Safety; Esd Precautions; Keystroke Conventions - HP 54520 Series Service Manual

WARNING
Troubleshooting
This section provides troubleshooting information for the HP 54520 and 54540 series
oscilloscopes. The service strategy of this instrument is replacement of defective
assemblies. The main assembly can be replaced on an exchange basis.
There are three main areas in this chapter. The troubleshooting helps you find a
defective assembly when the instrument fails. After the troubleshooting are several
pages that give an overview of the utility menus. Last is a copy of the registration
form that you can print out of the instrument.
Safety
Read the Safety Summary at the front of this manual before servicing the instrument.
Before performing any procedure, review it for cautions and warnings.
Maintenance should be performed by trained service personnel aware of the hazards
involved (for example, fire and electric shock). Lack of training and awareness of the
hazards could result in electrical shock. When maintenance can be performed without power
applied, the power cord should be removed from the instrument.
Tools Required
Just the normal tools used when troubleshooting electronic equipment are needed. A
good digital multimeter and an oscilloscope with about a 100 MHz bandwidth should
be sufficient.
If you need to remove and replace assemblies, you may need some of the hand tools
listed in chapter 6, "Replacing Assemblies."
ESD Precautions
When using any of the procedures in this chapter, you should use proper ESD
precautions. As a minimum you should place the instrument on a properly grounded
ESD mat and wear a properly grounded ESD wrist strap.
Keystroke Conventions
To guide you while setting up the oscilloscope, the following conventions are used to
represent keystrokes and other interactions with the instrument:
Text inabox, suchas Autoscale or Utility , represents hardkeys, those
defined by text on the front panel. It may be a shifted key.
Bold text in a typewriter font, such as Display or Calibrate..., represents text on
the CRT screen and may be a softkey you should press or a message to consider.
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