HP 2420dn HP LaserJet 2400 Series - User Guide - Page 195
Acoustic emissions, Sound power level, Declared per ISO 9296
UPC - 829160290010
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Acoustic emissions Sound power and pressure level1 (HP LaserJet 2400 series) Sound power level Printing2 (HP LaserJet 2410) Printing2 (HP LaserJet 2420) Printing2 (HP LaserJet 2430) Ready (HP LaserJet 2410) Declared per ISO 9296 LWAd= 6.6 Bels (A) [66 dB(A)] LWAd= 6.7 Bels (A) [67 dB(A)] LWAd= 6.8 Bels (A) [68 dB(A)] Essentially Inaudible Ready (HP LaserJet 2420) Essentially Inaudible Ready (HP LaserJet 2430) Essentially Inaudible Sound pressure level Declared per ISO 9296 Printing2 (HP LaserJet 2410) Printing2 (HP LaserJet 2420) Printing2 (HP LaserJet 2430) Ready (HP LaserJet 2410) LpAm=52 dB (A) LpAm=53 dB (A) LpAm=53 dB (A) Essentially Inaudible Ready (HP LaserJet 2420) Essentially Inaudible Ready (HP LaserJet 2430) Essentially Inaudible 1Values subject to change. See www.hp.com/support/lj2410, http://www.hp.com/support/ lj2420, or http://www.hp.com/support/lj2430 for current information. 2HP LaserJet 2410 speed is 25 ppm A4 size. HP LaserJet 2420 speed is 29 ppm A4 size. HP LaserJet 2430 speed is 34 ppm A4 size. 3Configuration tested (HP LaserJet 2410): Base printer, simplex printing with A4 paper size. 4Configuration tested (HP LaserJet 2420): Base printer, simplex printing with A4 paper size. 5Configuration tested (HP LaserJet 2430): Base printer, simplex printing with A4 paper size. ENWW Acoustic emissions 183