Lexmark C543DN Service Manual - Page 25

5025-2xx, 4xx Acoustics All acoustic measurements are made in accordance with ISO 7779-1999 and reported in conformance with ISO9296:1988-04-15. Operating mode 1-Meter average sound pressure at 4800 CQ Lexmark Lexmark C544dn, C544dw C540n Printing (simplex) Printing (automatic duplex) Idle Quiet Mode (simplex) 47 dBA N/A Inaudible 46 dBA Lexmark C543dn 47 dBA 50 dBA Inaudible 46 dBA Lexmark C544n 49 dBA N/A Inaudible 46 dBA Lexmark C544dn, C544dw 49 dBA 51 dBA Inaudible 46 dBA Lexmark C544dtn 49 dBA 51 dBA Inaudible 46 dBA Environment specifications Environment Specifications Operating Air temperature-operating 15.6 to 32.20° C (60 to 90.0° F) Air temperature-power off 10.0 to 43.30° C (50 to 110.0° F) Air relative humidity Relative Humidity 8 to 80% Wet bulb temperature-operating 22.80° C (73.0° F) maximum Wet bulb temperature-power off 26.70° C (80.10° F) maximum Altitude 0-3,048 meters (10,000 ft.) Atmospheric pressure 74.6 kPa Ambient operating environment* 15.6 to 32.2° C (60 to 90° F) and 8% to 80% RH Ship / Storage Cartridges -40 to 43.3° C (-40 to 110.0° F) Printer with cartridges -40 to 43.3° C (-40 to 110.0° F) Printer without cartridges -40 to 43.3° C (-40 to 110.0° F) Air relative humidity Relative Humidity 8 to 80% Altitude 10,300 meters (34,000 feet) Wet bulb temperature-power off 26.70° C (80.10° F) Maximum * In some cases, performance specifications (such as paper OCF, EP cartridge usage) are specified to be measured at an ambient condition. General information 1-7