Tektronix DSA8300, Service Manual

Page: 86 / 138

Removal and Installation
Electrical Front-End assembly.
You will need 1/4” and 5/16” socket drivers, and
a T-15 driver. You will also need a coaxial cable connector tool, item 12 in
the Required Equipment table, to disconnect the coaxial cables from the d-sub
connectors on the Electrical Front-End circuit board. (See Table 4-1.)
This circuit board and chassis are not customer-replaceable and cannot be ordered
from Tektronix. (See page 4-34,
Acquisition System .)
1. To access the Electrical Front-End Assembly, remove these assemblies:
Trim (all) (See page 4-9.)
Bottom cover (See page 4-10.)
Left and Right covers (See page 4-10.)
Time Base circuit board (See page 4-37.)
Disconnect the cable (Tektronix part number 174-4241-01) from J01 on
the Electrical Front-End board, allowing the clip that holds the cable to
remain in place.
CAUTION.
Do not remove the clip that holds the cable in place. To do so
can cause EMI issues.
2. To remove the Electrical Front-End assembly:
a. Set the instrument with the top down on the work surface and the front
facing you.
b. Read all of the instructions and cautions in the Acquisition System section.
(See page 4-34, Acquisition System .)
c. Remove parts as necessary to access the cable or mechanical part that
you are going to replace. (See Figure 5-6 on page 5-15.) (See Figure 5-8
on page 5-17.)
3. To reinstall the Electrical Front-End assembly: Reverse the steps. Be sure
to connect the front-panel screws properly. (See Figure 4-17.) Refer to the
cable connections table for information about where to connect cables. (See
Table 5-1.)
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