C-COR Flex Max901e Equipment Manual page 94

7
7-6 Flex Max901e 1GHz Trunk and Bridger Amplifiers
To replace the RF module with the spare RF module with return switches installed
WARNING Hazardous voltages are present. Use approved safety equipment and
procedures.
CAUTION Arcing between the RF module and centerseizure assemblies will damage
the unit. Disconnect power supply plug before removing the RF module from the
housing.
Note If replacing an RF module with one having a different testpoint loss, modify the
testpoint loss labeling on the housing accordingly. If the testpoint loss is labeled on the
replacement module faceplate, modify or remove the housing label.
Tip If aluminum oxide (white powder) is present on the centerseizure assemblies,
remove it before proceeding.
1. Open the Flex Max901e housing. Refer to Housing Opening on page 4-5 if necessary.
2. Disconnect the power supply plug from the RF module POWER PLUG connector.
3. Use a flat-blade screwdriver to loosen and release the four captive MODULE HOLD DOWN
screws.
Note Observe the orientation of the RF module before removing it.
4. Firmly grasp the RF module handles and pull the RF module straight out of the housing.
5. Remove the plug-in accessories from the removed module and install them into the
replacement RF module.
6. Orient the replacement RF module with the return switches into the housing as observed
in Step 4. Align the RF module back pins with the receptacles located on the centerseizure
assemblies. If using
7. Firmly press the replacement RF module into the housing until the back of the RF module
contacts the inside of the housing.
8. Using a flat-blade screwdriver, start threading the captive MODULE HOLD DOWN screws
into the housing. Tighten the screws alternately to prevent stressing the module or housing.
Torque to between 25 and 27 in-lbs (2.8 and 3.1 N·m).
9. Connect the power supply plug to the RF module POWER PLUG connector.
10. Perform the Forward and Return Field Test described in the Flex Max901e 1 GHz Amplifiers
Equipment Manual, 1500335.
11. Close the Flex Max901e housing. Refer to Housing Closing and Tightening on page 4-19 if
necessary.
1502154 Rev D