Oki Pacemark 4410 Service Handbook

Also see for PACEMARK 4410: User guide Specifications Maintenance manual Service manual

Contents

40496501TH Draft Version 3 /CONTENTS1. CONFIGURATION ..................................................................................... 51.1 Basic System Configuration............................................................... 51.2 Printer Specifications ......................................................................... 61.3 Option Specifications ......................................................................... 71.4 Basic Specifications ........................................................................... 82. THEORY OF OPERATION ........................................................................ 112.1 Electrical Operation ........................................................................... 112.1.1 Summary ................................................................................................. 112.1.2 Microprocessor and the peripheral circuit ............................................... 112.1.3 Initialization .............................................................................................. 202.1.4 Interface control ....................................................................................... 212.1.5 Parallel Interface Control ......................................................................... 212.1.6 Serial Interface ........................................................................................ 222.1.7 Printing operation .................................................................................... 232.1.8 Printhead control ..................................................................................... 242.1.9 Print Compensation Control .................................................................... 262.1.10 Space motor control ................................................................................ 262.1.11 Line feed .................................................................................................. 272.1.12 Bail, tractor switching, AG, ribbon motor control ..................................... 282.1.13 Operation Panel ...................................................................................... 292.1.14 Alarm circuits ........................................................................................... 312.1.15 Power supply circuit ................................................................................ 332.2 Mechanical Operation ........................................................................ 342.2.1 Printhead mechanism and operation ....................................................... 342.2.2 Spacing operation ................................................................................... 362.2.3 Head gap adjusting ................................................................................. 372.2.4 Ribbon drive ............................................................................................ 402.2.5 Paper Feed Mechanism .......................................................................... 412.2.6 Bail Feed Mechanism .............................................................................. 452.2.7 Paper End Detection Mechanism ............................................................ 473. PARTS REPLACEMENT ........................................................................... 493.1 Precautions for Parts Replacement ................................................... 493.2 Parts Layout....................................................................................... 523.3 How to Change Parts......................................................................... 533.3.1 Cover-Assy-Access / Cover-Assy-Side (R) / Cover-Assy-Side (L)/Cover-Assy-Front / Frame-Assy-Rear / Plate-Front (stuck) ................ 543.3.2 Printer Unit .............................................................................................. 553.3.3 Control Block [Control Board (PMA Printed Board),Driver Board (PDA Printed Board)] ....................................................... 563.3.4 Power Supply Assy ................................................................................. 573.3.5 PG Cooling Fan ....................................................................................... 583.3.6 I/F Board (PHA Printed Board) ................................................................ 593.3.7 AG Board (PGA Printed Board) / Connector Cord .................................. 603.3.8 AG Motor Assy ........................................................................................ 613.3.9 Mini Pitch Belt .......................................................................................... 623.3.10 Tractor Change Motor Assy .................................................................... 633.3.11 Bail Motor Assy ....................................................................................... 643.3.12 LF Motor Assy ......................................................................................... 65