Keysight Technologies E4417A Service Manual page 103

5 Replaceable Parts
After replacing a processor board, the display brightness and contrast must be
NOTE
adjusted. For further information refer to
Contrast
Firmware should be downloaded to the instrument after the processor board is
NOTE
replaced. Refer to
110
Adjustment".
"Firmware Upgrades"
Keysight E4416A/E4417A Power Meters Service Guide
Chapter 3, "Display Brightness and
on page 106.