Operation Manual

power. After ac power has been removed from the server, power remains
available to these LEDs for up to 12 hours. After 12 hours, you must
reinstall the microprocessor tray and turn on the server to supply power
to the LEDs.
To reinstall the microprocessor tray, reverse the preceding steps.
DIMM LEDs
Complete the following steps to view the DIMM LEDs:
Note: The lit LEDs light the connector retaining clips; look for a lit retaining clip to
locate a failed DIMM.
1. Turn off the server and all peripheral devices.
2. Slide the server out of the rack cabinet.
3. Open the top cover.
a. The following illustration shows the internal connectors and LEDs on the
8-DIMM-connector memory board in the memory cassette.
DIMM connector 1
DIMM connector 2
DIMM connector 3
DIMM connector 4
DIMM connector 5
DIMM connector 6
DIMM connector 7
DIMM connector 8
DIMM 1 error LED
DIMM 2 error LED
DIMM 3 error LED
DIMM 4 error LED
DIMM 5 error LED
DIMM 6 error LED
DIMM 7 error LED
DIMM 8 error LED
20 IBM xSeries 365 Types 8861, 8862: Hardware Maintenance Manual and Troubleshooting Guide