Tektronix PSC1125, Instruction Manual

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PSC 1125 Digital Television Parallel-to-Serial Converter Instruction Manual
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Customer Maintenance
Preventive maintenance consists of visually inspecting and cleaning the
converter, and using general care when operating it. How often to do preventive
maintenance depends on the severity of the environment in which the converter
operates.
General Care
The cabinet helps keep dust out of the converter and is a major component of the
instrument cooling system.
Inspect and clean the converter as operating conditions require. The collection of
dirt on components inside can cause them to overheat and break down. (Dirt acts
as an insulating blanket, preventing efficient heat dissipation.) Dirt also provides
an electrical conduction path that can cause an instrument failure, especially
under high-humidity conditions.
Inspection
Inspect the outside of the converter for damage, wear, and missing parts. If the
converter appears to have been dropped or otherwise abused, seek service.
Cleaning
Before cleaning, disconnect the converter from the power source.
To prevent damaging the plastics used in the converter, do not use
abrasive cleaning agents. Use a 75% isopropyl alcohol solution or a general
purpose detergent-and-water solution. Rinse with deionized water. Before using
any other type of cleaner, consult your Tektronix Service Center or representa-
tive.
To avoid potential electric shock hazard or damage to the converter
circuits, do not allow any moisture inside the converter during external cleaning;
use only enough liquid to dampen the cloth or applicator.