CHAPTER FIVE
5.2 PREVENTATIVE MAINTENANCE
This instrument consists of solid-state electronic circuits, which require very little attention. In
general, the equipment will meet its performance requirements without periodic adjustments.
The equipment should be cleaned periodically to prevent accumulations of dust for proper
cooling of the equipment.
a. Wipe the external surfaces of the instrument with a soft damp cloth to remove
dirt, fingerprints, and any other foreign material.
*** CAUTION ***
The polarization plate attached to the surface of the LCD Display panel is easily scratched,
and must be handled with care.
To clean the display surface, dampen a soft cloth slightly with clean water and wipe gently. Do
not use organic solvents such as alcohol.
b. To check the inside of the unit for excessive dust or foreign matter, first remove
the AC Power and then remove the top cover.
c. If the internal component surfaces and/or components have and excessive amount
of dust deposited on them, use a soft brush or low pressure stream of air to
remove any foreign material.
*** CAUTION ***
Do not clean PC boards or small internal components with a stiff brush or solvents since
damage to the circuits may result. A high powered vacuum device cleaner should not be used
on small components.
d. When cleaning is completed replace the cover and reconnect the power. Check
the operation of the unit.
5-2 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
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