Lexmark CS748de - Acoustic Specifications

1-8 Service Manual
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Acoustic specifications
All acoustic measurements are made in accordance with ISO 7779:1999—Accoustics: Measurement of airborne
noise emitted by information technology and telecommunications and reported in conformance with ISO 9296:
1988-04-15—Accoustics Declared noise emission values of computer and business equipment.
Operating mode
1 meter average sound pressure
(dBA)
Declared sound power level
(Bels)
C746
Idle 32 dB 4.8 Bels
Simplex printing (mono) 53 dB 6.8 Bels
Simplex printing (color) 54 dB 6.8 Bels
Duplex printing (mono) 54 dB 6.9 Bels
Duplex printing (color) 55 dB 6.9 Bels
Quiet mode printing (mono) 48 dB 6.3 Bels
Quiet mode printing (color) 48 dB 6.3 Bels
C748
Idle 32 dB 4.8 Bels
Simplex printing (mono) 54 dB 6.8 Bels
Simplex printing (color) 55 dB 6.9 Bels
Duplex printing (mono) 53 dB 6.9 Bels
Duplex printing (color) 55 dB 6.9 Bels
Quiet mode printing (mono) 47 dB 6.3 Bels
Quiet mode printing (color) 48 dB 6.3 Bels