Preventive Maintenance - Tektronix VITS 200 Instruction Manual

Maintenance

Preventive Maintenance

Cleaning
Static-Sensitive
Components
VITS 200
This section has four main parts: preventive maintenance, troubleshooting aids,
diagnostics, and corrective maintenance.
Under average environmental conditions, preventive maintenance should be done
about every 2000 hours. This includes cleaning, visual inspection, a perfor-
mance check, and, if needed, calibration. See Section 5 for performance check
and calibration procedures.
Clean the instrument often enough to prevent dust or dirt from accumulating in
or on it. Dirt prevents efficient heat dissipation. It also provides high-resistance
electrical leakage paths between conductors or components in a humid environ-
ment.
Static discharge can damage any semiconductor component in this instrument.
This instrument contains electrical components that are susceptible to damage
from static discharge. Static voltages of 1kV to 30kV are common in unpro-
tected environments.
Observe the following precautions to avoid damage:
1. Minimize handling of static-sensitive components.
2. Transport and store static-sensitive components or assemblies in their
original containers, on a metal rail, or on conductive foam. Label any
package that contains static-sensitive assemblies or components.
3. Discharge the static voltage from your body by wearing a wrist strap while
handling these components. Servicing static-sensitive assemblies or
components should be performed only at a static-free work station by
qualified personnel.
4. Nothing capable of generating or holding a static charge should be allowed
on the work station surface.
5. Keep the component leads shorted together whenever possible.
6. Pick up components by the body, never by the leads.
7. Do not slide the components over any surface.
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