4  System Error LED (yellow)
The system error LED helps you to determine if there are any system errors.
Status Color Description Action
On
Yellow An error has been detected on the server. 
Causes might include one or more of the 
following errors: 
•  The temperature of the server reached 
the non-critical temperature threshold.
•  The voltage of the server reached the 
non-critical voltage threshold.
•  A fan has been detected to be running at 
low speed.
•  The power supply has a critical error.
•  The power supply is not connected to 
the power.
Check the Event log to determine the exact 
cause of the error. 
Off
None The server is off or the server is on and is 
working correctly.
None.
External LCD diagnostics handset
The external LCD diagnostics handset is an external device that is connected to the server with a cable, and 
it allows quick access to system information such as errors, system status, firmware, network, and health 
information. 
Location of the external LCD diagnostics handset
Location  Callouts
The external LCD diagnostics handset is connected to the 
server with an external cable.
1  External LCD diagnostics handset 
2  Magnetic bottom  
With this component, the diagnostic handset can be 
attached to the top or side of the rack with hands spared 
for service tasks.
3  External diagnostics connector  
This connector is located on the front of the server, and is 
used to connect an external LCD diagnostics handset.
334 ThinkSystem SR670 V2 Maintenance Manual