Citizen Systems iDP-3550, iDP-3551 user manual Appendix 1. Block Diagram, Centronics, Cpu, Rom, Ram

APPENDIX 1. BLOCK DIAGRAM

Parallel

(CENTRONICS

Compliant) Serial (RS-232C Compliant)

Interface

Paper Near

End

Control

OSC16MHz
	Winder
	Control
	Cutter
	Control
CPU	Drawer
	Control

Winder

(Option)

Auto

Cutter (iDP-3551 only)

Drawer

Printer Mechanism DP-654C

or DP-657G

Power Supply

120 V AC, 50/60 Hz

230 V AC, 50/60 Hz

Operation

Panel

Print Head Driver

DC Motor/ LF Solenoid/

CCSolenoid/ Drivers

Mechanism

Control

Signals/

PE Signal

Filter

DIP Switch

ROM

RAM

Battery

Back-up

Reset

Vp Vcc

Power

Supply