Removal
and
Installation
Procedures
Step 5. Remove two screws from the bezel at the front of
the
instrument.
Step
6.
Pull the
CRT
forward together with the shield and remove it from
thechassis.
Step 7.
To
reinstall the
CRT
reverse the above procedure, being careful to
check the shield positioning slot is
in
the correct (left side) loca-
tion. The deflection plate leads color code should
be
in
ascending
order from bottom-right to top-left.
Front Panel Board
Step 1. Remove the cabinet as described
in
the "Cabinet" procedure.
Step
2.
Remove the storage board
as
described in the "Storage Board"
procedure.
Step
3.
Remove the screw at
the
top-right holding the right chassis
bracket to the front panel chassis.
Step 4. Pull the focus potentiometer extension shaft forward and remove
it from the instrument.
Step 5. Remove six screws holding the front panel board to the front
panel.
Step
6.
Remove the knob from the cursor POSITION potentiometer.
Step 7. Pull
the
two VOLTS/DIV and one SEC/DIV knob forward
and
remove them from the shaft.
Step
8.
Pull the six potentiometer knobs forward, by placing a soft screw-
driver between the front panel and the knob, and remove from the
front panel. (Take care not to damage the front panel)
Step
9.
Lift
the front panel board a little, move it backward and remove it
from
the chassis.
Step
10.
To
reinstall the front-panel board reverse the above procedure.
Make sure that all push-button knobs are perpendicular to
the
board before placing the board back into the chassis. When trying
to get the push-buttons through their respective holes guide
the
knobs with a sharp
pin
from front through the panel and work
from
the bottom row
up
to the top row. Make sure to mount first
the potentiometer knobs,
(for
correct alignment of
the
board),
before fastening the screws.
6-
14
Maintenance
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