Tektronix 2236, Instruction Manual

Page: 154 / 350

Maintenance— 2236 Service
CORRECTIVE MAINTENANCE
INTRODUCTION
Corrective maintenance consists of component
replacement and instrument repair. This part of the manual
describes special techniques and procedures required to
replace components in this instrument. If it is necessary to
ship your instrument to a Tektronix Service Center for repair
or service, refer to the “Repackaging for Shipment"
instructions at the end of this section.
MAINTENANCE PRECAUTIONS
To reduce the possibility of personal injury or instrument
damage, observe the following precautions.
1. Disconnect the instrument from the ac power input
source before removing or installing components.
2. Use care not to interconnect instrument grounds
which may be at difference potentials (cross grounding).
OBTAINING REPLACEMENT PARTS
Most electrical and mechanical parts can be obtained
through your local Tektronix Field Office or representative.
However, many of the standard electronic components can
usually be obtained from a local commercial source. Before
purchasing or ordering a part from a source other than
Tektronix, Inc., please check the “Replaceable Electrical
Parts’ list (Section 8) for the proper value, rating, tolerance,
and description.
NOTE
Physical size and shape of a component may affect
instrument performance, particularly at high
frequencies. Always use direct-replacement
components, unless it is known that a substitute will
not degrade instrument performance.
Special Parts
In addition to the standard electronic components, some
special parts are used in this instrument. These parts are
manufactured or selected by Tektronix, Inc. to meet specific
performance requirements, or are manufactured for
Tektronix, Inc. in accordance with our specifications. The
various manufacturers can be identified by referring to the
“Cross Index-Mfr Code Number to Manufacturer” at the be­
ginning of the “Replaceable Electrical Parts" list. Most of the
mechanical parts used in this instrument were manufactured
by Tektronix, Inc. Order all special parts directly from your
local Tektronix Field Office or representative.
Ordering Parts
When ordering replacement parts from Tektronix, Inc.,
be sure to include all of the following information:
1. Instrument type (include modification or option
numbers).
2. Instrument serial number.
3. A description of the part (if electrical, include its com­
ponent number).
4. Tektronix part number.
MAINTENANCE AIDS
The maintenance aids listed in Table 6-11 include items
required for performing most of the maintenance procedures
on this instrument. Equivalent products may be substituted
for the examples given, provided their characteristics are
similar.
INTERCONNECTIONS
Pin connectors are used to connect wires to the intercon­
necting pins. They are grouped together and mounted in a
plastic holder and should be removed, reinstalled, or re­
placed as a unit. If an individual wire or connector in the
assembly is faulty, the entire cable assembly should be re­
placed. To provide correct orientation of this multipin con­
nector when it is reconnected to its mating pins, an arrow is
stamped on the circuit board, and a matching arrow is
molded into the plastic housing of the multipin connector.
Be sure these arrows are aligned with each other when the
multipin connector is reinstalled.
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