TSG 90
6 – 1
Section 6
Diagrams/Circuit Board Illustrations
Symbols
Graphic symbols and class designation letters are based on ANSI Standard
Y32.2–1975.
Logic symbology is based on ANSI Y32.14–1973 in terms of positive logic.
Logic symbols depict the logic function performed and may differ from the
manufacturer’s data.
Overline, parenthesis, or leading slash indicate a low asserting state.
Example: ID CONTROL, (ID CONTROL), or /ID CONTROL.
Abbreviations are based on ANSI Y1.1–1972.
Other ANSI standards that are used in the preparation of diagrams by Tektronix,
Inc. are:
Y14.15, 1966 — Drafting Practices.
Y14.2, 1973 — Line Conventions and Lettering.
Y10.5, 1968 — Letter Symbols for Quantities Used in Electrical
Science and Electrical Engineering.
American National Standard Institute
1430 Broadway, New York, New York 10018
Component Values
Electrical components shown on the diagrams are in the following units unless
noted otherwise:
Capacitors
Values one or greater are in picofarads (pF).
Values less than one are in microfarads (
m
F).
Resistors
Ohms (
W
).
Summary of Contents for TSG 90 PATHFINDER
Page 4: ...ii TSG 90 PATHFINDER Service Manual...
Page 10: ...viii TSG 90 PATHFINDER Service Manual...
Page 11: ...Specifications...
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Page 29: ...Specifications TSG 90 PATHFINDER Service Manual 1 17 Figure 1 16 Safe Area...
Page 30: ...1 18 TSG 90 PATHFINDER Service Manual...
Page 31: ...Operating Information...
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Page 38: ...Operating Information 2 6 TSG 90 PATHFINDER Service Manual...
Page 39: ...Performance Verification and Adjustment Procedures...
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Page 53: ...Maintenance...
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Page 62: ...4 8 TSG 90 PATHFINDER Service Manual...
Page 63: ...Replaceable Electrical Parts...
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Page 75: ...Diagrams Circuit Board Illustrations...
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Page 79: ...Diagrams Circuit Board Illustrations TSG 90 6 3 TSG 90 Block Diagram...
Page 81: ...0 0 0 0 0 0 0 0 0 0 4 2 4 2 0 0 0 0 0 2 3 0 1 0 TSG 90 KEY BOARD 1 2 A2...
Page 83: ...TSG 90 CPU CLOCK TIMING DIGITAL AND ID GENERATION 1 A1...
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Page 87: ...Replaceable Mechanical Parts...
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Page 93: ...TSG 90 PATHFINDER Service Manual 7 5 A1 A2 FIG 1 EXPLODED VIEW A3...