Tektronix DSA8300, Service Manual

Page: 57 / 138

Removal and Installation
Trim and Carrying Handle You will need a T-15 Torx driver and a T-20 Torx driver.
1. To remove the top cover trim:
a. Remove the accessory pouch; it snaps off. (See Figure 4-1 on page 4-6.)
b. Remove the four T-15 Torx drive screws that attach the top cover trim to
the instrument. The T-15 Torx drive screws also attach the snap studs to
the top cover. (See Figure 5-1 on page 5-5.)
c. Hold the back of the top cover trim and swing it upward and toward you
to release it from the front panel trim.
d. Pull the front cover trim away from you and remove it from the instrument.
2. To remove the carrying handle and the right and left side trim panels:
a. Remove the two T-20 Torx drive screws that attach the handle to the
instrument. Remove the handle from the instrument.
b. Slide the side trim panels toward the rear of the instrument allowing the
tabs to clear the cover openings, then pull out to remove the panels from
the instrument.
3. To remove the front panel trim:
a. Hold the trim ring by its top edge and pull toward you to detach the three
plastic snaps. (Alternatively, you can use a
fl at-bladed screwdriver or
other small prying tool to help you detach the snaps.)
b. Swing the bottom of the ring up and off the front panel.
4. To remove the acquisition trim:
a. Remove the six T-15 Torx drive screws that attach the acquisition trim to
the instrument. (See Figure 5-1 on page 5-5.)
b. Remove the knobs from the electrical and optical ejector levers (hold the
knobs with your
fi ngers and pull straight out). (See Figure 4-19.)
c. Remove the acquisition trim from the instrument.
CAUTION.
Over-tightening the handle screws may cause the handle to break off
from the cabinet. Use a torque wrench to tighten the screws to 8-10 in.lb.
5. To reinstall the covers and handle: Reverse the steps. Use a torque wrench to
tighten the handle screws to 8–10 in. lb.
DSA8300 Digital Serial Analyzer and Modules Service Manual 4–9