Hazardous voltage, current, and energy levels might be present. Only a qualified service technician is 
authorized to remove the covers where the label is attached. 
S017 
CAUTION: 
Hazardous moving fan blades nearby. Keep fingers and other body parts away.
S033 
CAUTION: 
Hazardous energy present. Voltages with hazardous energy might cause heating when shorted with 
metal, which might result in spattered metal, burns, or both. 
Attention: 
•  Go over “Installation Guidelines” on page 107 to ensure that you work safely.
•  Turn off the server and peripheral devices and disconnect the power cords and all external cables (see 
“Power off the server” on page 12).
Watch the procedure. A video of this procedure is available from the following links: 
• 
https://www.youtube.com/playlist?list=PLYV5R7hVcs-C6QgmsUMRG6ul0bHzrGmsG
•  https://list.youku.com/albumlist/show/id_54461099
Procedure
Step 1.  Disconnect the external LCD diagnostics handset cable. 
Figure 44. Disconnecting the external LCD diagnostics handset cable
Chapter 4. Hardware replacement procedures 127