1-6 Service Manual
5025-2xx, 4xx
Power and electrical specifications
The following table specified nominal average power requirements for the base printer configurations. All power
levels are shown in Watts (W). Maximum current is given in Amperes (A).
Low-voltage models
• 110 to 127 V ac at 47 to 63 hertz (Hz) nominal
• 99 to 137 V ac, extreme
100 voltage models
• 100 V ac at 47 to 63 hertz (Hz) nominal
• 90 to 110 V ac, extreme
Printing states
Lexmark C540n,
C543dn
Lexmark C544n,
and C544dn
Lexmark C546dtn
Average power while printing
Simplex 480 W 500 W 500 W
Automatic duplex* 340 W 340 W 340 W
Average power while idle
Power Saver 18 W 18 W 18 W
Ready 34 W 36 W 36 W
Off 0 W 0 W 0 W
* Automatic duplex is not supported on the C540n and C544n.
Typical electricity consumption
2
Model Mode
Power supply voltage (kwh)
100 V/50 Hz 115 V/60 Hz 230 V/50 Hz
Lexmark C540n and C543dn
TEC
1
3.73 kwh 3.5 kwh 3.92 kwh
TEC
1
—Eco Mode 3.41 kwh 3.30 kwh 3.55 kwh
Lexmark C544n and C544dn
TEC
1
3.97 kwh 4.06 kwh 4.20 kwh
TEC
1
—Eco Mode 3.57 kwh 3.42 kwh 3.57 kwh
Lexmark C546dtn
TEC
1
3.97 kwh 4.06 kwh 4.20 kwh
TEC
1
—Eco Mode 3.57 kwh 3.42 kwh 3.57 kwh
1
TEC—Typical Electricity Consumption.
2
Energy measurements are made according to ENERGY STAR Qualified Imaging Equipment Typical
Electricity Consumption Test Procedure, and are in units of kilowatts per week (kwh/week). Actual
electricity consumption will vary by device usage.