6-11
Special Parts
In addition to the standard electronic components,
many special parts are used in the 2430. These com-
ponents are manufactured or selected by Tektronix, Inc. to
meet specific performance requirements, or are manufac-
tured 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 beginning of the "Replaceable Elec-
trical 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.
Physical size and shape of a component may affect
instrument performance, particularly at high frequen-
cies. Always use direct-replacement components,
unless it is known that a substitute will not degrade
instrument performance.
NOTE
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 Elec-
trical Parts" list for the proper value, rating, tolerance, and
description.
OBTAINING REPLACEMENT PARTS
5. Use an isolation transformer to supply power to the
2430 if removing the shield and troubleshooting in the
power supply.
4. When soldering on circuit boards or small insulated
wires, use only a 15-watt, pencil-type soldering iron.
3. Use care not to interconnect instrument grounds
which may be at different potentials (cross grounding).
2. Ve rify
that the line-rectifier filter capacitors are
discharged prior to performing any servicing.
1. Disconnect the instrument from the ac-power source
before removing or installing components.
To reduce the possibility of personal injury or instru-
ment damage, observe the following precautions:
MAINTENANCE PRECAUTIONS
Corrective maintenance consists of component replace-
ment 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"
information in Section 2 of this manual.
INTRODUCTION
CORRECTIVE MAINTENANCE
12. Repair and Adjust the Circuit
If any defective parts are located, follow the replace-
ment procedures given under "Corrective Maintenance" in
this section. Atter any electrical component has been
replaced, the performance of that circuit and any other
closely related circuit should be checked. If work has been
done on the power supplies, a complete check of the regu-
lated voltages should be done to verify that the supply
voltages are in tolerance. A check of the Display
ADJUSTS calibration and a SELF CAL should verify that
the instrument meets Performance Requirements if the
voltages are all correct.
Maintenance-2430 Service
To accurately check components, it is otten necessary
to remove or partially disconnect the component from the
circuit board, in order to isolate it from surrounding cir-
cuitry. Partial specifications (resistor tolerance, transistor
type, etc.) for most components can be found by referenc-
ing the component designation number in the "Replace-
able Electrical Parts." Also see Figure 9-1 for component
value identification and Figure 9-2 for semiconductor lead
configurations.
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