Lenovo 3815, 3836, 3809, 3826, 3724, 3824, 3808, 3817 manual Serial port problems

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

vSee the Hardware Maintenance Manual 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.

Symptom	Action
The server unexpectedly shuts	See “Solving undetermined problems” on page 173.
down, and the LEDs on the
control-panel assembly are not
lit.

Serial port problems

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

vSee the Hardware Maintenance Manual 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.

Symptom	Action
The number of serial ports that	1.	Make sure that:
are identified by the operating
		v Each port is assigned a unique address in the Setup Utility program and
system is less than the number			none of the serial ports is disabled.
of installed serial ports.
		v The serial port adapter (if one is present) is seated correctly.
	2.	Reseat the serial port adapter.
	3.	Replace the serial port adapter.
A serial device does not work.	1.	Make sure that:
		v The device is compatible with the server.
		v The serial port is enabled and is assigned a unique address.
		v The device is connected to the correct connector.
	2.	Reseat the following components:
		a.	Failing serial device
		b.	Serial cable
	3.	Replace the following components one at a time, in the order shown, restarting
		the server each time:
		a.	Failing serial device
		b.	Serial cable
		c. (Trained service technician only) System board

172ThinkServer TD200 Types 3724, 3808, 3809, 3815, 3817, 3824, 3826, 3836: Installation and User Guide