Component identification  91 
DIMM fault identification button 
When the DIMM fault LEDs (on page 90) indicate that a DIMM is experiencing an error, press the DIMM 
fault identification button to illuminate the LED below the affected DIMM ("Memory error LEDs" on page 
92). 
 
 
Item  Description 
Board B DIMM fault identification button 
Board A DIMM fault identification button