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Model 5328A
Maintenance
d. Remove the two machine screws that secure the top of the display front panel to the
top of the cast front-panel frame.
e.
Turn the 5328A on its side and remove the two machine screws that secure the bottom
of the display front panel to the bottom of the cast front-panel frame.
f.
Slightly loosen all remaining machine screws along the top of the cast front-panel
frame. This releases the compressive force on the module front panel.
g.
Remove the A16 Display Assembly, with front panel attached, by gently pushing the
assembly from the rear. Note that the display assembly is separated from the A1 Mother-
board during the operation.
h. Using a suitable allen wrench, remove the SAMPLE RATE control knob from the
module.
i.
Remove the nuts that attach the SAMPLE RATE and RESET switches and separate the
front panel from the display assembly.
NOTE
If the FUNCTION or FREQ RESOLUTION switch control knob is
removed or if the associated printed-circuit board switch is disas-
sembled, the knob and switch must be aligned during replacement
as described in the following paragraph.
j.
To realign the display switches with the proper knob positions, set the rear ceramic
wafers with the slots down. Set the knob of the FUNCTION switch to FREQ A and set
the knob of the FREQ RESOLUTION switch to 10
2
(10 kHz). .1 kHz position and tighten
the two set screws on each knob with a suitable allen wrench.
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