The up time for each power state of the machine can be checked with SP8-961 (Electricity Status). It is also output on the SMC sheet.
SP  | Name  | Description  | 
|---|---|---|
SP8-961-001  | Ctrl Standby Time  | Cumulative time of Engine OFF mode, Quiet mode, and Standby mode  | 
SP8-961-002  | STR Time  | Cumulative time of STR mode  | 
SP8-961-003  | Main Power Off Time  | Cumulative time of state in which the power plug is connected to the outlet but the main power is off  | 
SP8-961-004  | Reading and Printing Time  | Cumulative time of state in which both the plotter engine and scanner engine are running or warming up  | 
SP8-961-005  | Printing Time  | Cumulative time of the state in which the plotter engine is running  | 
SP8-961-006  | Reading Time  | Cumulative time of the state in which the scanner engine is running  | 
SP8-961-007  | Eng Waiting Time  | Cumulative time of state in which the power state of the engine is Standby state  | 
SP8-961-008  | Low Power State Time  | Not used for this machine  | 
SP8-961-009  | Quiet State Time  | Cumulative time of the state in which the power state of the engine is Quiet state  | 
SP8-961-010  | Heater Off State Time  | Cumulative time of the state in which the power state of the engine is Fusing OFF state  | 
SP8-961-011  | LCD on Time  | Cumulative time of the state in which the backlight of the LCD is on.  |