aculab Prosody X Installationshandbuch - Seite 15

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Figure 2-2 Rear fan assembly retaining screws

The fans are removed by simply unscrewing the retaining screws of the assembly

with the failed fan and pulling it out. The replacement fan assembly should be

replaced without delay. The retaining screws should then be tightened.

Note: the front and rear fan assemblies are not the same.

2.3

Power Module Failure

The Prosody X 1U HA chassis has a redundant power system. LEDs on the front

panel and on each power module show the power module is operating. If a single

module fails the appropriate LED, marked on the front panel, will go out and an alarm

will sound. The PSU LED may also go out, depending on the type of internal failure.

Figure 2-3 Power Supply Unit identification

The failure will be detected by the on-board system software. The audible alarm can

be silenced by pressing the "mute" button on the front panel.

The failed power module may be removed without powering the chassis down.

This should only be performed by qualified technical personnel.

To remove the failed power module:

1. Isolate the supply voltage to the failed power module

2. Remove the power cord (AC) or wire pair (DC) from the failed power supply

3. Remove the retaining screw

4. Pull the failed power supply out

CAUTION

Prosody X Installation guide

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