Dell PowerVault 221S (SCSI) - Manual (Page 28)

Troubleshooting: Dell PowerVault 220S and 221S Systems Installation and Troubleshooting Guide
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" Replacing a Cooling Module "). For more information, see " Troubleshooting a Cooling Module ."
4. Is the amber fault indicator on the back of the power supply illuminated? (See Figure 1-7 .)
No. Go to step 5 .
Yes. A power supply has failed. Replace the failed power supply (see " Replacing the Power Supply "). For more
information, see " Troubleshooting a Power Supply ."
5. Is the amber fault indicator for either cooling module blower illuminated? (See Figure 1-7 .)
No. Go to step 6 .
Yes. One of the cooling module blowers has failed. Replace the failed module (see " Replacing a Cooling Module "). For
more information, see " Troubleshooting a Cooling Module ."
6. Is the amber fault indicator on an EMM illuminated? (See Figure 1-5 .)
No. Go to step 7 .
Yes. An EMM has failed. Replace the EMM (see " Installing an EMM or SCSI Terminator Card ").
7. Is the power indicator on the split-bus module illuminated? (See Figure 1-5 .)
Yes. Go to step 8 .
No. The split-bus module has failed. Replace the split-bus module (see " Installing a Split-Bus Module ").
8. Are the pins on the SCSI cable damaged or is the cable between the host and the storage system disconnected?
No. Go to step 9 .
Yes. Secure or replace the cable.
9. Replace the SCSI backplane board. Contact Dell for assistance.
See "Getting Help" for instructions on contacting Dell.
Troubleshooting a Cooling Module
The cooling module LED fault indicators are located in the upper-right corner of each power supply, as shown in Figure 5-3 . If
a blower fault indicator is illuminated or your array management software issues a blower-related error message, reseat the
cooling module onto the power supply. If reseating does not fix the problem, replace the cooling module (see " Replacing a
Cooling Module ").
CAUTION: A power supply and cooling module can be removed from a powered-on system for a maximum
period of five minutes. Beyond that time, the system begins to overheat, and at a critical temperature,
shuts down to prevent damage.
Figure 5-3. Power Supply and Cooling Module LED Indicators