Tektronix SDA601, Service Manual

Page: 83 / 132

Maintenance
SDA 601 Serial Digital Analyzer 5- 3
Troubleshooting Aids
The following is miscellaneous information about schematics, circuit board
illustrations, component numbering, and assembly numbering.
NOTE
. No repair should be attempted during the warranty period.
The foldout pages at the back of the manual contain block and schematic
diagrams and circuit board illustrations.
The circuit number and electrical value of each component is shown on the
schematic diagrams. The first page in the Diagrams section (Section 7) explains
the schematic symbols and notations found on the diagrams. The Replaceable
Electrical Parts list gives a complete description of each component. Circuit
boards and assemblies are shown with a heavy border, for identification. If the
border does not completely encircle the schematic then that schematic only
portrays part of the circuitry on that board or assembly. The name and assembly
number of the circuit board are shown along the border as well as the serial
number range that the schematic represents.
NOTE
. Check the Change Information section at the rear of the manual for
inserts describing corrections and modifications to the instrument and manual.
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 a preceding diagram.
The circuit board assemblies are assigned assembly numbers starting with A1.
Circuit boards have been assigned an assembly number so that they may be
ordered from Tektronix, Inc. The assembly numbers are as follows:
A1 Main Board Assembly
A2 Keypad Board Assembly
A3 LCD Board Assembly
A4 I/O Board Assembly
The part numbers for ordering these boards are listed first in the Replaceable
Electrical Parts list (EPL), in Section 6.
Foldout Pages
Diagrams
Circuit Board Illustrations
Numbering