POSIFLEX Business Machines PP3000 - Manual (Page 25)

TECHNICAL BACKGROUND
BLOCK DIAGRAM
Printer
mechanism
Control board
Parallel
interface
24 VDC
5 VDC
Paper
out
detector
Control
panel
board
Peripheral unit
Print head
Carriage motor
Detectors
Paper feed
motor
Driver
RAM 8KB
EPROM
32KB
CPU
Gate array
Driver
Data
(from host computer)
Serial
interface
Fig. 16 Circuit block diagram
PP3000 Series User’s Manual 4 - 1