User Manual

5-20
Interface Interface
Buzzer
RS-423 board
Driver/ receiver
Driver/ receiver
(Centronics)
MPU
Reset
Power stop
Multisensor
Control board (main board)
Thermal
+34V check
+34V check
+5V +34V
OPLSI LSI1
D-RAM
(Data, etc.)
ROM
(CG)
ROM
(Programs)
Address
Data
Alarm detector
DriverDriverDriver
Ribbon shift motor (option)
Carriage motor
Paper feed motor
Sensors and switch
Sensor boardPrinting mechanism
Print head
Driver
Color
Push buttons and LEDs
Control panel Power supply
HDLSI
Figure 5.19 Controller block diagram