Acer 7745 manual No Display Issue, Start

Models: 7745

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Image 151

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:

 

 

 

START

 

 

Replace LCD

No

LCD Module OK?

 

 

 

Panel and

 

 

Go to No Power

 

 

 

 

Cable

 

 

 

 

 

 

Power On ?

No

troubleshooting

 

 

 

 

 

 

 

 

step

 

 

 

Ext. DDRAM module

No

Reconnect

 

 

 

SDRAM Module

 

 

 

connected properly?

 

 

 

 

Ext. DDRAM

No

Replace external

 

 

 

module functional?

DDRAM module

 

 

 

 

 

 

Replace the

CPU Thermal

 

Remove and

 

 

No

replace thermal

 

 

main board

Module properly

 

 

connected?

 

module

 

 

 

 

 

 

 

 

 

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 143.

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

Chapter 4

141

Page 151
Image 151
Acer 7745 manual No Display Issue, Start