Lenovo RD210 manual Power-supply LEDs, System pulse LEDs

Power-supply LEDs

The following illustration shows the location of the power-supply LEDs on the rear of the server. See the Hardware Maintenance Manual for additional information on solving power supply problems.

Table 4.

1 AC LED (green)

2 DC LED (green)

3 Power supply error LED (amber)

System pulse LEDs

The following LEDs are on the system board and monitors the system power-on and power-off sequencing and boot progress (see “System-board LEDs” on page

33 for the location of these LEDs):

Table 5. System pulse LEDs

LED	Description	Action
Enclosure manager heartbeat	power-on and power-off sequencing.	1.	If the LED blinks at 1Hz, it is
			functioning properly and no action
			is necessary.
		2.	If the LED is not blinking, (trained
			service technician only) replace
			the system board.

34ThinkServer RD210 Types 3795, 3796, 3818, and 3819: Installation and User Guide