— 22 —
5-5-2. BLOCK DIAGRAM
I/O
CONTROLLER
12.5 MHz
PWD
RTS
CTS
DTR
TXD/RXD
3.3 V 5 V
RESET
from HardReset
from CPU PORT
LOAD
×
2
CLOCK
×
2
DATA
×
2
BUZZ
MCR
BUZZER
MENU
SHEET
KC
×
12
KI
×
14
TXD (RS-232C)
INPUT
OUTPUT
BackLight ON/OFF
KEY
12
×
14
DRAWER
×
2
REAR
DISP
DALLAS
KEY
EPROM
4 Mbit
OPTION
iButton: 1Wired Line
BUS
LCD
VRAM
256 Kbit
LCDC
6 MHz
For Character Generator
Menu Sheet x 4
Drawer drive x 2
Drawer x 2
BUS outside WAIT
Back up power for 1/4 VGA VRAM only
Summary of Contents for QT-2100
Page 1: ...SERVICE MANUAL ELECTRONIC CASH REGISTER without price QT 2100 EX 590 FEB 2002 ...
Page 70: ... 68 12 PCB LAYOUT Front side IC7 IC8 IC12 IC15 IC14 IC11 IC4 IC1 ...
Page 84: ... 82 KEY BOARD2 E441379 QT 2100 EX 590 CASIO COMPUTER CO LTD Model Name Drawing No ...
Page 85: ... 83 E341303 Drawing No Name CONNECTOR BOARD1 Model QT 2100 EX 590 CASIO COMPUTER CO LTD ...
Page 86: ... 84 Drawing No CONNECTOR BOARD2 Name E441378 Model QT 2100 EX 590 CASIO COMPUTER CO LTD ...
Page 87: ... 85 E441380 KEYSHEET SW QT 2100 EX 590 CASIO COMPUTER CO LTD Drawing No Model Name ...
Page 88: ... 86 E441381 ARCNET BOARD Model QT 2100 EX590 CASIO COMPUTER CO LTD Drawing No Name ...
Page 91: ... 89 REMOTE DISP E441383 Drawing No Name CASIO COMPUTER CO LTD Model QT 2100 EX 590 ...
Page 94: ... 92 46 45 50 39 56 57 41 42 54 34 55 58 48 51 59 49 40 53 52 44 43 47 38 37 36 35 ...
Page 111: ... 109 17 DRAWER DL 3618 ...
Page 113: ... 111 18 DRAWER DL 3619 ...