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164 Appendix A Specifications ENWW
Acoustical specifications
Note Configuration tested: The HP LaserJet 9050 printing simplex from Tray 3 at 50 ppm using
A4 paper, and the HP LaserJet 9040 printing simplex from Tray 3 at 40 ppm using A4 paper.
Operating environment
Declared per ISO 9296
Sound power level
1
HP LaserJet 9050
Sound power level
2
HP LaserJet 9040
Printing (50 ppm) L
WAd
= 7.2 Bels (A) [72 dB(A)]
Ready L
WAd
= 5.6 Bels (A) [56 dB(A)]
Printing (40 ppm) L
WAd
= 7.0 Bels (A) [dB(A)]
Ready L
WAd
= 5.6 Bels (A) [dB(A)]
Sound pressure level
3
(Bystander position)
HP LaserJet 9050
Sound pressure level
4
(Bystander position)
HP LaserJet 9040
Printing (50 ppm) L
pAm
= 56 dB(A)
Ready L
pAm
= 40 dB(A)
Printing (40 ppm) L
pAm
= 54 dB(A)
Ready L
pAm
= 39 dB(A)
1.Values current as of October 16, 2003. Values subject to change, see www.hp.com/support/
lj9050_lj9040 for current information.
2.Values current as of October 24, 2004. Values subject to change, see www.hp.com/support/
lj9050_lj9040 for current information.
3.Values current as of October 16, 2003. Values subject to change, see www.hp.com/support/
lj9050_lj9040 for current information.
4.Values current as of October 24, 2004. Values subject to change, see
www.hp.com/support/
lj9050_lj9040 for current information.
Operating temperature 50°F to 91°F (10°C to 32.5°C)
Relative humidity 10% to 80%
Storage temperature -40°F to +60°F
Storage humidity 15% to 90%
Speed, in pages per
minute (ppm)
50 ppm (HP LaserJet 9050 series
printer) or 40 ppm (HP LaserJet 9040
series printer)
Expandable memory Up to 512 MB total, using optional
accessory memory DDR DIMMs