Tektronix DSA8300, Service Manual

Page: 85 / 138

Removal and Installation
Time Base circuit board.
You will need a T-15 Torx driver and a 5/16 nut driver.
The Time Base circuit board is not customer-replaceable and cannot be ordered
from Tektronix. (See page 4-34,
Acquisition System .)
1. To access the Time Base circuit board, remove these assemblies:
Trim (all) (See page 4-9.)
Bottom cover (See page 4-10.)
Left and Right covers (See page 4-10.)
2. To remove the Time Base circuit board: (See Figure 4-16 on page 4-35.)
a. Set the instrument with the top down on the work surface and the
instrument bottom 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 5-7 on page 5-16.)
(See Figure 5-8 on page 5-17.)
(See Figure 5-9 on page 5-18.)
3. To reinstall the Time Base 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.)
DSA8300 Digital Serial Analyzer and Modules Service Manual 4–37