Tektronix RSA3408B, Service Manual

Page: 174 / 250

Removal and Installation Procedures
5- 46
RSA3408B Analyzer Service Manual
Procedures for Power Supply Modules on the Instrument Bottom
Read the
Access Procedure
on page 5--21 before proceeding. The procedures are
presented in the following order:
H
Power supply 1 and 2
H
A71 AC power board
H
Power supply 3 (standby power)
H
Line filter
H
Principal power switch
1.
Assemble equipment and locate module to be removed:
a. You will need a #2 Phillips screwdriver (Items 1 and 3).
b.
Locate the power supply 1 and 2 in the locator diagram Bottom modules
-- Power supply , Figure 5--7 on page 5--17.
2. Orient the analyzer: Set the analyzer so its top is down on the work surface
and its front is facing you.
See Figure 5--25 for the following steps 3 and 4. Also see Figure 5--38 on
page 5--76 for cable interconnection.
3.
Remove the power supply 1:
a. Unplug the cables at J902, J900, and J901 on the A50 motherboard.
b. Unplug the cable at J110 on the A71 AC power board.
c. Remove the four screws securing the power supply 1 to the bracket.
Lift up and remove the power supply 1.
4.
Remove the power supply 2:
a.
Unplug the cables at J912, J910, and J911 on the A50 motherboard.
b. Unplug the cable at J130 on the A71 AC power board.
c. Remove the four screws securing the power supply 2 to the bracket.
Lift up and remove the power supply 2.
5.
Reinstallation: Reverse steps 3 and 4 to reinstall the power supply 1 and 2.
Power Supply 1 and 2