Tektronix 496 Instruction Manual page 7

Replacement parts are available from or through your local Only the circuit number will appear an the diagrams and
Tektronix, Inc. Field Office or representative .
circuit board illustrations . Each diagram and circuit board
illustration is clearly marked with the assembly number .
Changes tp Tektronix instruments are sometimes made to Assembly numbers are also marked on the mechanical exploded
accommodate improved components as they become available,
views located in the Mechanical Parts List. The component
and to give you the benefit of the latest circuit improvements
number is obtained by adding the assembly number prefix to the
developed in our engineering department- It is therefore impor-
circuit number .
tant, when ordering parts, to include thefollowing information in
your order: Part number, instrument type or number, serial The Electrical Parts List is divided and arranged by
number, and modification number if applicable . assemblies in numerical sequence {e-g ., assembly A1 with its
subassemblies and parts, precedes assembly A2 with its sub-
If a part you have ordered has been replaced with a new or assemblies and partsJ .
improved part, your local Tektronix, Inc . Field Officeorrepresen-
tative will contact you concerning any change in part number .
Chassis-mounted parts have no assembly number prefix
and are located at the end of the Electrical Parts List .
Change information, if any, is located at the rear of this
manual .
LIST OF ASSEMBLIES
A list of assemblies can be found at the beginning of the
Electrical Parts List . The assemblies are listed in numerical order.
Indicates part number to be used when ordering replace
Whenthecompletecomponentnumberofapartisknown,this list
ment part from Tektronix.
will identify the assembly in which the part is located.
CROSS INDEX-MFR. CODE NUMBER TO
MANUFACTURER
The Mtr. Code Number to Manufacturer index for the
Electrical Parts List is located immediately after this page . The
Crass index provides codes, names and addresses of manufac-
turers of components listed in the Electrical Parts List
ABBREVIATIONS
Abbreviations conform taAmerican National Standard Y1 .1 .
COMPONENT NUMBER (column one of the
Electrical Parts List}
A numbering method has been used to identify assemblies,
subassemblies and parts. Examples of this numbering method
and typical expansions are illustrated by the following:
REPLACEABLE
ELECTRICAL PARTS
PARTS ORDERING INFORMATION
TEKTRONIX PART NO. (column two of the
Electrical Parts List)
SERIALIMODEL NO. (columns three and lour
of the Electrical Parts List)
Column three (3J indicates the serial number at which the
part was first used . Column four (4) indicatestheserial number at
which the part was removed. No serial number entered indicates
part is good for all serial numbers.
NAME & DESCRIPTION (column five of the
Electrical Parts List)
In the Parts List, an Item Name is separated from the
description by a colon {:J . Because of space limitations, an Item
Name may sometimes appear as incomplete . For further Item
Name identification, the U .S . Federal Cataloging Handbook Hfi-1
can be utilized where possible.
Example a.
component number
A23R1234
A2~ R~4
MFR . CODE {column six of the Electrical Parts
Assembly number Circuit number
LISt}
Read: Reslator 1234
0l
Assembly 23
Example b. component number
A23A2R1234 A23 A2 A1234
Assembly subassembly Circuit
number number number
Section T-4961496P Service Vol. 2
Indicates the code number of the actual manufacturer of the
part . (Code to name and address cross reference can be found
immediately after this page .)
MFR. PART NUMBER (column seven of the
Electrical Parts Llst)
Read : Resistor 1234 of Subassembly 2 of Assembly 23 Indicates actual manufacturers Bart number .
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