Clear-com HX System Frames User Manual download pdf (Page 125)

Power supply lights on a component

A lit power-supply light on a component indicates that the matrix’s electric current has

traveled successfully to that component and is powering the component. For example, if the

power-supply lights on the CPU card are lit, the electric current has successfully traveled

from the matrix’s power supplies to the CPU card.

If a power-supply light is not lit on a component, the electric current has not reached that

component for some reason. Knowing where the current has stalled helps to identify the

component that needs repair.

For example, if all of the power-supply lights on all cards do not light, the electricity supply

may have given out either in the power supplies themselves or in the matrix’s backplane

connectors. A faulty connector on the backplane, or a crack in the backplane can cause all

of the matrix’s power-supply lights to go out because the path on which the electric current is

traveling has been blocked.

This is a rare problem, but one to consider as a possibility. Repairing the problem in this

case would involve determining whether the problem is in the power supplies or the

backplane connectors.

When a problem is identified in the power supplies or the circuit cards, the suspect

component can be replaced with a properly functioning component to see if the problem is

repaired.

Example power supply issues

Problem: One or more power supply lights are unlit on one interface card

Before repairing or replacing card, try to determine where the problem is occurring. One or

both of the following actions can be tried:

Action 1: Take the bad card out of the matrix, and insert it into a known good slot in

the matrix.

If the power supply lights still do not illuminate, the problem is probably in the card itself.

Repair or replace the card.

If the power supply lights illuminate, the problem may be in the matrix’s backplane

connectors, which carry electric current from the power supplies to the cards. The matrix can

be returned to Clear-Com for investigation or repair. In the meantime another matrix can be

substituted for the damaged one.

Note:

Clear-Com may ship a spare matrix to use while the damaged matrix is being repaired

depending on the support status. For more information, see your warranty and support

documentation.

Action 2: Take a known good card, and insert it into the slot.

If the power supply lights illuminate, the problem is probably in the card. Repair or replace

the card.

If the power-supply lights do not illuminate, the problem may be in the matrix’s backplane

connectors, which carry electric current from the power supplies to the cards. The matrix can

be returned to Clear-Com for investigation or repair. In the meantime another matrix can be

substituted for the damaged one.

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