Tektronix RSA3300A, Service Manual

Page: 200 / 284

Removal and Installation Procedures
6- 54
RSA3303A & RSA3308A Service Manual
4. Remove the step attenuator 1:
a. Using a
5
@
16
inch wrench, disconnect the SMA cable W108 on the step
attenuator 1 and 2, if not yet.
b. Unplug the cable W116 on the step attenuator 1.
c. Remove the four screws securing the attenuator to the main chassis.
d. Using a
5
@
16
inch wrench, disconnect the SMA cable W107 on the
attenuator.
5. Remove the input relay:
a. Unplug the cable W114 on the input relay.
b. Remove the two screws securing the input relay to the bracket.
c. Using a
5
@
16
inch wrench, disconnect the SMA cable at RF INPUT.
d. Using a
5
@
16
inch wrench, disconnect the SMA cables W101, W107, and
W119 on the input relay. Lift up and remove the input relay.
e. If necessary, remove the four screws securing the bracket to the main
chassis. Lift up and remove the bracket.
6.
Reinstallation:
Reverse step 3 through 5 to reinstall the RF1 modules.
1. Assemble equipment and locate module to be removed:
a. You will need a #1 Phillips screwdriver (Items 1 and 2) and a
5
@
16
inch
wrench (Item 11).
b. Locate the modules in the locator diagram
Bottom modules -- RF1
,
Figure 6--9, page 6--19.
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 Interconnection board (Refer to the A100
Interconnection Board procedure on page 6--50).
See Figure 6--26 for the following steps 4 through 8. Also see Figure 6--39 for
cable interconnection.
4.
Remove the base plate with the modules:
a. Using a
5
@
16
inch wrench, disconnect the SMA cable W101 at the
RF INPUT.
b. Using a
5
@
16
inch wrench, disconnect the SMA cable W106 at the 3 dB
attenuator on the programmable band-pass filter.
Input Relay,
Programmable BPF,
Step Attenuator 1, and
Band Relay
(for RSA3308A)