Acer 4535G, 4235 manual No Display Issue, No Post or Video

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:

Replace CPU	No	CPU OK?
Replace		LCD module
LCD panel/	No
		OK?
LCD cable
		Replace
		M/B

START

		goto no power
Power On?	No	trouble shooting
		step
Ext. DDRRAM
		Connect
module well	No
		it well
connected?
Ext. DDRRAM		Replace
	No	Ext. DDR RAM
module OK?
		module

CPU well
	No	Connect it well
connected?

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 140.

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 144.

5.Disconnect power and all external devices including port replicators or docking stations. Remove any memory cards and CD/DVD discs. Restart the computer.

If the computer boots correctly, add the devices one by one until the failure point is discovered.

6.Reseat the memory modules.

7.Remove the drives (see “Disassembly Process” on page 42).

8.If the Issue is still not resolved, see “Online Support Information” on page 241.

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