StorageWorks Wide Expansion Storage Pedestal
4–8
Order Number: EK–SMCPC–UG. A01
4.4
Replacing a Fan Assembly (Blower)
WARNING
Due to hazardous high-current energy levels present in the
backplane area, use extreme caution while swapping blowers
in the following procedure. Keep all metal objects, including
rings and jewelry, out of the blower/backplane cavity.
CAUTION
To prevent an overheating condition, the replacement blower
should be readily available to ireplace the faulty blower during
the following procedure.
The pedestal has two blowers mounted at the rear. Connectors on the backplane provide
the +12 Volts dc to operate the blowers. As long as one blower is operational, there is
sufficient airflow to prevent an overheating condition. When either blower fails, the left
shelf status LED on the power supply goes off (refer to Table 4–1). Figure 4–6 shows the
removal of a blower.
To replace a blower, perform the following procedure:
1. Determine which of the two blowers has failed by feeling the air flow at the bottom
of each blower.
2. Remove the rear bezel using the procedure in Paragraph 4.5.1.
3. Using a Phillips screwdriver, remove the safety screw in the corner of the blower.
4. Press the side locking tabs to release the blower.
5. Pull the blower straight out to disconnect it from the pedestal power connector.
6. Align the replacement blower connector and insert the module straight in, making
sure that both locking tabs are firmly seated in the pedestal.
7. Replace the safety screw in the corner of the blower.
8. Verify that the pedestal and all SBBs are operating properly (refer to pedestal status,
Tables 4–1 and 4–2).
9. Install the rear bezel using the procedure in Paragraph 4.5.2.
NOTE
If the left power supply LED (pedestal status) does not come
on and all the pedestal power supplies are operating, the
second blower may have failed. Check the personality module
blower status LEDs. (Refer to Paragraph 4.7.)
