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Chapter 4
139
No Display Issue
If the
Display
doesn’t work, perform the following actions one at a time to correct the problem. Do not replace
a 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 138.
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 141.
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 211.
Содержание Aspire 4240 Series
Страница 6: ...VI ...
Страница 10: ...X Table of Contents ...
Страница 14: ...4 Chapter 1 System Block Diagram ...
Страница 45: ...Chapter 2 35 A progress screen displays ...
Страница 50: ...40 Chapter 2 2 In DOS mode run the MAC BAT file to write MAC values to eeprom ...
Страница 57: ...Chapter 3 47 5 Remove the HDD Cover as shown ...
Страница 71: ...Chapter 3 61 5 Disconnect the speaker cable as shown and remove the Speaker from the Upper Cover ...
Страница 98: ...88 Chapter 3 4 Lift the bezel away from the panel ...
Страница 101: ...Chapter 3 91 4 Lift the LCD Panel out of the casing as shown ...
Страница 114: ...104 Chapter 3 3 Connect fan cable to the mainboard as shown Step Size Quantity Screw Type Thermal Module M 2 5 3 2 4 ...
Страница 125: ...Chapter 3 115 4 Replace the single securing screw ...
Страница 146: ...136 Chapter 3 ...
Страница 176: ...166 Chapter 5 ...
Страница 189: ...Chapter 6 179 ...
Страница 208: ...Appendix A 198 ...
Страница 220: ...210 Appendix B ...
Страница 222: ...212 Appendix C ...