HP 35601A Operating And Service Manual page 55

Model 35601A
Service
SECTION VI
SERVICE
6-1. INTRODUCTION
This section contains the information necessary to test, troubleshoot, and repair the -hp-
35601A Spectrum Analyzer Interface of the -hp- 3047A Spectrum Analyzer System. Includ­
ed in this section are the following topics: Introduction, Safety Considerations, Equipment
Required, Automatic Testing and Adjustments, Controlling the -hp- 3560IA, and Service
Groups.
The information in this section is used in conjunction with the -hp-35601A test program.
The -hp-35601 A test program is a combination of test and adjustments which test various
signal paths in the -hp-35601 A. For each test in the -hp-35601 A test program, there is a sec­
tion in this manual that contains a block diagram of the circuit path under test and addi­
tional information on the test procedures.
System specifications are verified by running the Performance Tests found in the -hp- 347
Reference Manual;
It is only necessary to run the -hp-35601 A test program if a -hp-35601 A failure is indicated
by the -hp-3047A System check program. Once a problem is indicated by the -hp-3047A
System check program, the complete set of -hp-35601A test may be run sequentially to
isolate the problem to a small functional circuit, or the technician may verify a suspected
problem by running a selected test.
A troubleshooting aid of the -hp-35601A test program is the -hp- 35601A control sub­
program "SWITCH". "SWITCH" is used in conjunction with a computer to control the
various switches and relays in the -hp- 35601 A. Any configuration of signal paths may be
created using this ability.
Six Service Groups comprise the circuit documentation for the -hp- 35601A. Each Service
Group consists of the following: schematics, component locators, schematic notes, and a
theory of operation.
6 2. SAFETY CONSIDERATIONS
The System Interface is a Safety Class I instrument and has been designed according to inter­
national safety standards. To ensure safe operation and to retain the instrument in a safe
condition, the Operating and Service Manual contains information, cautions and warnings
which must be adhered to by the user.
NOTE
See the Safety Summary following the Table of Contents of this
manual for a discussion of basic safety precautions and safety
symbology.
The 35601A front panel contains a ^ symbol which is an international symbol meaning
"refer to the Operating and Service Manual". The symbol flags important operating in­
structions located in Section III required to prevent damage to the instrument. To ensure the
safety of the operating and maintenance personnel and to retain the operating condition of
the instrument, these instructions must be adhered to.