Tektronix TM 504 User Manual

TM
504
SYSTEM
MAINTENANCE
GENERAL
Introduction
This section of the
manual
is meant
to support the
entire
TM
500 Series family
of modules
with
a
general
coverage
of
the
most commonly-needed
service
information
pertinent
to preventive
maintenance,
troubleshooting,
ordering
parts,
and
replacing
components and
sub-assemblies.
Cabinet Removal
WARNING
Dangerous potentials
exist at several points
through-
out
the
system. When the
system must be operated
with the cabinet removed,
do not touch
exposed
connections or components.
Some
transistors
have
voltages
present on their
cases. Disconnect
power
before cleaning
the
system
or replacing
parts.
Four screws on the
top
secure the cabinet
to
the
TM 504
frame. Remove them
and
lift the
cabinet straight
up.
Do
not
operate
the
system with the
cabinet
removed any
longer than necessary
for troubleshooting
and calibration.
Re-install
the cabinet
to protect the interior
from dust
and
to
remove personnel
shock hazards.
Exterior.
Loose dust
may be
removed
with
a
soft cloth
or a dry brush.
Water and
a
mild
detergent
may
be
used;
however,
abrasive
cleaners
should
not be
used.
Interior.
Cleaning
the interior
of
a
unit
should
precede
calibration
since the
cleaning
processes
could alter
the set-
tings
of
calibration
adjustments.
Use low-velocity
com-
pressed air
to blow off
accumulated
dust. Hardened
dirt
can
be removed
with
a soft, dry brush,
cotton-tipped
swab, or
a
cloth
dampened
In
a solution
of water
and
mild
detergent.
Preventive
Maintenance
Preventive
maintenance
steps performed
on
a
regular
basis will
enhance the
reliability
of the
instrumentation
sys-
tems.
However,
periodic
checks
of
the semiconductors
in
the
absence
of a malfunction
are
not
recommended
as
pre-
ventive
maintenance
measures.
See the
semiconductor
checking
Information
under
Troubleshooting
Techniques,
which follows.
A convenient
time
to perform
preventive
maintenance
is
just before
Instrument
calibration.
Cleaning
Avoid using chemical cleaning
agents which
might
damage plastic parts.
Avoid
chemicals containing
benzene, toluene,
zylene,
acetone, or similar
solvents.
Calibration
To
Insure accurate signal generation
and measurement,
the
performance of
individual units
composing
the
system
should be
checked
periodically. Refer
to the Instruction
Manual for
each
unit
for complete calibration
and
verifi-
cation procedures.
®
8

Tektronix TM 504 Specifications

General

Brand	Tektronix
Model	TM 504
Category	Control Unit
Language	English