OKI ML4410 Matrix Printer

Service Guide for PM4410 Chapter 0 Introduction Front Cover

Pacemark 4410 The PACEMARK® 4410 is simply the most reliable, powerful and durable forms printer in its class. Stand-alone or shared by a workgroup, this heavy-duty impact printer can tackle your most demanding forms work-flow and then some. Adobe Acrobat printable reference copy of the OKIDATA Service Training Manual. 05/13/98 Note: This Adobe Acrobat version of the Okidata Service Training Manual was built with the pictures rendered at 300 dpi, which is ideal for printing, but does not display well on most displays.

Table of Contents

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Service Guide for PM4410 0 Introduction Preface 1 Specifications 1.1 Basic System Configuration 1.2 Printer Specifications 1.3 Option Specifications 1.4 Basic Specifications 2 Operation 2.1 Electrical Operation ....2.1.1 Summary ....2.1.2 Microprocessor and the peripheral circuit ....2.1.3 Initialization ....2.1.4 Interface Control ....2.1.5 Parallel Interface Control ....2.1.6 Serial Interface ....2.1.7 Printing Operation ....2.1.8 Printhead control ....2.1.9 Print Compensation Control ....2.1.10 Space motor control ....2.1.11 Line feed ....2.1.12 Bail, tractor, switching, AG, ribbon motor control ....2.1.13 Operation Panel ....2.1.14 Alarm circuit ....2.1.15 Power supply circuit 2.2 Mechanical Operation ....2.2.1 Printhead mechanism and operation ....2.2.2 Spacing operation ....2.2.3 Head gap adjusting ....2.2.4 Ribbon drive ....2.2.5 Paper Feed Mechanism ....2.2.6 Bail Feed Mechanism ....2.2.7 Paper End Detection Mechanism 3 Disassembly 3.1 Precautions for Parts Replacement 3.2 Parts Layout 3.3 How to Change Parts ....3.3.1 Cover-Assy-Access / Cover-Assy-Side (R) / Cover-Assy-Side (L) / Cover-Assy-Front / Frame-Assy-Rear / Plate-Front (stuck) ....3.3.2 Printer Unit ....3.3.3 Control Block [Control Board (PMA Printed Board), Driver Board (PDA Printed Board)] ....3.3.4 Power Supply Unit ....3.3.5 PG Cooling Fan ....3.3.6 I/F Board (PHA Printed Board) ....3.3.7 AG Board (PGA Printed Board) / Connector Cord ....3.3.8 AG Motor Assy ....3.3.9 Mini Pitch Belt ....3.3.10 Tractor Change Motor Assy ....3.3.11 Bail Motor Assy ....3.3.12 LF Motor Assy ....3.3.13 Head Cooling Fan 1 ....3.3.14 Head Cooling Fan 2 ....3.3.15 Space Motor ....3.3.16 Operator Board (POA Printed Board) ....3.3.17 Ribbon Feed Assy ....3.3.18 Printing Head ....3.3.19 Head Cable ....3.3.20 Ribbon Protector ....3.3.21 Space Motor Fan ....3.3.22 Junction Board ....3.3.23 Cover Open Switch Assy / Ribbon Rotation Sensor ....3.3.24 Interlock Switch / Interlock Switch Cord Assy ....3.3.25 Knob Bracket Assy ....3.3.26 Space Belt ....3.3.27 AG Sensor Frame / Start Searching Sensor

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Table of Contents

....3.3.28 Paper Jam Sensor Assy / Bail PE Sensor Assy ....3.3.29 Sprocket Assy (L) (R) (Front Tractor) ....3.3.30 Sheet Feeder Assy (L) Rear / Sheet Feeder Assy (R) Rear ....3.3.31 Bail Assy 4 Adjustments Adjustments 5 Maintenance 5.1 Cleaning 5.2 Lubrication ....(28) Option Interface 6 Maintenance 6.1 Items to Check Before Repair 6.2 Troubleshooting Table 6.3 Lamp and LCD Display 6.4 Part Layout 6.5 Connection ....(1) Printhead ....(2) Line feed motor ....(3) Space motor ....(4) Ribbon motor ....(5) Path-change motor ....(6) Auto-gap motor ....(7) Bail motor ....(8) Space Fan1 ....(9) Space Fan2 ....(10) Head Fan1 ....(11) Head Fan2 ....(12) Power Fan ....(13) Space slit sensor ....(14) Auto-gap sensor ....(15) Cover Open Switch / Ribbon Jam Sensor ....(16) Optical Sensor ....(17) Sheet Top Locating Sensor / Auto Gap Core ....(18) Paper Jam Sensor / Bail Paper End Sensor ....(19) Bail Open Switch / Front Tractor On Switch ....(20) Front Tractor Paper End Switch ....(21) Rear Tractor Paper End Switch ....(22) Power Supply Unit ....(23) Operation Panel ....(24) Standard Interface ....(25) Short Plug ....(26) Others ....(27) MUPIS Interface (Option) ....(29) Continuous-Form Paper Cutter (Option) 7 Trou