Nortel BCM450 Maintenance Manual page 43

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Figure 8 Installing main unit top cover
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Slide the top cover forward until it engages with the main unit.
Press the top cover down until it rests on the chassis.
Install the two top cover screws at the rear of the main unit.
Business Communications Manager 450
Maintenance
NN40170-503 02.04 Standard
August 2009
Common procedures 43
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