344 Troubleshooting1 Turn off the sled and attached peripherals.2 Remove the sled from the enclosure. See "Removing a Sled" on page 155.3 Open the sled. See "Removing the Front and Back Sled Covers" onpage 176 or "Removing the Sled Cover" on page 181.4 Ensure that each expansion card is firmly seated in its connector.See "Expansion Cards" on page 192.5 Close the sled. See "Installing the Front and Back Sled Covers" onpage 180 or "Installing the Sled Cover" on page 183.6 Reinstall the sled into the enclosure. See "Installing a Sled" on page 156.7 Turn on the sled and attached peripherals.8 If the problem is not resolved, see "Getting Help" on page 369.Troubleshooting ProcessorsCAUTION: Many repairs may only be done by a certified service technician. Youshould only perform troubleshooting and simple repairs as authorized in yourproduct documentation, or as directed by the online or telephone service andsupport team. Damage due to servicing that is not authorized by Dell is not coveredby your warranty. Read and follow the safety instructions that came with theproduct.1 Turn off the sled and attached peripherals.2 Remove the sled from the enclosure. See "Removing a Sled" on page 155.3 Open the sled. See "Removing the Front and Back Sled Covers" onpage 176 or "Removing the Sled Cover" on page 181.4 Remove the cooling shroud. See "Removing the Cooling Shroud" onpage 276.5 Ensure that each heat sink is properly installed. See "Installing a HeatSink" on page 280.6 Ensure that there is thermal grease on the heat sink and processor.7 Ensure that each processor is properly installed. See "Installing a Processor"on page 285.8 Replace the cooling shroud. See "Installing the Cooling Shroud" onpage 277.
