Oki 720, 721 Replacement Parts, Replacement Part

Replacement Parts

Replacement Part

Access Cover, ML 720

Access Cover, ML 721

AC Cord

Poll-up Roller Assembly, ML 720

Poll-up Roller Assembly, ML 721

Platen Knob

Printhead

Ribbon, Black

66	Ploblem Solving, Maintenance, & Service

Contents

Page Page Important Safety Instructions Page Contents Chapter 4: Working with Software Appendix A: Specifications Appendix B: Menu Selections Appendix D: ASCII Character Codes Appendix E: Interfacing Introduction Page Chapter 1: Installation Unpacking Removing Shipping Retainers Installing Ribbon Cartridge Making Connections Connection with Computer Page Connection with Power Chapter 2: Loading Paper Bottom feed (continuous forms only, thickness to 0.017” [0.44mm]) Loading Single-SheetPaper Page Page Loading Rear-FeedPaper Page Page Page Page Page Page Paper Handling Tear Feature Forms Tear-offFeature Paper Park Feature Switching Paper Paths Page Chapter 3: Operation Control Panel Page Print Mode Indicator Lights Buttons Page Button Page Menu Mode Sample Menu Summary of Menu Settings Valid 1 sec by Actual Page Length, by Menu Setting Bi-directional 64K Buffer Print +5V Invalid, Valid Menu Mode Indicator Lights Menu Mode Buttons Resetting Menu to Factory Defaults Performing Basic Tasks Selecting Print Quality Selecting Character Pitch Testing Your printer Font Test Rolling ASCII Test Hexadecimal Dump Test Resetting Top of Form Using Bar codes UPC A Bar Code UPC E Page Interleaved2 of Postnet Chapter 4: Working with Software Basic Terminology Printer Commands Emulations Printer Drivers Compatible Printer Drivers (DOS) Windows Printer Drivers Page Chapter 5: Problem Solving Maintenance, & Service Problem Solving …I’ve installed a brand new ribbon and the printing is smeared and streaked Problem: Solution: …there are dots missing in my printouts … the Alarm light is on and the Character Pitch 15 light is flashing …I need to load paper, but the Alarm light is not on not Maintenance Replacing the Ribbon Cartridge do NOT remove clear plastic ribbon shield Page Clearing Paper Jams Page Page Single Sheet Feed Jams Button Feed Jams Cleaning the Housing Accessories Pull Tractor, Top-Mount Roll Paper Stand Serial Interface Replacement Parts Appendix A: Specifications Resident Font Receive Buffer Size Reliability Paper Specifications Paper type Feed Weight Width range Dimensions (W x D x H) Weight Environmental Requirements Electrical requirements Specifications subject to change without notice Appendix B: Menu Selections Bin Appendix B: Menu Selections None 8 Bits Ready/Busy SSD 9600 bps Explanation of Menu Items Bottom Margin Busy Line Busy Time Centering Position Character Set DSR Signal DTR Signal Emulation Mode ESC SI Pitch Form Line Spacing Operator Panel Function Page Length Page Length Control Page Width Power Saving Print DEL Code Print Mode Print Registration Print Suppress Effective Serial Data 7/8 Bits SI Select Pitch (10 CPI) SI Select Pitch (12 CPI) Size Skip Over Perforation Page Appendix C: Printer Commands IBM Proprinter Printer Commands (cont.) Character Style Custom Characters Cut-SheetFeeder Control Appendix C: Priner Commands Horizontal Control Vertical Control Vertical Control (cont.) ESC A n Command Miscellaneous Epson FX Printer Commands Cut Sheet Feeder Control Graphics (cont.) Justification OKI Microline (ML) Printer Commands Page Page Page Appendix D: ASCII Character Codes Lower ASCII Character Sets Page Page Page Upper ASCII Character Sets Page Page Page Epson International Character Substitutions IBM International Character Substitutions MICROLINE International Character Substitutions Code Page Character Sets Page Page Appendix E: Interfacing Pin Assignments for Parallel Interface Signals Universal Serial Bus (USB) Installing the Serial Interface Page Pin Assignments for Serial Interface Signals Page Oki Data Corporation 4-11-22,Shibaura, Minato-ku Tokyo 108-8551Japan Tel: (81) 3 5445 Fax: (81) 3 5445