.jpg)
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 than 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 drive, reconnect the diskette connector on the system board.
If the errors 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 possible effects from a controller, driver, or CD-ROM. NOTE: Make
sure that the CD-ROM does not have any label 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 the 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 keyboard 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 correctly 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.
* Numeric keypad
* External 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 adapter and
check the power supply.
3. Disconnect the power adapter
and install the battery pack, then check the power supply.
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 illustration and follow the procedures below.
1. If the voltage is not correct,
replace the power adapter.
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 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 continuity and
correct installation.
4. If the operational charge does
not work, see “Check the Battery Pack”.
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 adapter. 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 after recharging, replace the battery. If the battery status indicator does not
light up, remove the battery pack. After the battery pack returns to room
temperature, re-install it to the system.
If the charge indicator does not light up, replace the battery pack. If
the charge indicator still does not light up, replace the AC/DC charger board.
Touch-pad Check
If the touch-pad 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.
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 connected 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 correctly, check if LS851 JP1 Pin6 = 5V are pulse. 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 touch-pad, the pointer
drifts on the screen for a short time. This self-acting pointer movement will
occur when a slight, steady pressure is applied to the touch-pad pointer. This
symptom is not a hardware problem. No actions are necessary to be taken if the
pointer movement stops in a short period of time.
