Removal and Installation Procedures
6-30
TDS 420A, TDS 430A & TDS 460A Service Manual
8. Reinstallation of cabinet and rear cover:
a. If the EMI gasket was removed, press the EMI gasket back into its
groove at the rear edge of the cabinet. When installing, make sure the
ends of the gasket touch, but do not overlap. (Cut off excess length if
required to prevent overlap.)
b. See step 7 to reinstall the handle assembly if it was removed.
c. Do, in reverse order, steps 3 and 4 to reinstall the cabinet while
observing the following precautions and requirements:
H Take care not to bind or snag the cabinet on internal cabling; redress
cables an necessary.
H When sliding the cabinet onto the oscilloscope, be sure that the ridge
around the rear of the main chassis slides into the groove containing
the EMI gasket on the rear of the cabinet.
H Install the four screws at the rear panel and tighten to 8 inch-lbs
torque before installing the single screw at the left side of the
cabinet. Tighten this screw to 8 inch-lbs.
d. If installing a new rear panel, also do the following:
H Find the appropriate labels for your rear panel.
H Remove the covering from the back of the sticky-back labels, align
them to the rear panel, and press firmly to install.
e. See the procedure Line Fuse and Line Cord to reinstall the line cord,
which completes the oscilloscope reassembly.
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