TM 11-6625-3145-14
DIAGRAMS AND 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.
Active low signals are indicated by an (L) following the
signal name or by a horizontal line above the signal
name (e.g., IRQ). Signal names without indicators are
considered active-high. Some active-high signals are
indicated by an (H) following the signal name.
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
(
µ
/
F).
Resistors =
Ohms (
Ω
).
The information and special symbols below may appear in this manual.
Assembly Numbers and Grid Coordinates
Each assembly in the instrument is assigned an
assembly number (e.g., A20). The assembly number
appears on the circuit board outline on the diagram, in
the title for the circuit board component location
illustration, and in the lookup table for the schematic
diagram and corresponding component locator
illustration. The Replaceable Parts list is arranged by
assemblies in numerical sequence; the components are
listed by component number *(see following illustration
for constructing a component number).
The schematic diagram and circuit board component
location illustration have grids. A lookup table with the
grid coordinates is provided for ease of locating the
component. Only the components illustrated on the
facing diagram are listed in the lookup table. When
more than one schematic diagram is used to illustrate
the circuitry on a circuit board, the circuit board
illustration may only appear opposite the first diagram on
which it was illustrated; the lookup table will list the
diagram number of other diagrams that the circuitry of
the circuit board appears on.
9-1
Summary of Contents for 318
Page 119: ...318 VERIFICATION AND ADJUSTMENT PROCEDURES ...
Page 182: ...338 VERIFICATION AND ADJUSTMENT PROCEDURES ...
Page 253: ...318 ___________________ TROUBLESHOOTING TREES ...
Page 344: ...338 TROUBLESHOOTING TREES ...
Page 517: ...TM 11 6625 3145 14 318 338 4434 923 318 Block Diagram ...
Page 518: ...TM 11 6625 3145 14 318 338 4434 924 338 Block Diagram ...
Page 519: ...TM 11 6625 3145 14 318 338 4434 925 318 Acquisition Module Wiring Diagram ...
Page 520: ...TM 11 6625 3145 14 318 338 4434 926 318 338 Mainframe Wiring Diagram ...
Page 521: ...TM 11 6625 3145 14 318 338 4434 926 338 Acquisition Module Wiring Diagram ...
Page 522: ...TM 11 6625 3145 14 318 338 4434 928 Figure 9 1 318 A01 Input A Board Component Locations ...
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Page 528: ...TM 11 6625 3145 14 Figure 9 3 318 338 A03 ACQ Control Board Component Locations ...
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Page 542: ...TM 11 6625 3145 14 Figure 9 8 318 338 A10 CRT Board Component Locations ...
Page 544: ...TM 11 6625 3145 14 Figure 9 9 318 338 A11 Inverter Board component Locations ...
Page 546: ...TM 11 6625 3145 14 Figure 9 10 318 338 A12 Regulator Board Component Locations ...
Page 551: ...TM 11 6625 3145 14 Figure 9 12 338 A01 Input A Board Component Locations ...
Page 553: ...TM 11 6625 3145 14 318 338 SERVICE ...
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Page 555: ...PIN 058584 ...