Epson TM-J8000 Spezifikationen PDF herunterladen (Seite 61)

Rev. A Outline of Operation 2-35

TM-J8000/J8000P Technical Manual

Confidential

The following table describes the function of each of the principal elements on the main board

unit.

Table2-1 Major components and functions

Block Location Signals on

diagram

Description Main Operation

CPU

peripheral

area

U1 – – CPU, I/O port

U2 – Custom gate array I/O port (dip-switch, RTC, mechanism control,

etc.)

U3 – Custom gate array I/O port (CPU clock supply, SIO, mechanism

control, etc.)

U4 – 8Mbit (512K * 16

bits)

Program memory

U5 – 16Mbit (2048K * 8

bits)

Font memory

U15 – 256Kbit (32K * 8 bits;

serial I/O)

NV memory

U6 – 16Mbit (1024K * 16

bits)

D-RAM

U7 RTC – RTC

X1 – 32.788KHz RTC clock

X2 – 14MHz System clock (for U3)

X3 – 10MHz System clock (for U3)

X4 – 1MHz System clock (for U2)

U11 nRESET – System reset

U2I – – Host-interface reset control

Power-

F1 154002 2A Fuse for mechanism power

F1H – – PTC thermistor, for inkjet-head power

U2 DM24V DC24V, 400mA For customer-display power

U8 IF24V DC24V, 100mA Power for UIB (Universal Interface Board)

U10 +24V DC24V, 0.25A Power for autocutter

Q4 +35V DC35V, 1.2A Semiconductor switch for mechanism power

supply

Q1 VCC DC5V, 0.7A Power semiconductor switch for control circuit

Q11 VHDIN DC37V, 0.02A Power semiconductor switch for ink jet head

U2M – DC15V, 0.01A Not used

U1K DKP DC24V, 1A Power for drawer

U5S – DC6V, 0.1A Power for power-switch (front of printer)control

circuit

U6S PC5V DC5V, 0.1A Power for power-switch (front of printer)control

circuit

U7S – – Power (VCC) time-limit energizing timer for control

circuit

1 2 ... 56 57 58 59 60 61 62 63 64 65 66 ... 189 190

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