52 5000 Series Oscilloscopes Service Guide
3 Calibrating and Adjusting
CAUTION
REMOVE POWER TO AVOID DAMAGE!
Do not disconnect any cables or remove any assemblies with power applied to the
oscilloscope. Otherwise, damage to the oscilloscope can occur.
CAUTION
USE EXTERNAL FAN TO REDUCE TEMPERATURE!
When you must operate the oscilloscope with its cover and main shield removed,
use an external fan to provide continuous air flow over the samplers (the ICs with
heat sinks on them). Air flow over the samplers is reduced when the cover and
main shield is removed, which leads to higher than normal operating temperatures.
Have the fan blow air across the system board where the heat sinks are located. If
the cover is removed but the main shield remains installed and the bottom holes
are not blocked, the instrument will cool properly.
CAUTION
AVOID DAMAGE TO ELECTRONIC COMPONENTS!
Electrostatic discharge (ESD) can damage electronic components. When you use
any of the procedures in this chapter, use proper ESD precautions. As a minimum,
place the oscilloscope on a properly grounded ESD mat and wear a properly
grounded ESD strap.
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