Inspection And Cleaning; General Care - Sony Tektronix AWG2021 Service Manual

Maintenance

Inspection and Cleaning

General Care

Inspection and Cleaning
Procedures
6-4
This subsection describes how to determine whether the AWG2021 needs
cleaning, and how to do the cleaning. Inspection and cleaning are preventive
maintenance procedures. When done regularly, preventive maintenance may
prevent AWG2021 malfunction and enhance reliability.
Preventive maintenance consists of visually inspecting and cleaning the
AWG2021, and using general care when operating it.
How often to do maintenance depends on the severity of the environment in
which the AWG2021 operates. A proper time to perform preventive maintenance
is just before doing the internal adjustments described in section 5, Adjustment
Procedures.
The cabinet helps keep dust out of the AWG2021 and is a major component of
the instrument cooling system. The cabinet should normally be in place when
operating the AWG2021. The AWG2021 front cover (optional accessory)
protects the front panel and display from dust and damage. Install it when storing
or transporting the instrument.
Inspect and clean the AWG2021 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.
WARNING. To avoid personal injury or death due to electric shock, unplug the
power cord from the line voltage source before cleaning the AWG2021.
CAUTION. To prevent damaging the plastics used in the AWG2021, do not use
chemical cleaning agents. Use only deionized water when cleaning the menu
buttons or front-panel buttons. Use a 75% isopropyl alcohol solution as a
cleaner, and rinse with deionized water. Before using any other type of cleaner,
consult your Tektronix Service Center or representative.
To prevent damaging AWG2021 components, do not use high-pressure com-
pressed air when cleaning dust from the interior of the AWG2021. (High
pressure air can cause electrostatic discharge.) Instead, use low pressure
compressed air (about 9 psi).
AWG2021 Service Manual