Tektronix DSA8300, Service Manual

Page: 49 / 138

Maintenance
This section contains the information needed to do periodic and corrective
maintenance on the mainframe, electrical modules, and optical modules, as well
as repackaging instructions for returning the products to Tektronix for service.
Preventing ESD
Before servicing this product, read the General Safety Summary and Service
Safety Summary at the front of the manual, and familiarize yourself with the
following electrostatic discharge (ESD) information.
CAUTION. Electrostatic discharge can damage any semiconductor component
in this instrument.
When performing any service that requires internal access to the instrument,
adhere to the following precautions to avoid damaging internal assemblies and
their components due to electrostatic discharge:
1. Minimize handling of static-sensitive circuit boards and components.
2. Transport and store static-sensitive assemblies in their static protected
containers or on a metal rail. Label any package that contains static-sensitive
boards.
3. Discharge the static voltage from your body by wearing a grounded antistatic
wrist strap while handling these assemblies. Service static-sensitive
assemblies only at a static-free work station.
4. Do not place anything capable of generating or holding a static charge on the
work station surface.
5. Handle circuit boards by the edges when possible.
6. Do not slide the circuit boards over any surface.
7. Avoid handling circuit boards in areas that have a fl oor or work-surface
covering capable of generating a static charge.
Inspection and Cleaning
Inspection and cleaning are done as preventive maintenance. Preventive
maintenance, when done regularly, may prevent instrument malfunction and
enhance its reliability.
Preventive maintenance consists of visually inspecting and cleaning the
instrument and using general care when operating it.
DSA8300 Digital Serial Analyzer and Modules Service Manual 4–1