Specifications

Chapter 4: Troubleshooting
Display Troubleshooting
65
WARNING SHOCK HAZARD!
The backlight inverter assembly, which is mounted at the front corner of the oscilloscope
near the flat- panel display, operates at 1.65 kV at turn on. DO NOT handle this assembly
while it is in operation. An LED on the inverter board illuminates to indicate the
presence of high voltage.
WARNING INJURY CAN RESULT!
Once the cover is removed, the fan blades are exposed both inside and outside the
chassis. Disconnect the power cable before working around the fans. Use extreme caution
in working with the oscilloscope when the cover is removed. If the procedure allows,
replace the cover over the chassis (without screwing it back in place) before turning
the oscilloscope on. If the procedure requires you to have the cover off, be careful not
to let these fan blades come in contact with any part of your body.
For information on how to replace the display parts, see the "Replacing Assemblies"
chapter.