佳能ADVANCE DX 4945,4945i ,4935,4935i,4925,4925i英文维修手册
The machine is equipped with 2 power switches: main power switch and control energy saver key.
The machine goes on when the main power switch is turned on (i.e., other than in low power mode, sleep mode).
CAUTION:
Do not turn off the main power switch while the progress bar is indicated, during which access is made to the Storage. If deprived of power, the Storage can suffer a fault (E602).