Tektronix VITS 200 Instruction Manual page 170

Maintenance
Diagrams
The circuit number and electrical value of each component is shown on the
diagrams. The first page in the Diagrams section explains the schematic
symbols. The Replaceable Electrical Parts List gives a complete description of
each component. Those portions of the circuit that are mounted on circuit boards
or assemblies are enclosed in a heavy border, with the name and assembly
number shown on the border.
NOTE. Check the Change Information section at the rear of the manual for
inserts describing corrections and modifications to the instrument and manual.
Circuit Board Illustrations
Electrical components, connectors, and test points are identified on circuit board
illustrations located on the inside fold of the corresponding circuit diagram or the
back of the preceding diagram.
Assembly and Circuit
The circuit board assemblies are assigned assembly numbers starting with A1.
Numbering Figure 7–2 shows the location of the circuit board assemblies in the instrument.
This illustration also shows the location of chassis-mounted components.
A3
A1
A2
A1A1
Figure 7–2: Circuit Board Assembly Locations.
Circuit boards have been assigned an assembly number so that they may be
ordered from Tektronix, Inc. They are as follows:
7–3
VITS 200