Tektronix WFM 601A, Service Manual

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Maintenance
WFM 601A, WFM 601E, & WFM 601M Service Manual
6–3
H
Keep static generating items or items capable of holding a static charge away
from the workstation surface.
H
Keep the component leads shorted together whenever possible.
H
Pick up the components by the body, never by the leads.
H
Always move components by picking them up first, never by sliding them
across a surface.
H
Avoid handling components in areas that have a floor or work surface
covering capable of generating a static charge.
H
Use a soldering iron that is connected to earth ground.
H
Use only antistatic suction or wick-type desoldering tools.
Inspection and Cleaning
Clean the instrument often enough to prevent dust or dirt from accumulating. Dirt
acts as an insulating blanket that prevents effective heat dissipation and can
provide electrical leakage paths between conductors or components in a humid
environment.
CAUTION. Do not allow water to get inside enclosed assemblies or components.
Do not clean plastic materials with organic cleaning solvents, such as benzene,
toluene, xylene, acetone, or similar compounds, because they may damage the
plastic.
Clean the dust from the exterior of the instrument by wiping it with a soft cloth
or small brush. A brush is useful to remove dust from around the buttons, knobs,
and connectors. Remove hardened dirt with a cloth dampened in water contain-
ing a mild detergent. Do not use abrasive cleaners.
Clean the CRT protective shield, light filter, and CRT face with a soft, lint-free
cloth dampened in denatured alcohol.
Clean the interior of the instrument by loosening the accumulated dust with a dry,
soft brush. Once the dirt is loose, remove it with low-pressure air. High-velocity
air can damage parts. Remove hardened dirt or grease with a cotton-tipped
applicator dampened with a solution of mild detergent and water. Abrasive
cleaners should not be used. If the circuit board assemblies must be removed for
cleaning, refer to Removal and Replacement on page 6–5.
Cleaning the Exterior
Cleaning the CRT/Display
Cleaning the Interior