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General
Information
Introduction
This volume of the Troubleshooting and Repair Manual contains information for the
troubleshooting and repair of the RF Section of the instrument. This information is combined
in service sheets and indexed with tabs for quick reference. Also contained in this volume
are overall troubleshooting information and illustrations of the instrument useful in isolating
failures to the RF or IF-Display Section
Instruments Covered by This Manual
This Troubleshooting and Repair manual contains information for the servicing of all
HP 85660B RF Sections with serial number prefixes of 2410A and above. The assemblies of
the HP 8566AB Retrofit Kit (HP 8566A to HP 8566B Retrofit Kit) are also covered in this
manual. The following HP 85660B RF Sections Options are covered in this manual.
n Option 001
(75fl
Input)
n Option 400 (400 Hz Operation)
n Option 462 (Impulse Bandwidths)
Changes that are made to the HP 85660B after the printing of this manual will be included in
an update supplement.
The HP 85660B RF Section is used with the HP 85662A IF-Display Section as the HP 8566B
Spectrum Analyzer. The HP 85660B RF Section is used with the HP 85662A Option 462
IF-Display Section as the HP 8566B Option 462 Spectrum Analyzer.
Service Sheets
The service sheets in this manual are organized in alphanumeric order and are indexed with
tabs to make it easy to locate a specific service sheet. Each of the service sheets contain the
following information:
w
Circuit Description (where practical)
n Replacement Procedure (where practical)
w
Troubleshooting Hints (where practical)
w
Replaceable Parts List
n Component Location Illustration
w
Parts Identification (where practical)
n Block Diagram (where practical)
General Information 1