NEC LED-FA025i2-220, Руководство пользователя

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Caution!
Risk of damaging the Hub board.
When reinstalling the Hub board, do not bent the two
Power-good-connectors.
With bent connectors, the whole module cannot work properly.
Change the Receiving Cards
10.5.3
For servicing the Receiving cards, you first need to remove the Pixel cards (see 10.5.1) and the
Hub board (see 10.5.2).
Pull the Receiving cards straight off the Step 1)
Hub board to not to damage their
connectors.
Replace the Receiving card. Step 2)
To replace the Receiving card, follow the Step 3)
instructions in reverse order.
Figure 122: Replacing the Receiving Card
Change the Power Supply System
10.5.4
For servicing the power supply, you first need to remove the Pixel cards (see 10.5.1) and the Hub
board (see 10.5.2). Now the power supply in the cabinet is accessible.
The following components contribute to the power supply of a module:
 2 Power supply units (PSU) (A)
 1 Power distribution unit (PDU) (B1) with PDU shielding (B2)
 2 Power supply interfaces to Hub board (C)
Figure 123: Behind Hub Board – Redundant Power Supply and PDU with PDU Shielding
B B2 B1
A
C