Tektronix TM 515 User Manual

Maintenance-TM
515
Resistors

A listing of Tektronix Field Offices, Service Centers,
Check the resistors with an ohmmeter .
Resistor

andrepresentativescanbefoundintheTektronixProduct
tolerances are given in the Electrical Parts List in every

Catalog and Supplements .
manual . Resistors
do not normally need to be replaced
unless the measured value varies widely
from the

Repladng Parts
specified value .
The exploded view drawing associated with the
Mechanical Parts List,
located tothe rear
of
most
manuals,
Capacitors

may be especially helpful when disassembling or
A leaky or shorted
capacitor can be detected by

reassembling individual components or sub-assemblies .
checking resistance with an ohmmeter
on
its highest
scale . Use an ohmmeter that will not exceed the voltage

Circuit Boards . If a circuit board is damaged beyond
rating
of the capacitor . The resistance reading should be

repair, the entire assembly, including all soldered-on
high after initial charge
of
the
capacitor . An open

components, can be replaced .
capacitor can best be detected with a capacity meter,
or by
checking whether it passes ac signals .
PARTS ORDERING AND REPLACING
1 . Disconnect all leads connected to the board (both
Obtaining Replacement Parts

soldered lead connections and solderless
pin
connec-
Most electrical and mechanical parts can be obtained

lions) .
through your local Tektronix field office or representative .
However, you should be able to obtain many of the

2 . Remove all screws holding the board to the chassis
standard electronic components from a local commercial

or other
mounting surface .
Some
boards may be held fast
source in your area . Before you purchase or order a part

by
plastic mounting clips around the board edges . For
from a source otherthan Tektronix, Inc ., please check the

these, push the mounting clips awayfr'om the circuit board
electrical parts list for the proper value, rating, tolerance,

edges to free the board . Also, remove
any
knobs, etc ., that
and
description
.

would prevent the
board from being lifted out of the
i nstrument .
Special Parts . Some parts are manufactured or selec-
ted by Tektronix, Inc
., to
satisfy particular
requirements,
or are manufactured for Tektronix, Inc ., to meet our
specifications
. Most of the mechanical parts used in this
system have been manufactured by Tektronix, Inc . Order
all special parts directly from the local Tektronix Field
Office or representative .
Ordering Procedure . When ordering replacement
parts
from Tektronix,
Inc ., please include the following
minimum information :
3~
1 .
Instrument Type (PS 501, SG 502, DC 501, etc .) .
2 . Instrument Serial Number (for example,
8010251)
.
3 . A description of the
part
(if electrical,
include the
circuit number) .
To remove or replace a board,
proceed as follows :
3 .

Lift the circuit board out of the unit . Do not force or
bend the board .
4 .
To
replace the board, reversethe order of removal .
Use care when replacing pin connectors . If forced into
place incorrectly positioned, the pin connectors may be
damaged .
Transistors and IC's . Transistors and IC's should not
be replaced unless they are actually defective . If removed
from
their
sockets during routine maintenance, return
them to their original sockets . Unnecessary replacement
or switching of semiconductor devices may affect the
calibration of the instruments .
When
a
transistor
is
replaced, check the operation of the part of the instrument
that may be affected .
Replacement semiconductors should be of the original
4 . Tektronix part number .

type or a direct replacement . Figure 3-2 shows the lead
configurations of the semiconductors used in this instru-
ment system . When removing soldered-in transistors, use
Please do not return any instruments or parts before

a suction-type desoldering
tool to remove the solder from
receiving
directions from Tektronix,
Inc
.

the holes in the circuit board .
@ JAN 1980

Tektronix TM 515 Specifications

General

Brand	Tektronix
Model	TM 515
Category	Power Supply
Language	English