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Maintenance
2715 Spectrum Analyzer Service Manual
6-13
Corrective Maintenance
Corrective maintenance consists of component replacement and instrument
repair. Special techniques and procedures that may be required to remove and
replace assemblies or components in this instrument are described here.
Handling Static Sensitive Components. Most semiconductor types, both separately
and in assemblies, are susceptible to damage to static charge, see Table 6--1 on
Page 6--2 for voltage levels. We recommend static sensitive procedures be
followed for all operations involving semiconductor handling.
Obtaining Replacement Parts. All electrical and mechanical parts are available
through your local Tektronix Field Office or representative. The Replaceable
Parts list contains replacement parts ordering information.
Parts orientation and lead dress should be duplicated, because some components
are oriented to reduce interaction between circuits or control circuit characteris-
tics.
Where applicable, an improved part will be substituted when a replacement is
ordered. If the change is complex, your local Field Office or representative will
contact you concerning the change. After repair, the circuits may need recalibra-
tion.
Parts Repair and Return Program. Assemblies containing hybrid circuits or
substrates in a semisealed module, and complex assemblies, such as the 1st LO,
can be returned to Tektronix for repair under the repair and return program.
Tektronix repair centers provide replacement or repair service on major
assemblies as well as the unit. Return the instrument or assembly to your local
Field Office for this service, or contact your local Field Office for repair and
exchange information.
Selected Components. A few components are selected to meet certain parameters
such as temperature compensation, or to center the range of some adjustable
components. The selected components are identified as selectable in the
Replaceable Electrical Parts list. The replaceable parts list description for the
component gives a nominal value. The procedure for selection is explained in the
Maintenance Adjustments.
Replacing Firmware EPROM Devices. Firmware for the microcomputer is
contained in a set of ROMs on the Microprocessor and either GPIB or RS-232
boards. Refer to the Replaceable Electrical Parts list for the versions and part
numbers. Refer to Replacing Transistor and Integrated Circuit for procedure.