Replacing A Power Supply - IBM DS3500 Installation, User's, And Maintenance Manual

Release
levers
Figure 5-16. Replacing a power supply
a. Open the two release levers as shown in the illustration. The controller moves out of the bay
approximately 0.6 cm (0.25 inch).
b. Slide the dc power supply out of the bay and set it aside.
DANGER
Electrical voltage and current from power cables are hazardous. To avoid a shock hazard,
always place electrical equipment on dry, static-free level surfaces. Never turn on any electrical
equipment when there is evidence of fire, water, or structural damage.
11. Place the replacement dc power supply on a dry, static-free level surface.
12. Make sure that the release levers on the power supply are in the open position.
13. Slide the dc power supply into the bay until it stops.
14. Push the release levers to the closed position.
15. Connect the dc power cable and turn on the -48 V disconnect device, then; turn on the power-supply
switch.
16. Check the power and fault LEDs on the new unit.
17. According to the status of the power and fault LEDs, use one of the following procedures:
v The fault LED is lit and the dc power in and dc power out power LEDs are off: The new unit
might be installed incorrectly. The power-supply switch might not be turned on. The dc power
cable might not be fully inserted into the power connector. The disconnect device might be turned
off or inoperative. The dc power source might be turned off or inoperative. The dc power cable
might be faulty. Go to step 18.
v The fault and dc power in LEDs are lit but the dc power out LED is off: The power supply is
faulty. Turn off the power switch and contact your IBM technical-support representative for a
replacement power supply.
v The dc power in and dc power out LEDs are lit but the fault LED is off: Go to step 19 on page
5-31.
18. Perform the following task or tasks to solve the problem:
v Make sure that the power switch is turned to the on position.
v Make sure that there is power at the dc source and no disconnect device has tripped.
v Make sure that the power cable is working and fully seated into the dc power connector.
v Make sure that the dc power cable is properly connected to the dc power source.
v Reinstall the power supply.
5-30
System Storage DS3500 and EXP3500: Installation, User's, and Maintenance Guide
Power supply