Epson DM-M820, Technical Reference Manual

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3-6 Hardware Specifications Rev. I
24V model
Input voltage/current: 100 - 127 VAC / 4A
200 - 240 VAC / 2A
Input frequency: 50 ± 3 Hz / 60 ± 3 Hz
Cooling fan: Air intake type, fan rotation speed is automatically changed,
depending on the temperature in the power supply unit.
MTBF: 200,000 hours
Precautions:
2) When the protective circuit of the voltage power unit performs a shutdown, the protective
circuit keeps working for a while. When this happens, unplug the power cable and wait for
about 15 seconds; then plug the cable back in.
Power supply capacity for external devices
Total power available to devices connected to the interface boards in the PCI slot, COM3/4,
keyboard/mouse, and USB are as follows. Current drain must not exceed the capacity shown
for each supply voltage: +5V, +3.3V, +12V, and -12V.
Each port has the following current limitation:
Power Supply Capacities to Each Port
Power supply Used for Capacity
+5 VDC PCI slot, COM ports, keyboard/mouse, USB 2.0 A
+3.3 VDC PCI slot 1.0 A
+12 VDC PCI slot, COM ports 1.0 A
-12 VDC PCI slot 0.02 A
Port Voltage Current supply capacity Remarks
COM port +5 VDC 500 mA each (peak 1 A/100 ms) Total current of +5
VDC and +12 VDC
must not exceed the
value shown at left.
+12 VDC 500 mA each (peak 1 A/100 ms)
USB port +5 VDC 500 mA each (peak 1 A/100 ms) --
Keyboard and mouse +5 VDC 500 mA (peak 1A / 100 ms) --
Power Supply for 24V model +24 VDC 2A (peak 1A / 100 ms) --