No Display Issues - Acer Aspire S5-391 Service Manual

No Display Issues

If the system does not display, perform the following:
No POST or Video
If the POST or video does not appear, perform the following:
Make sure that internal display is selected. Switching between internal and external by
1.
pressing Fn+F5. Reference Product pages for specific model procedures.
Make sure the computer has power by checking for one of the following:
2.
• Fans start up
• Status LEDs illuminate
If there is no power, refer to
3.
step.
If there is power, drain the stored power by removing the power cable. Hold the power button
4.
for 10 seconds.
Connect the power and reboot the computer.
5.
Connect an external monitor to the computer and switch between the internal display and the
6.
external display is by pressing Fn+F5.
If the POST or video appears on the external display only, refer to
7.
page 4-6. Otherwise, continue to the next step.
Disconnect the power and all external devices including port replicators or docking stations.
8.
Remove any memory cards.
9.
Troubleshooting
Start
OK
NG
Can
Power on
OK
NG
LCD cable well
connected
OK
NG
LCD panel/cable
ok
OK
Replace M/B
Figure 4-2. No Display Issues
Power On Issues
Go to no power
Trouble shooting
step
Connect it well
Replace LCD
panel/cable
inverter/B
on page 4-3. Otherwise, continue to the next
LCD Picture Failure on
4-4