Download TEK RFA300 Service

Maintenance
Backplane Circuit
Board Removal and
Replacement
To remove the backplane, the power supply and all of the plug in circuit boards
must first be removed.
Remove the Backplane. With the cabinet off the chassis, use the following
procedure to remove the backplane:
1. Remove the power supply module (see Power Supply Removal and
Replacement on page 6–29).
2. Remove all the plug in modules from the card cage (see the RFA300 module
removal instructions starting with Removing the Acquisition Module on page
6–12).
3. Remove the 15 screws holding the backplane board assembly to the chassis
with a T15 screw tip screwdriver (see Figure 6–24 for the screw locations).
4. Lift the back plane board assembly out of the chassis.
Reinstall the Backplane. Use the following procedure to reinstall the backplane
circuit board into the platform card cage.
1. Place the backplane board assembly into the mainframe chassis. See
Figure 6–24 for orientation of back plane to chassis.
2. Attach backplane board assembly to the chassis with fifteen T15 screws.
Torque the screws to 8 in-lbs.
3. Reinstall the PCI plug in modules using their reinstallation instructions (refer
to Reinstalling an RFA300 PCI Module on page 6–18 and Reinstall the
Controller Board on page 6–34).
4. Reinstall the power supply assembly using its reinstallation instructions
(refer to Power Supply Removal and Replacement on page 6–29).
5. Reinstall the cover and bezel to complete the assembly (refer to Removing
the Front Panel Bezel and Removing the RFA300 Cabinet on page 6–9).
6–38
RFA300 Measurement Set 8VSB Service Manual