Service Manual

GSM-204-523
Replacing the control and alarm board (CAB)
31st Oct 01
Maint. 3–16
Maintenance Information: Horizon macro outdoor
CONTROLLED INTRODUCTION
68P02902W04-A
Replacing a
CAB
A faulty CAB may be replaced using the following procedure:
1. Unscrew the two front panel fasteners using a Torx driver or crosspoint
screwdriver.
2. Withdraw the CAB until the edge connector at the rear unplugs.
3. Carefully slide the CAB from its location.
4. Remove the replacement CAB from its anti-static storage container. Check
that the DIP switch settings on the replacement CAB match those on the
original board.
5. Place the original CAB in an anti-static storage container.
6. Slide the CAB along the guide rails and push firmly into place.
7. Tighten both front panel attachment screws. Tighten to the correct torque
(see Overview of FRU replacement procedures in this chapter).
8. Check the CAB front panel LEDs for alarm indications.
9. Notify the OMC-R of base station availability and log the maintenance
activity.