Chapter 3
MediaDirector 2252/2251 component replacement
The following components may be replaced in the MediaDirector 2252/2251: the bezel and power supply
units.
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Replacing the bezel
Over time, the bezel LEDs can wear out. Replacement bezels are available from Harmonic.
CAUTION:
The front panel is susceptible to electrostatic discharge (ESD) when the bezel
is removed. Wear the appropriate ESD protection when you remove the bezel.
Removing the bezel
The bezel may be removed during operation.
1. Unlock the bezel by loosening the two captive thumb screws.
NOTE:
Keep the rack ears in place.
2. Pull the bezel straight away from the chassis.
Installing the bezel
Align the bezel in front of the chassis so that the Harmonic logo appears on the top left corner.
1. Keeping the corners aligned, press the bezel straight onto the chassis.
2. Hand-tighten the two captive thumb screws to secure the bezel in place.
CAUTION:
Do not over-tighten the thumb screws.
Replacing a power supply unit
The MediaDirector is equipped with two hot-swappable power supplies, each with an independent AC
connector. If one supply fails, the load is transferred to the remaining supply without interruption to
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