Oki 790, 791 Replacement Parts, Replacement Part

Replacement Parts

Replacement Part

Access Cover, ML 790

Access Cover, ML 791

AC Cord

Poll-up Roller Assembly, ML 790

Poll-up Roller Assembly, ML 791

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 C: Commands–EpsonEmulation Appendix D: Commands–IBMEmulation Appendix E: ASCII Character Codes Appendix F: 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 Button Menu Mode Page Page Menu Mode Sample Menu Summary of Menu Settings Valid 1 sec by Menu Setting Bi-directional 64K Full Operation Yes 17.1 CPI 20 CPI Low Menu Mode Indicator Lights Menu Mode Buttons Resetting Menu to Factory Defaults Performing Basic Tasks Selecting Print Quality Selecting Character Pitch Typeface Spacing Style Testing Your printer 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 …ink smears on the paper when I print narrow columns …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 …the Print Quality and Character Pitch buttons on the front panel won’t work …static electricity causes the paper to stick Maintenance Replacing the Ribbon Cartridge do NOT remove clear plastic ribbon shield 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 Graphics Resolution: 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 8 Bin Appendix B: Menu Selections None 8 Bits Ready/Busy SSD 9600 bps Explanation of Menu Items Busy Line Busy Time Centering Position Character Set Code Page Emulation Mode Form Tear-Off Graphics Graphics Speed Page Length Page Length Control Page Width Paper out Override Parity Print Mode Print Registration Print Suppress Effective Proportional Spacing Protocol Size Skip Over Perforation Style Time Out Print Wait Tine Page Appendix C: Commands–EpsonEmulation Epson Commands Appendix C: Printer Commands Page Page Page Page Page Page Page Page Page Page Page (ASCII, Decimal, Hexadecimal) Notes Page Page Page Page Page Page Appendix D: Commands–IBMEmulation Appendix D: Printer Commands Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Appendix E: ASCII Character Codes ASCII Character Sets Page Page Page Code Page Page Appendix F: 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