User's Manual

Table Of Contents
Installation, Operation and Service Manual 90DIB500R41IM_FCC02 99.1 219
DIB-500 R4.1 Component replacement
Replacing cavity couplers – optional (cavity variants only)
11.9.1 Replacing a cavity coupler
As many as eight cavity couplers can be installed in a DIB-500 R4.1. Each pair of cavity
coupler is installed on a mounting plate on the front of the equipment rack. Each cavity
coupler is fastened to the mounting plate with four attachment screws from below and
two attachment screws from behind. Four screws fasten the mounting plate to the
equipment cabinet. To remove a cavity coupler, first remove the mounting plate and
then remove the screws fastening the cavity coupler to the mounting plate. The second
(operable) cavity coupler stays attached to the mounting plate.
The following sections describe the removal and installation of a cavity coupler.
Procedure described refers to one cavity coupler
The procedure described in the following refers to one cavity coupler. Depending on the
DIB-500 R4.1 variant, the work steps may have to be repeated for further cavity cou-
plers.
11.9.1.1 Removing a cavity coupler
The procedure for removing a cavity coupler is described in the following.
Proceed as follows to remove a cavity coupler:
Preparation:
The tools and aids must be available, refer to section 11.2.7 on page 174.
Carry out the following steps:
1. Switch off the voltage supply by flipping down the On/Off switch, refer to Figure
3.15 on page 43.
Specified cable lengths
All cables have specified lengths and must not be mixed. Mark the removed cables dur-
ing the uninstallation, if necessary, and reconnect the removed cables again to the orig-
inal connection during reinstallation.
Risk of injury
The equipment rack features sharp edges on the inside. Risk of injury if you do not wear
protective gloves.
Always wear protective gloves for the following process steps.
2. Disconnect all the cables connected to the component, refer to Figure 3.31 on
page 78.