HP LaserJet M9040M9050 Multifunction Printer series - Manual (Page 266)

Acoustic emissions
Table C-5 Sound power level 1 , 2
Sound power level Declared per ISO 9296
Printing 3 L
WAd
= 7.4 Bels (A) [74 dB(A)]
Ready Essentially Inaudible
1 Values are based on preliminary data. See www.hp.com/go/ljm9040mfp/regulatory or www.hp.com/go/ljm9050mfp/
regulatory for current information.
2 Configuration tested: Base unit printing and scanning continuous with ADF on A4 paper with no output device.
3 Print speed is 50 ipm HP LaserJet M9050 MFP and 40 ipm HP LaserJet M9040 MFP.
Table C-6 Sound pressure level 1 , 2
Sound pressure level Declared per ISO 9296
Printing/Copying 3 L
pAm
=58 dB (A)
Ready Essentially Inaudible
1 Values subject to change. See www.hp.com/support/ljm9040mfp or www.hp.com/support/ljm9050mfp for current information.
2 Configuration tested: Base unit printing and scanning continuous with ADF on A4 paper with no output device.
3 Print speed is 50 ipm HP LaserJet M9050 MFP and 40 ipm HP LaserJet M9040 MFP.
Operating environment
Table C-7 Necessary conditions
Environmental condition Recommended Allowed
Temperature (device and print cartridge) 17.5° to 25.0°C (63° to 77°F) 0° to 40°C (32° to 104°F)
Relative humidity 30% to 70% 0% to 95%
NOTE: Optimum performance of the device is assured under the recommended temperature and
humidity specifications. Print quality might deteriorate and occurrences of paper jams might increase
when the device is operated withing the allowed temperature and humidity specifications.
252 Appendix C Specifications ENWW