Troubleshooting: Your Array 251Troubleshooting Array Cooling ProblemsCAUTION: Many repairs may only be done by a certified service technician.You should only perform troubleshooting and simple repairs as authorized inyour product documentation, or as directed by the online or telephone serviceand support team. Damage due to servicing that is not authorized by Dell is notcovered by your warranty. Read and follow the safety instructions that camewith the product.Ensure that none of the following conditions exist:• array cover or drive blank is removed.• Ambient temperature is too high. See “Technical Specifications” in theGetting Started Guide.• External airflow is obstructed.• The power supply/cooling fan module is removed or has failed. See"Troubleshooting Power Supply/Cooling Fan Module" on page 250.If the problem is not resolved, see "Getting Help " on page 259.Troubleshooting Expansion EnclosureManagement ModulesCAUTION: Many repairs may only be done by a certified service technician.You should only perform troubleshooting and simple repairs as authorized inyour product documentation, or as directed by the online or telephone serviceand support team. Damage due to servicing that is not authorized by Dell is notcovered by your warranty. Read and follow the safety instructions that camewith the product.CAUTION: It is recommended that you turn off the host server before turning offthe expansion enclosure to prevent loss of data.• If the EMM status LED is solid or blinking amber (2 or 4 times persequence):a Turn off the server.b Remove the EMM and verify that the pins on backplane and EMM arenot bent. See Removing an EMM in the MD1200 and MD1220Storage Enclosures Hardware Owner's Manual.
