if the pointer movement 
stops in a short period of time.