Tektronix TM 503 User Manual

TM 503
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 Removai
WARKING
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.
Two screws on the top secure the cabinet to the TM
503 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,
Cleaning
pee
> CAUTION i
thal
Avoid using chemical cleaning agents which might
damage plastic parts. Avoid chemicals containing
benzene, toluene, zylene, acetone, or similar solvents.
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
settings of calibration adjustments. Use jow-velocity
compressed 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
system. However, periodic checks of the semiconductors in
the absence of a malfunction are not recommended as
preventive maintenance measures. See the semiconductor
checking information under Troubleshooting Techniques
which follow. A convenient time to perform preventive
maintenance is just before instrument calibration.
Calibration
To insure accurate signal generation and measurement,
the performance of individual units comprising the system
should be checked periodically. Refer to the Instruction
Manual for each unit for complete calibration and verifica-
tion procedures,

Tektronix TM 503 Specifications

General

Brand	Tektronix
Model	TM 503
Category	Control Unit
Language	English