56 6000 X-Series Oscilloscopes Service Guide
3 Calibrating and Adjusting
Read All Cautions and Warnings
Read the following cautions and warning before making adjustments or
performing self-calibration.
HAZARDOUS VOLTAGES!
Read the safety notice at the front of this book before proceeding.
Maintenance is performed with power supplied to the oscilloscope and with the protective covers
removed. Only trained service personnel who are aware of the hazards involved should perform the
maintenance. Whenever possible, perform the procedures with the power cord removed from the
oscilloscope.
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.
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 acquisition 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.
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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