PS for LED Power Box

Prerequisites

Table 1. Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
1	Not Applicable	30 minutes	15 minutes

Table 2. Tools and test equipment
Item	Quantity	Effectivity	Part number	Manufacturer
Standard Tool	1	-	-	-

Table 3. Replacement parts
Item	Quantity	Effectivity	Part number	Manufacturer
DC Power Supply Tray Assembly	1	-	5351003	-
AC-DC power supply, 24V	1	-	5803655	-
LED box DCPS tray without 24V PS	1	-	5803648	-

Table 4. Safety

Warning

ELECTROCUTION HAZARD!

DANGEROUS AND OR FATAL VOLTAGES ARE PRESENT IN THE ENERGIZED CABINET.

Follow loto steps as given in first section of this document to disable and verify safe voltage levels.

Table 5. Required conditions
Condition	Reference	Effectivity
System Power must be turned OFF. Refer to System Cabinet PDU Main Breaker LOTO Procedure.	-	-

Overview

Location of each Power Supply is as following illustration

Remove Front Cover. Refer to SC Cover Removal
Note:
PS connectors are designed to be uniquely connected to the other end to avoid the mis-connection except Receiver and Exciter cable connectors.

Disconnect the connectors which are routed from PS for LED Power BOX. If necessary, cut the tie wraps.
Loosen 2 screws which are tightening power supply and chassis.
Notice

PS Tray is tightly inserted in the bracket. Need enough pull force to remove it.
Remove the PS for LED Power Box tray from System Cabinet.

Figure 3. PS for LED Power BOX
Restore power supply by reverse order of removal.

Remove the power supply tray from the system cabinet, refer toStep 1 to Step 4.
Remove PS pin connectors.

Figure 5. Remove PS pin connectors
Remove 4 screws (1007–m3c008–14).

Figure 6. Remove screws
Remove the white cable by removing the two screws.

Figure 7. Remove screws
Restore power supply by reverse order of removal.

Note:
Please note below marking (+24V, GND) when restored the cables.
Figure 8. Marking