Fujitsu SPARC ENTERPRISE T5140 Service Manual page 23

Caution – This indicates that surfaces are hot and might cause personal injury if
touched. Avoid contact.
Task Warning
Maintenance
Extremely hot
Some components on the motherboard might be hot. Use caution when
handling the motherboard, especially near the CPU heat sink.
FB-DIMMs and heat sinks on the motherboard may be hot.
If you touch the heat sink when removing the bus bar screw, you might
get burned.
Preface xxi