FUJITSU SPARC T5120 - Manual (Page 23)

Preface xxi
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.
Use care when removing the bus bar screws to avoid touching a heat
sink, which can be dangerously hot.