Tektronix 070-9778-03, Руководство по обслуживанию

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Maintenance
6–2
TLA 711 Color Benchtop Controller Service Manual
Preventing ESD
When performing any service which requires internal access to the benchtop
controller, adhere to the following precautions to avoid damaging internal circuit
boards and their components due to electrostatic discharge (ESD).
CAUTION.
Static discharge can damage any semiconductor component in this
benchtop controller
1. Minimize handling of static-sensitive circuit boards.
2. Transport and store static-sensitive circuit boards 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 circuit boards. Perform service of static-sen-
sitive circuit boards 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 circuit boards over any surface.
7. Avoid handling circuit boards in areas that have a floor or work-surface
covering capable of generating a static charge.
WARNING.
To avoid electric shock, always power off the chassis and disconnect
the power cord before cleaning or servicing the chassis.
Inspection and Cleaning
The benchtop controller is inspected mechanically and electrically before
shipment. It should be free of marks or scratches and should meet or exceed all
electrical specifications. To confirm this, inspect for physical damage incurred
during transit. Retain the packaging in case shipment for repair is necessary. If
there is damage or deficiency, contact your local Tektronix representative.