Lenovo 3821, 3822, 3719, 3823 manual Flashing rapidly 4 times per second The server is turned off

System power-on LED

Hard disk drive activity LED

System-locator LED

System-information LED

System-error LED

vFollow the suggested actions in the order in which they are listed in the Action column until the problem is solved.

vSee Chapter 8, “Parts Listing, TD200x Machine Types 3719, 3821, 3822, and 3823,” on page 237 to determine which components are customer replaceable units (CRUs) and which components are field replaceable units (FRUs).

vIf an action step is preceded by “(Trained service technician only),” that step must be performed only by a trained service technician.

Lit EasyLED diagnostics LEDs with the
system-error or information LED also lit	Description
System power-on (green)	The states of the power-on LED are as follows:
	v Off: ac power is not present, or the power supply or the LED itself
	has failed.
	v Flashing rapidly (4 times per second): The server is turned off
	and is not ready to be turned on. The power-control button is
	disabled. Approximately 3 minutes after the server is connected to
	ac power, the power-control button becomes active.
	v Flashing slowly (once per second): The server is turned off and is
	ready to be turned on. You can press the power-control button to
	turn on the server.
	v Lit: The server is turned on.
	v Fading on and off: The server is in a reduced-power state. To
	wake the server, press the power-control button or use the IMM
	Web interface.
Hard-disk drive activity (green)	When this LED is flashing rapidly, it indicates that there is activity on a
	hard disk drive.
System locator (blue)	Use this LED to visually locate the server among other servers.

128ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Hardware Maintenance Manual