4 - 1
TM
CHAP. 4
TECHN…
TECHNICAL BACKGROUND

BLOCK DIAGRAM

Fig. 16 Circuit block diagram
Serial
interface
Data
(from host computer)
Driver
Gate array
CPU
EPROM
32KB
RAM 8KB
Driver Paper feed
motor
Detectors
Carriage motor
Print head
Peripheral unit
Control
panel
board
Paper
out
detector
24 VDC
5 VDC
Parallel
interface
Control board
Printer
mechanism