Tektronix RSA3408B, Service Manual

Page: 181 / 250

Removal and Installation Procedures
RSA3408B Analyzer Service Manual
5- 53
3. Remove the step attenuator:
a. Unplug the cable at J200 on the A100 Cal generator board, if not yet.
b. Using a
5
@
16
inch wrench, disconnect the SMA cable W121 from the
step attenuator.
c. Remove the four screws securing the attenuator plate to the main chassis.
d. Using a
5
@
16
inch wrench, disconnect the SMA cable W120 from the
step attenuator.
e. Lift up the step attenuator with the plate.
f. Remove the two screws securing the step attenuator to the plate.
4. Reinstallation: Reverse step 3 to reinstall the step attenuator.
1. Assemble equipment and locate module to be removed:
a.
You will need a screwdriver with Phillips #1, #2, and No 2. Pozidriv tips
(Items 1, 2, 3, and 4), a SMA torque driver with a long type bit (Items 6
and 7), and a
5
@
16
inch wrench (Item 13).
b.
Locate the modules in the locator diagram Bottom modules -- RF1 ,
Figure 5--8 on page 5--18.
2. Orient the analyzer: Set the analyzer so its top is down on the work surface
and its front is facing you.
3. Remove the cables on the A100 Cal generator board (refer to the A100 Cal
Generator Board
procedure on page 5--51).
See Figure 5--27 for the following steps 4 through 6. Also see Figure 5--38 on
page 5--76 for cable interconnection.
4. Remove the band relay:
a.
Using a #1 Phillips screwdriver, remove the two screws securing the
band relay to the bracket.
b.
Using a
5
@
16
inch wrench, disconnect the SMA cables W121, W123, and
W124 from the band relay.
c. Disconnect the cable W114A from the band relay.
Input Relay, Band Relay,
and Bandpass Filter (YTF)