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Service Guide OKIPAGE8w Chapter 0 Introduction Front Cover OKIPAGE 8w LED PAGE PRINTER Adobe Acrobat printable reference copy of the OKIDATA Service Training Manual. 05/17/99 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 Page Service Guide OKIPAGE8w 0 Introduction Preface 1 Configuration Configuration ...1.1 System Configuration ...1.2 Printer Configuration ...1.3 Specification ...1.4 Safety Standards ...1.4.1 Certification Label ...1.4.2 Warning Label 2 Operation Description 2.0 Operation Description 2.1 Main Control Board 2.2 Power Supply Unit 2.3 High-Voltage Power Supply Board 2.4 Electro-Photographic Processor 2.5 Electro-Photographic Process ...2.5.1 Explanation of Each Process Operation 2.6 Paper Jam Detection 2.7 Toner Low Detection 2.8 Cover Open 2.9 Detecting ID existence 3 Parts Replacement Parts Replacements ...3.1 Precautions for Parts Replacement ...3.2 Parts Layout ...Upper Cover Assy ...Base Frame Unit ...Base Plate Unit ...3.3 Replacing Parts ...3.3.1 Hopper Plate ...3.3.2 LED Head and Head Spring ...3.3.3 Transfer Roller ...3.3.4 Upper Cover Assy ...3.3.5 High-Voltage Power Supply Board (P2H/P6L) ...3.3.6 Top Cover Assy and Flat Cable Assy ...3.3.7 Paper Holder ...3.3.8 Side Plate M and Idle Gear ...3.3.9 Heat Assy ...3.3.10 Drive Shaft E (Eject) and Eject Roller ...3.3.11 Pressure Roller B (Back Up Roller) ...3.3.12 Separator Guide ...3.3.13 Pulse Motor (Main) ...3.3.14 Hopping Shaft Assy ...3.3.15 Resist Roller ...3.3.16 Paper Sensor E, Paper Sensor Exit and Toner Sensor Assy ...3.3.17 Base Plate 4 Adjustment 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 Table of Contents Page 4.0 Adjustment ...4.1 Adjustment Types and Functions ...4.1.1 Printer Driver ...4.1.2 Engine Maintenance Utility ...4.2 Adjustment When Replacing a Part ...4.2.1 Setting LED Head Drive Time ...4.2.2 Uploading and Downloading EEPROM Data 5 Periodical Maintenance 5.1 Periodical Replacement Parts 5.2 Cleaning ...5.2.1 Cleaning the LED Lens Array 6 Troubleshooting Procedures 6.1 Troubleshooting Tips 6.2 Check Points Before Correcting Image Problems 6.3 Notes When Correcting Image Problems 6.4 Preparation Before Troubleshooting 6.5 Troubleshooting ...6.5.1 Status Monitor Message List ...6.5.2 Status Message Troubleshooting ...6.5.3 Image Troubleshooting ...(1) An image is light or blurred entirely ...(2) Dark background density ...(3) A blank paper is output ...(4) Vertical black belt/stripe ...(5) Cyclic defect ...(6) A blank paper is output ...(7) Poor fusing ...(8) Vertical white belt/stripe ...Contents - Figure 6-4 ...Co