Mainframe service overview
This section contains the information needed to do periodic a nd corrective
maintenance on the TG8000 mainframe. Service information for each of the
available ge
nerator, genlock, or GPS modules follows this section.
Before servicing the
mainframe
Before servicing this instrument, review the following information:
Service preparation describes how to prepare to service the instrument. (See
page 1-4.)
Inspection and cleaning describes how to inspect for dirt and damage and how
to clean the exterior and interior of the instrument. (See page 1-6.)
Module installation and removal describes how to install or remove a
generator, genlock, GPS, or Power Supply module from the TG8000
mainframe. (See page 1-10.)
Mainfr
ame service
information
The service information for the TG8000 mainframe is divided into the following
subsections:
Mainframe clock adjustment addresses after repair adjustment and the interval
between periodic adjustments. It contains a procedure for adjusting the master
clock frequency of the TG8000 mainframe. (See page 2-2.)
Mainframe theory of operation contains a circuit description at the module or
block level. (See page 2-7.)
Mainframe diagrams contains a block diagram using individual modules
as blocks and an interconnect diagram showing connections between the
modules. (See page 2-9.)
Mainframe troubleshooting contains information for isolating and
troubleshooting failed modules. Included are instructions for operating
the TG8000 internal diagnostic routines and troubleshooting trees. (See
page 2-10, Mainframe troubleshooting.)
Mainframe removal and installation procedures contains procedures for the
removal of defective modules and replacement of new or repaired modules.
(See page 2-19.)
Mainframe replaceable parts list lists all of the field replaceable modules in
the TG8000 mainframe by part number. (See page 2-35.)
TG8000 Multiformat Test Signal Generator Service Manual 2–1
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