Noise(measured in accordance with ISO 7779, declarednoise emission in accordance with ISO 9296)LwAd (Declared A-weighted sound power level (1 B = 10 dB))- MF249dw / MF247dwDuring standby mode: Inaudible*5During printing: 6.6 B or less (1-sided)During printing: 6.6 B or less (2-sided)- MF236nDuring standby mode: Inaudible*5During printing: 6.5 B or less (1-sided)LpAm (Declared A-weighted emission sound pressure level (Bystanderposition))- MF249dwDuring standby mode: Inaudible*5During printing: Approx. 51 dB (1-sided)During printing: Approx. 52 dB (2-sided)- MF247dwDuring standby mode: Inaudible*5During printing: Approx. 52 dB (1-sided)During printing: Approx. 52 dB (2-sided)- MF236nDuring standby mode: Inaudible*5During printing: Approx. 51 dB (1-sided)Acceptable Documents Supported Document Types(P. 648)Acceptable Paper Stock Paper(P. 650)Printable Range Printable Area(P. 651)Scan Range Scan Area(P. 649)*1 The current value displayed on the rating label indicates average current consumption.*2 Warm-up time may vary depending on the use conditions and environment of the machine.*3 The value indicates the mass of the main unit including toner cartridges.*4 MF249dw / MF247dw only.*5 Indicates that the sound pressure level of each bystander position is below the ISO 7779 absolute criteria for the background noise level.Appendix646
