Preventive Maintenance; Introduction; General Care; Inspection And Cleaning - Tektronix 2205 Service Manual

Maintenance—2205 Service
7. Do not slide the components over any
surface.
8. Avoid handling components in areas that
have a floor or work-surface covering capable of
generating a static charge.

INTRODUCTION

Preventive maintenance consists of cleaning,
visual inspection, and checking instrument per­
formance. When performed
prevent instrument malfunction and enhance instru­
ment reliability. The severity of the environment in
which the , instrument is used determines the
required frequency of maintenance. An appropriate
time to accomplish preventive maintenance is just
before instrument adjustment.

GENERAL CARE

The cabinet minimizes accumulation of dust
inside the instrument and should normally be in
place when operating the oscilloscope.The optional
front cover for the instrument provides both dust
and damage protection for the front panel and crt.
Whenever the instrument is stored or is being trans­
ported. the front cover should be used.
AAAAAAIVV)
k
$ CAUTION I
*v v v w v w , v , «
Do not use chemical cleaning agents that
might damage the plastics used in this instru­
ment. Use a nonresidue-type cleaner, pre­
ferably isopropyl alcohol or a solution of 1%
mild detergent with 99% water. Before using
any other type of cleaner, consult your
Tektronix Service Center or representative.

INSPECTION AND CLEANING

The instrument should be inspected and cleaned as
often as operating conditions require. Accumulation
of dust in the instrument can cause overheating and
component breakdown. Dust on components acts
as an insulating blanket, preventing efficient heat
dissipation, it also provides an electrical conduction

PREVENTIVE MAINTENANCE

regularly, it may
.......
9. Use ";a soldering iron that is connected to
earth ground.
10. Use only approved antistatic, vacuum-type
desoldering tools for component removal.
path that could result in instrument failure, especially
under high-humidity conditions.
Exterior
INSPECTION. Inspect the external portions of the
instrument for damage, wear* and missing parts;
use Table 6-2 as a guide. Instruments that appear to
have been dropped or otherwise abused should be
checked thoroughly to verify correct operation and
performance. Any problems found that could cause
personal injury or could lead to further damage to
the instrument should be repaired immediately.
CAUTION
Do not allow moisture to get inside the instru­
ment during external cleaning. Use only
enough liquid to dampen the cloth or
applicator.
CL.EANINO. Loose dust on the outside of the
instrument can be removed with a soft cloth or small
soft-bristle brush. The brush is particularly useful for
dislodging dirt on and around the controls and con­
nectors. Dirt that remains can be removed with a
soft cloth dampened in a mild detergent-and-water
solution. Do not use abrasive cleaners.
A plastic light filter is provided with the oscil­
loscope. Clean the light filter and the crt face with a
soft lint-free cloth dampened with either isopropyl
alcohol or a mild detergent-and-water solution.
Interior
To gain access to internal portions of the instru­
ment for inspection and cleaning, refer to the
Removal and Replacement Instructions in the Cor­
rective Maintenance part of this section.