Before removing a CMOD from the chassis, place the server in Standby power mode.
To remove a CMOD, see How to Remove a CPU Module (CMOD) in Sun Server X2-8 (formerly Sun Fire X4800 M2) Service Manual.
To place the server in Standby power mode, see How to Power Off the Server in Sun Server X2-8 (formerly Sun Fire X4800 M2) Service Manual.