138
Chapter 4
Power On Issue
If the system doesn’t power on, perform the following actions one at a time to correct the problem. Do not
replace a non-defective FRUs:
Computer Shutsdown Intermittently
If the system powers off at intervals, perform the following actions one at a time to correct the problem.
1.
Check the power cable is properly connected to the computer and the electrical outlet.
2.
Remove any extension cables between the computer and the outlet.
3.
Remove any surge protectors between the computer and the electrical outlet. Plug the computer directly
into a known good electrical outlet.
4.
Disconnect the power and open the casing to check the Thermal Unit and fan airways are free of
obstructions.
5.
Remove all external and non-essential hardware connected to the computer that are not necessary to
boot the computer to the failure point.
6.
Remove any recently installed software.
7.
If the Issue is still not resolved, see “Online Support Information” on page 205.
Содержание 4740G series
Страница 6: ...VI ...
Страница 10: ...X Table of Contents ...
Страница 56: ...46 Chapter 2 ...
Страница 63: ...Chapter 3 53 5 Carefully open the HDD Cover ...
Страница 65: ...Chapter 3 55 5 Remove two 2 screws from the WLAN bracket and lift it clear of the device ...
Страница 90: ...80 Chapter 3 5 Remove the TouchPad Bracket from the Upper Cover ...
Страница 92: ...82 Chapter 3 Step Size Quantity Screw Type Media Board M2 5 3 2 ...
Страница 94: ...84 Chapter 3 5 Lift the FFC to detach the adhesive from the casing 6 Lift the USB Board clear of the casing ...
Страница 97: ...Chapter 3 87 Step Size Quantity Screw Type Bluetooth Module M2 5 3 1 ...
Страница 99: ...Chapter 3 89 7 Lift one edge of the mainboard as shown to remove it from the base ...
Страница 107: ...Chapter 3 97 4 Lift the bezel away from the panel ...
Страница 110: ...100 Chapter 3 4 Lift the LCD Panel out of the casing as shown ...
Страница 117: ...Chapter 3 107 13 Ensure that the securing pin is properly located ...
Страница 129: ...Chapter 3 119 ...
Страница 134: ...124 Chapter 3 4 Turn the computer over Replace the fifteen screws on the bottom panel ...
Страница 141: ...Chapter 3 131 4 Turn the computer over and replace the six 6 securing screws as shown ...
Страница 186: ...176 Chapter 6 ...
Страница 187: ...Chapter 6 177 ...
Страница 208: ...Appendix A 198 ...
Страница 214: ...204 Appendix B ...
Страница 216: ...206 Appendix C ...