Epson IR-320, Technical Reference Manual

Page: 316 / 340

7-8 Hardware Specifications Rev. C
❏
AC output Fuse
If the fuse has blown, remove and exchange the fuse in the fuse holder on the back of the
power supply.
❏
Electrical Capacity to External Devices
The total power capacities available to the devices that receive power supply from the board
inserted into the PCI slot; the serial ports COM1, COM2, COM5, and COM6; the keyboard/
mouse; and the USB port are shown below. Be sure the current consumptions do not exceed the
total power capacities listed below as to the voltages 5 V, +3.3 V, +12 V, –12 V, and +24 V (in the
same way as with the IR-320 but for +3.3 V).
Each of these ports is restricted to the capacity limits shown below.
CAUTION:
The USB port is not supported by Windows NT.
Lithium Battery
The IR-320 is internally equipped with a non-rechargeable Lithium Battery. This battery is used
for backing up the RTC and the CMOS RAM built in the RTC.
This is different from the IR-310.
Battery type CR-2032
Backup time 5 years
If the message “
” cmos check sum error”
“ appears every time the system is started up,
replace the battery.
External electrical capacity
Power supply Application Total capacity
+5 V DC PCI slot, COM ports, keyboard, USB 3.0 A
+3.3 V DC PCI slot 1.0 A
+12 V DC PCI slot, COM ports 1.5 A
–12 V DC PCI slot 0.3 A
+24 V DC Dedicated printer, external TM power supply, drawer, customer display 2.0 A
Electrical capacity of each port
Port Power supply Supply capacity Remarks
COM ports +5 V DC 500 mA each (peak at 1 A/100 ms) The total for all four ports must not
exceed the value shown on the left.
+12 V DC 500 mA each (peak at 1 A/100 ms)
USB port +5 V DC 500 mA each (peak at 1 A/100 ms) —
Keyboard +5 V DC 500 mA each (peak at 1 A/100 ms) —
Drawer +24 V DC 1 A —