Acer Travelmate 6492 Service Guide

							Chapter 391
Replacing the Switch Board
Replacing the Keyboard
1. Place the Switch Board in the mounting as shown.
2. Insert the cable into the port and secure the locking latch using fine tweezers.
3. Secure the Switch Board in place using the screw provided.
1. Using fine tweezers, insert the thicker cable into the socket and secure the locking latch as shown. 
						

							92Chapter 3
2. Using fine tweezers, insert the remaining cable into the socket and secure the locking latch as shown.
3. Turn the keyboard over and place the front edge first into the mounting.
4. Push the Keyboard into place toward the TouchPad and secure using the two screws provided. 
						

							Chapter 393
Replacing the Switch Cover
Replacing the Wireless Card
1. Place the Switch Cover as shown and press down until no gaps are visible between the cover and the 
chassis.
2. Close the LCM Module and turn the computer over. Locate and replace the four screws as shown.
Note: Two of the screws are located within the battery cradle.
1. Ensure the card is positioned label upwards as 
shown and push into the connector.
Note: The card remains at an angle until the 
screws are inserted.2. Secure the card in position using the two screws 
provided. 
						

							94Chapter 3
Replacing the Memory Modules
3. Reconnect the three Antenna Cables as shown, pushing down firmly to connect the cables.
Cable ColorConnector Number
Black 1
White 2
Gray 3
1. Using two hands, push the lower module into the socket until it clicks into place.
2. Using two hands, push the upper module into the socket and press downward until it clicks into place. 
						

							Chapter 395
Replacing the BTCB Screws
Replacing the HDD
Replacing the ODD
1. Locate and secure the twenty (20) BTCB screws as shown.
1. Place the HDD in the mounting, rear edge first as 
shown.2. Push down firmly into the mounting to secure the 
HDD.
1. Brace the computer with one hand and insert the 
ODD into the bay as shown.2. Push the ODD until it is fully inserted i.e. the ODD 
is flush with the chassis casing. 
						

							96Chapter 3
Replacing the CTO Cover
Replacing the Battery Pack
1. Place the CTO Cover rear edge first on to the 
chassis as shown.2. Push down fully until no gaps are visible between 
the CTO Cover and the chassis.
3. Secure the CTO Cover using the seven screws provided.
1. Place the battery in the cradle as shown. 2. Push the battery toward the computer until it 
clicks in to place.
3. Engage the battery locks as shown. 
						

							Chapter 497
Use the following procedure 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 can give false errors and invalid system responses.
1. Obtain the failing symptoms in as much detail as possible.
2. Verify the symptoms by attempting to re-create the failure by running the diagnostic test or by repeating the 
same operation.
3. Use the following table with the verified symptom to determine which page to go to.
Symptoms (Verified)Go To
Power failure. (The power indicator does 
not go on or stay on.)“Power System Check” on page 99.
POST does not complete. No beep or error 
codes are indicated.“Power-On Self-Test (POST) Error 
Message” on page 101
“Undetermined Problems” on page 115
POST detects an error and displayed 
messages on screen.“Error Message List” on page 102
Other symptoms (i.e. LCD display problems 
or others).“Power-On Self-Test (POST) Error 
Message” on page 101
Symptoms cannot be re-created 
(intermittent problems).Use the customer-reported symptoms and 
go to “Power-On Self-Test (POST) Error 
Message” on page 101
“Intermittent Problems” on page 114
“Undetermined Problems” on page 115
Troubleshooting
Chapter 4 
						

							98Chapter 4
System Check Procedures
External Diskette Drive Check
Do the following 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. Boot from the diagnostics diskette and start the diagnostics program.
2. See if FDD Test is passed as the program runs to FDD Test.
3. Follow the instructions in the message window.
If an error occurs with the internal diskette drive, reconnect the diskette connector on the system board.
If the error still remains:
1. Reconnect the external diskette drive/DVD-ROM module.
2. Replace the external diskette drive/CD-ROM module.
3. Replace the main board.
External CD-ROM Drive Check
Do the following to isolate the problem to a controller, drive, or CD-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. Boot from the diagnostics diskette and start the diagnostics program.
2. See if CD-ROM Test is passed when the program runs to CD-ROM Test.
3. Follow the instructions in the message window.
If an error occurs, reconnect the connector on the System board. If the error still remains:
1. Reconnect the external diskette drive/CD-ROM module.
2. Replace the external diskette drive/CD-ROM module.
3. Replace the main board.
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 system 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:
qNumeric keypad
qExternal 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. 
						

							Chapter 499
1. Boot from the diagnostics diskette and start the diagnostic program (please refer to main board.
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 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.
If you suspect a power problem, see the appropriate power supply check in the following list:
q“Check the Power Adapter” on page 99
q“Check the Battery Pack” on page 99
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:
qReplace the System board.
qIf the problem is not corrected, see “Undetermined Problems” on page 115.
qIf 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 power-on 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 Battery Pack” on page 99. 
Check the Battery Pack 
To check the battery pack, do the following:
From Software:
1. Check out the Power Management 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. 
Pin 1: +19 to +20.5V
Pin 2: 0V, Ground 
						

							100Chapter 4
2. Remove the battery pack and measure the voltage between battery terminals 1(+) and 6(ground). See the 
following figure
3. If the voltage is still less than 7.5 Vdc after recharging, replace the battery. 
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 light up, 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. Reconnect the touchpad cables.
2. Replace the touchpad.
3. Replace the system board.
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.