Backlight test
1. Open the control-panel system diagnostic tests. See Open the control-panel system diagnostic tests
on page 118.
2. Use the down arrow button to scroll to 4 Backlight Test, and then press the OK button to select it.
After selecting the 4 Backlight Test, the screen automatically dims, and then returns to full brightness.
NOTE: Touch any key to exit the test.
Figure 2-39 Open the backlight test
ENWW Troubleshooting process 129