Replacement Parts and Exchange and Repair Programs
27
Power Supply Assembly Replacement
1.
Turn off power to the power supplies by turning off the power supply breakers in the
panelboard.
2.
Locate the failed power supply reported by the DDMS controller.
3.
Note the location and orientation of the plugs connected to the isolation board on
the failed power supply, and disconnect the plugs. Set the rotary switches and DIP
switches on the new isolation board to the same settings as the old board.
4.
Loosen the screws securing the power supply to the backsheet and gently lift the
power supply off the backsheet.
5.
Using a Phillips screwdriver, loosen the screws securing the power supply to the
mounting plate, and gently lift the faulty power supply off the mounting plate.
6.
Remove the screws connecting the isolation board to the power supply.
To replace the power supply, follow the previous steps in reverse order.
Fan Assembly Replacement
1.
Turn off power to the fan assembly by turning off the appropriate breaker in the
panelboard.
2.
Disconnect the fan’s power cord.
3.
Remove the hardware securing the finger guard and fan to the assembly bracket.
4.
Remove the fan.
5.
Attach the new fan to the bracket and secure it using the hardware removed in
Step 3
. Note the air flow orientation when attaching the new fan. Airflow should be
out of cabinet.
6.
Reconnect power to the fan.
7.
Check that the fan works by pressing the override button on the fan assembly.
Light Assembly Replacement
1.
Turn off the circuit breaker that powers the light.
2.
Remove the lamp cover and lamp.
3.
Insert a new lamp into the assembly and replace the cover.
4.
Restore power and test the light.
VM CAN Distribution Board Replacement (Optional)
1.
Turn off power to the power supplies.
2.
Open the fiber-to-wire enclosure.
3.
Note the location and orientation of the plugs connected to the VM CAN distribution
board, and disconnect the plugs.
4.
With a Phillips screwdriver, remove the screws securing the VM CAN distribution
board.
5.
Gently remove the board from the fiber-to-wire enclosure.
