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Maintenance
Preparation
Preventing ESD
Susceptibility to ESD
6-2
Before servicing this product, read the Safety Summary and Introduction at the
front of the manual and the ESD information below.
WARNING. To avoid electrical shock, disconnect the instrument from the AC
power supply before removing the cabinet or replacing any components.
CAUTION. Static discharge can damage any semiconductor component in this
instrument.
When performing any service which requires internal access to the waveform
monitor, adhere to the following precautions to avoid damaging internal modules
and their components due to electrostatic discharge (ESD).
1. Minimize handling of static-sensitive modules.
2. Transport and store static-sensitive modules in their static protected
containers or on a metal rail. Label any package that contains static-sensitive
modules.
3. Discharge the static voltage from your body by wearing a grounded antistatic
wrist strap while handling these modules. Do service of static-sensitive
modules only at a static-free work station.
4. Nothing capable of generating or holding a static charge should be allowed
on the work station surface.
5. Handle circuit boards by the edges when possible.
6. Do not slide the modules over any surface.
7. Avoid handling modules in areas that have a floor or work-surface covering
capable of generating a static charge.
Table 6–1 lists the relative susceptibility of various classes of semiconductors.
Static voltages of 1 kV to 30 kV are common in unprotected environments.
WFM 1125 Option 0A/0B/0C/0D Service Manual
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