Maintenance
ECO 422
7–5
Use successive electrical checks to locate the source of the problem. The primary
tool for the problem isolation is the oscilloscope. Use the Performance Verifica-
tion procedure to determine if a circuit is operating within specifications. At
times, it may be necessary to change a calibration adjustment to determine if a
circuit if operational, but since this can destroy instrument calibration, care
should be exercised. Before changing an adjustment, note its position so that it
can be returned to its original setting.
Determine the extent of the repair. If the necessary repair is complex, it may be
advisable to contact your local Tektronix field office or representative before
continuing. If the repair is minor, such as replacing a component, see the parts
list for replacement information. Removal and replacement procedures for the
assemblies can be found in this section.
CAUTION.
Always remove the assembly from the instrument, prior to attempting
to replace a solder-in component. See this section for the correct procedure.
Tektronix Service Offerings
Tektronix maintains a service organization that can provide a number of services
to assist in maintaining instrument operation at its specified levels. They range
from complete repair and adjustment, at a convenient location, to supplying
replacement parts. In addition, there are training programs that are available for
service technicians.
NOTE
. When considering which service offerings best suit the current need,
remember that Tektronix provides a limited parts and service warranty for all its
products. No customer repairs should be attempted during the warranty period.
Tektronix provides service training in a number of programs. In addition to
classes held at our Beaverton campus, special classes at convenient locations can
be arranged. To find out more about service training programs, contact your local
Tektronix field office or representative. US Customers can call our service
organization directly using 1-800-TEK-WIDE (835-9433) and ask for “Service
Training.” The 800 number is a 24-hour service, but service training specialists
are only available between 8 am and 4 pm pacific coast time.
Tektronix maintains service centers worldwide. These centers provide repair and
calibration services for Tektronix instruments. They can be contacted through
your Tektronix field office or representative. In addition, US and Canadian
Service Training
Field Service Centers
Summary of Contents for ECO 422
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Page 14: ...General Safety Summary viii ECO 422 ...
Page 16: ...Service Safety Summary x ECO 422 ...
Page 17: ...Getting Started ...
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Page 31: ...Operating Basics ...
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Page 41: ...Operating Basics ECO 422 2 9 Figure 2 6 Setup for Adjusting R265 the User Level for SX 7 ...
Page 43: ...Specifications ...
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Page 53: ...Theory of Operation ...
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Page 62: ...Theory of Operation 4 8 ECO 422 ...
Page 63: ...Performance Verification ...
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Page 85: ...Adjustment Procedure ...
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Page 89: ...Maintenance ...
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Page 101: ...Options ...
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Page 105: ...Replaceable Electrical Parts ...
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Page 147: ... ECO 422 Changeover Unit FRONT PANEL 1 ...
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Page 176: ...ECO 422 A1 FIG 1 EXPLODED VIEW A2 A3 A4 ...
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