System
Maintenance—
TM
504
PARTS ORDERING
AND
REPLACING
Ordering
Standard Parts.
All electrical and
mechanical
replacement
parts can be
obtained
through the
local Tektronix
Field
Office or
representative.
However, many of
the standard
electronic
components can be
obtained
locally In less time
than Is required to order
them
from Tektronix,
Inc. Before
purchasing or
ordering
replacement parts,
check
the
Parts
Lists
for
value, tolerance,
rating, and
description.
When
selecting
replacement
parts,
it is
important
to
remember
that the physical
size and
shape of the
component
may
affect its
performance
In
an
instrument. All replacement
parts should be
direct
replacements
unless it is known that
a
different component
will not
adversely affect
the Instru-
ment
performance.
Special
Parts.
Some
parts are
manufactured or
selected
by
Tektronix,
Inc.,
to
satisfy
particular
requirements,
or
are
manufactured
for
Tektronix, Inc., to
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
repre-
sentive.
Ordering Procedure.
When ordering
replacement parts
from Tektronix,
Inc.,
please include the
following mini-
mum
information:
1
.
Instrument
Type (PS
501
,
SG
502,
DC
501
,
etc.)
2. Instrument Serial Number (For
example,
B010251)
3. A
description of the part
(if electrical, include the
circuit number)
4.
Tektronix part number
Please
do
not
return
any
instruments or parts
before
receiving
directions
from
Tektronix, Inc.
A
listing
of
Tektronix
Field Offices, Service
Centers, and
Representatives can be
found in the
Tektronix Product
Catalog
and
Supplements.
Replacing
The exploded
view drawings associated
with the
Mechan-
ical Parts List,
located to
the rear of
most
manuals,
may
be
especially
helpful when disassembling or
reassembling in-
dividual
components or
sub-assemblies.
Circuit
Boards. If
a
circuit board
is
damaged beyond
repair, the
entire assembly,
including all soldered-on
com-
ponents, can be
replaced.
To
remove or
replace
a
board,
proceed as follows:
1.
Disconnect all leads
connected
to
the
board (both
soldered lead
connections
and
solderless pin
connections).
2. Remove
all
screws
holding the board to
the chassis
or
other
mounting
surface. Some
boards may
be held fast by
plastic
mounting
clips around
the
board edges. For
these
push the
mounting
clips
away
from the
circuit
board edges
to
free the board. Also,
remove
any
knobs,
etc., that would
prevent the board
from being
lifted
out
of the instrument.
3.
Lift the circuit board out
of the
unit.
Do not
force or
bend the board.
4.
To
replace
the
board,
reverse the
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
cali-
bration of the
instruments.
When
a
transistor
is replaced,
check the
operation of
the part of
the
instrument that may
be
affected.
11
REV.
B,
MAR.
1975
To Next Page
Loading...
Need help?
General
