Service Manual

GSM-205-523
Replacing a CCB
31st Oct 01
Maintenance Information: Horizon macro indoor
68P02902W09-B
CONTROLLED INTRODUCTION
Maint. 2–31
Fitting
replacement
CCBs and CCB
control boards
Follow these procedures to fit replacement CCBs.
Fitting CCBs into the basket
1. Place CCB basket onto flat surface.
2. Place the CCBs into the basket and secure with four M6 screws on the
front and two M8 screws at the back. Tighten to correct torque (see
Overview of replacement procedures).
3. Insert each CCB control board, then securing cover with four M4 screws.
Tighten to correct torque (see Overview of replacement procedures).
4. Connect phasing lead between CCB control boards.
Fitting the basket to the stacking bracket
1. Ensure N-type cables are connected to the feedthrough plates and draped
over the front of the cabinet.
2. Slide the basket part way into the stacking bracket, and connect antennas
to the CCBs.
3. Slide the CCB basket fully home.
4. Connect the six N-type to N-type RF cables from the feedthrough plates to
the CCB inputs. Connect to the positions noted in the removal procedure.
5. Attach the CCB basket bar to the sides of the stacking bracket using the
two captive screws. The bar is then directly underneath the basket captive
screws.
6. Attach the CCB basket bar to the basket with the three captive screws on
the basket.
7. Connect the power cable to each CCB from the single connector (marked
CCB) on the Interface panel.
8. Refit the front cover onto the stacking bracket, pushing it in so that it can
drop into position on the side lugs.
The CCBs are now replaced and ready for power up of the cabinet.