Gateway NV42 Series, Service Manual

Page: 147 / 200

Chapter 4 137
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 136.
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 139.
St a rt
Po w er On?
Extern a l DDRR A M
w ell connected?
See No Po w er
troubleshooting
Connect w ell
S wa p M a inbo a rd
OK
NG
NG
OK
OK
Extern a l DDRR A M
good?
CPU Ther ma l m od.
se a ted w ell?
Repl a ce m odule
Secure scre w s
OK
NG
NG
OK
OK OK
LCD Module OK?
Repl a ce LCD
P a nel/C a ble
NG
OK OK