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A.3.1.1
Installation
CAUTIO N
The following tool is required to install the overhead interface PCB:
Phillips Screwdriver
Use the following information to install the overhead interface PCB as a daughter card on
the main PCB. Refer to Figure A-20 for the installation location of the overhead interface
daughter card.
CAUTIO N
1. Turn off the modem and unplug the power supply.
2. Remove the rear panel retaining screws. Using the finger pulls, slide the main
3. Install the overhead interface PCB, face down, onto the main PCB by mating the
4. Align the overhead interface PCB standoffs with the main PCB mounting holes.
5. After completing the installation procedure, turn on the modem. Select the
A–70
This equipment contains parts and assemblies sensitive to damage by ESD.
Use ESD precautionary procedures when touching, removing, or inserting
PCBs.
Description
To remove and replace cross-point screws.
Turn the power off before installation. High current VDC is present. Failure
to do so could result in damage to the modem components.
modem assembly out from the rear of the modem chassis.
male header connectors with the female header connectors in the position shown
in Figure A-20.
Install the four mounting screws and washers.
The mounting hardware must be installed to provide proper
grounding between the overhead interface PCB and the main PCB.
CAUTIO N
desired modem option to use the overhead card.
SDM-300A Satellite Modem
Application
Rev. 4
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