Table of Contents Page....4.1 Adjustment Types and Functions 45........4.1.1 Printer Driver 46........4.1.2 Engine Maintenance Utility 47....4.2 Adjustment When Replacing a Part 48........4.2.1 Setting LED Head Drive Time 49........4.2.2 Uploading and Downloading EEPROM Data 505 Periodical Maintenance5.1 Periodical Replacement Parts 515.2 Cleaning 52....5.2.1 Cleaning the LED Lens Array 536 Troubleshooting Procedures6.1 Troubleshooting Tips 546.2 Check Points Before Correcting Image Problems 556.3 Notes When Correcting Image Problems 566.4 Preparation Before Troubleshooting 576.5 Troubleshooting 58....6.5.1 Status Monitor Message List 59....6.5.2 Status Message Troubleshooting 60....6.5.3 Image Troubleshooting 61........(1) An image is light or blurred entirely 62........(2) Dark background density 63........(3) A blank paper is output 64........(4) Vertical black belt/stripe 65........(5) Cyclic defect 66........(6) A blank paper is output 67........(7) Poor fusing 68........(8) Vertical white belt/stripe 69........Contents - Figure 6-4 70........Contents - Figure 6-5 717 Wiring Diagram7.1 Interconnect Signal Diagram 727.2 PCB Layout 73....7.2.1 Main Control Board (U8S PCB) 74....7.2.2 High-Voltage Power Supply Board 758 Parts ListCover Assy Upper 76Base Frame Unit 77Heat Assy 78Base Plate Unit 79A Local PrintingLocal Printing 80B Parallel InterfaceParallel Interface 81C Maintenance UtilityOutline of Maintenance Utility 82Detail of Each Function 83....4.1 Engine Menu Setting 84....4.2 Engine Counter 85....4.3 Printer Status 86....4.4 Test Print 87....4.5 Option 88
