Blank Or Missing Pixels; The Screen Saver Is Not Functioning - Keysight N5171B EXG Service Manual

Troubleshooting
Troubleshooting Assembly Level Problems

Blank or Missing Pixels

Verify functionality by performing the front panel LCD Pixel tests.
Press: Utility > Instrument Info > Front Panel Tests > Pixel Screen Tests
— If the same area of the display is blank during each pixel test, replace the
— If an area of the display is only blank during some of the tests, replace the

The Screen Saver is Not Functioning

The screen saver delay can be set from 1 to 12 hours. The PIC Controller
controls the screen saver by turning the LCD backlight on or off.
1. Verify the signal generator is turned on.
2. Set the delay time to 1 hour. Press: Utility > Display > Screen Saver
3. Allow the screen saver delay time to elapse.
4. Check to see if the display has gone dark.
5. If the display has not gone dark, replace the A6 Front Panel Interface Scan
6. Set the delay time to 1 hour.
7. Allow the screen saver delay time to elapse.
8. Check to see if the display has gone dark.
9. If the display still has not gone dark, replace the A5 CPU assembly.
68
LCD Display.
A6 Front Panel Interface Scan board.
Delay, then turn the RPG knob.
board.
Keysight X-Series Signal Generators Service Guide