Tektronix 465M User Manual

AIR
FORCE T033A1
-13-496-1
NAVELEX
0969-LP-170-0010
Maintenance Instructions
RETAINER
:
BUSHING
:
/
RECESSED
PORTION OF :
SHAFT
PUSH
:!
SHAFT
•:
RETAINER
BUSHING
:
EXPANDS AS
SHAFT-KNOB
IS REMOVED
Figure
S-9.
Shaft-knob
removal.
(f) Set TIME/DIV to
X-Y. Pull
the
B
TIME/DIV
knob
and rotate fully clockwise. In properly installed,
B
TIME/DIV
should set
to
.05
/js
and
cause A
TIME/DIV
to
set to .2
s.
k. A
AND
B Timing Switch
Disassembly
(Figures
5-10
and
5-11).
0 )
Remove
the VAR shaft
by loosening
its
set screw
at the VAR potentiometer
coupling
with
a 0.050 inch
hex
wrench.
(2)
Remove
the four
screws holding
the switch
and
boards
together. Separate
the
boards, being
careful
that
the
switch doesn't fall
out.
Also, do not
lose the two
plastic
nut retainers.
Do not
touch the switch
contact
wipers
as they
are easily
damaged
or contaminated.
Do not
use
a brush
or swab to clean the
wipers.
Whenever
the
switch
is separated from
the
boards,
it should
be
placed in some
type of
container
for
protection
from
damage
or contamination.
(3)
Clean
the
switch contact
pads
with
a
soft
eraser
(pencil
type).
(5)
Carefully
pull
the
board assembly away from
the
Sweep Board until it just unplugs.
Then pull the board
assembly toward
the
rear of
the module until
the switch
shaft
exits
the
front
panel.
(4)
Clean
the
boards with
isopropyl
alcohol.
(5)
Reassemble
the
switch
as follows:
(a)
Insert
the
switch
shaft
through
the A Timing
Switch
Board from
the
control side
of
the board
and
posi-
tion
the switch
on
the board.
(6)
Reinstall
the
assembly
as
follows:
(a) Guide
the
switch
shaft
through
the
front
panel
opening
and carefully
plug the
board
into
the
Sweep
board.
(b) At
the
switch,
rotate
the
shaft fully
counter-
clockwise,
then
two
positions
clockwise
(.2
ms).
Install
the
plastic
knob
skirt and
tighten
its
set screw.
(c) At
the switch,
rotate
the
A TIME/DIV
shaft
fully
counterclockwise.
At the
knob
end,
rotate
the
B
TIME/DIV
shaft
fully
counterclockwise.
(d)
Install
the
TIME/DIV
knob
such
that
the white
line
points
to the
same
setting
as the
black
bordered
win-
dow
on the
knob
skirt
(pointing
at X-Y).
Tighten
the
set
screws.
A10
B
TIMING
SWITCH BOARD
(e)
At
the
VAR
potentiometer,
rotate
the
VAR
shaft fully
clockwise
into
the
detent.
Install
the
VAR
knob
with the
name
horizontal
and
tighten
the
set
screw.
Figure
5-10.
Horizontal
module board
locator.
5-38

Tektronix 465M Specifications

General

Brand	Tektronix
Model	465M
Category	Test Equipment
Language	English