Personal Computer User Manual

204 Troubleshooting
1 If the system is not operational, turn off the sled and attached peripherals.
2 After 10 seconds, turn on the sled and attached peripherals and note the
messages on the screen.
Go to step 13 if an error message appears indicating a fault with a specific
memory module.
3 Enter the System Setup program and check the system memory settings.
See "Main Menu" on page 52. Make any changes to the memory settings, if
needed.
If the memory settings match the installed memory but a problem is still
indicated, go to step 13.
4 Turn off the sled and attached peripherals.
5 Remove the sled from the enclosure. See "Removing a Sled" on page 133.
6 Remove the cooling shroud. See "Removing the Cooling Shroud" on
page 141.
7 Check the memory channels and ensure that they are populated correctly.
See "Supported DIMM Configuration" on page 151.
8 Reseat the memory modules in their sockets. See "Removing Memory
Modules" on page 153 and "Installing Memory Modules" on page 154.
9 Replace the cooling shroud. See "Installing the Cooling Shroud" on
page 142.
10 Reinstall the sled into the enclosure. See "Installing a Sled" on page 134.
11 Turn on the sled and attached peripherals.
12 Enter the System Setup program and check the system memory settings.
See "Main Menu" on page 52.
If the problem is not resolved, proceed with the next step.
13 Turn off the sled and attached peripherals.
14 Remove the sled from the enclosure. See "Removing a Sled" on page 133.
15 Remove the cooling shroud. See "Removing the Cooling Shroud" on
page 141.
16 If a diagnostic test or error message indicates a specific memory module as
faulty, swap or replace the module.