The following illustration shows the LEDs on the system board.
System
error
LED
System
locator
LED
Power
LED
DIMM 19-24
error LEDs
DIMM 7-18
error LEDs
DIMM 1- 6
error LEDs
Coin-cell-battery
error LED
IMM2
heartbeat
LED
ServeRAID error LED
Microprocessor 1
error LED
Microprocessor 2
error LED
Fan 1
error LED
Fan 2
error LED
Fan 3
error LED
Fan 5
error LED
Fan 6
error LED
Fan 7
error LED
Fan 8
error LED
Figure 29. System board error LEDs
Some eight 2.5-inch server models come with an LCD operating panel assembly. The LCD operating panel
assembly displays a current list of errors reported by the system and other information. See the “LCD
operating panel assembly” on page 19 for more information about the LCD operating panel assembly.
Note:
The LCD operating panel assembly is only available on the eight 2.5-inch server models with the
advanced media cage.
Power-supply LEDs
Use this information to view power-supply LEDs.
The following minimum configuration is required for the server to start:
• One microprocessor in the microprocessor socket 1
• One 8 GB DIMM on the system board
• One power supply
• Power cord
• Five fans
ac power-supply LEDs
Use this information to view ac power-supply LEDs.
60
Lenovo System x3550 M5 Installation and Service Guide
Summary of Contents for System x3550 M5
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