Removal and Installation Procedures
6-24
TDS 420A, TDS 430A & TDS 460A Service Manual
2. Orient the oscilloscope: Set the oscilloscope so its bottom is down on the
work surface and its front is facing you.
3. Remove the knob(s): Refer to F igure 6--6 while doing the following
substeps.
a. Grasp any knob you wish to remove and pull it straight out from the
front panel slightly to create some clearance between the base of the
knob and the front panel.
b. Insert the tweezers between the knob and front panel and use them to
remove the knob and its shaft.
4. Disassemble the knob and shaft: Pull the shaft out of the knob.
5. Reinstallation:
a. To reinstall, align the inside of the knob to the end of the shaft and push
it in until it snaps.
b. Insert the shaft of the assembled knob into its hole in the front panel
assembly until it stops.
c. Rotate the knob while lightly pushing inwards until the shaft slips into
its receptacle. Push the knob all the way in to seat the knob assembly.
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