Epson TM-J8000 Spezifikationen PDF herunterladen (Seite 63)

Rev. A Outline of Operation 2-37

TM-J8000/J8000P Technical Manual

Confidential

Air pressure sensor

The air pressure sensor is mounted on the Main circuit board. The printing control is performed

according to the ambient pressure of the printer. The pressure specification for this printer is as

follows:

Pressure (Altitude): 700 to 1050 hPa (approximately

–20 m to 2000 m height above the sea level)

RTC and lithium battery

RTC backed up by a charging-type lithium battery is mounted on the Main circuit board. The

printer controls the control operations such as head cleaning according to the RTC time

information. The time setting of RTC is not required.

I/F board Unit

The I/F-Board Unit controls communication between the host computer and the TM-J8000.

Three different board units are available, as follows:

•UB-S01:RS-232 compatible serial interface

•UB-S02:RS-422 compatible serial interface

•UB-P02:IEEE1284 compatible parallel interface

Power circuit board assembly

The power-board assembly generates the four voltages: +5V, +24BV, +35V, and +37V. These

voltages are passed to the main board unit and then used to power the various circuits on the

main board unit, as indicated in the Table below.

Table 2-2 Power output voltage Applications

Mechanism-

driver

U2H IJCOM Custom IC, DC35V,

0.008A

Power control driver and output signal for ink jet

head

Sensor U4H PRS – Pressure sensor

Battery BAT1 – DC3V, 0.05Ah Lithium battery, for RTC

Voltage Applications

+5 V •Logic circuitry

•Fan-assembly drive circuit

+24 V •Mechanism assembly (for autocutter)

•Drawer kick

•Customer display

•I/F circuit board unit

+35V •Mechanism assembly drive

+37 V •Head-unit drive circuit

Block Location Signals on

diagram

Description Main Operation

1 2 ... 58 59 60 61 62 63 64 65 66 67 68 ... 189 190

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