Acer 752 Laptop User Manual


 
Chapter 4 133
No Display Issue
If the Display doesn’t work, perform the following actions one at a time to correct the problem. Do not replace
non-defective FRUs:
No POST or Video
If the POST or video doesn’t display, perform the following actions one at a time to correct the problem.
1. Make sure that the internal display is selected. On this notebook model, switching between the internal
display and the external display is done by pressing Fn+F5. Reference Product pages for specific model
procedures.
2. Make sure the computer has power by checking at least one of the following occurs:
Fans start up
Status LEDs light up
If there is no power, see “Power On Issue” on page 132.
3. Drain any stored power by removing the power cable and battery and holding down the power button for
10 seconds. Reconnect the power and reboot the computer.
4. Connect an external monitor to the computer and switch between the internal display and the external
display is by pressing Fn+F5 (on this model).
If the POST or video appears on the external display, see “LCD Failure” on page 135.
5. Disconnect power and all external devices including port replicators or docking stations. Remove any
memory cards and CD/DVD discs. Restart the computer.
START
Power On ? No
Go to No Power
troubleshooting
step
Replace external
DDRAM module
Remove and
replace thermal
module
Replace the
main board
Reconnect
SDRAM Module
LCD Module OK?
Replace LCD
Panel and
Cable
Ext. DDRAM module
connected properly?
Ext. DDRAM
module functional?
CPU Thermal
Module properly
connected?
No
No
No
No