Figure 2-13. Development Device Section . . . . . . . . . . . . . . . . . . . . . ........2-8
Figure2-14. Fusing Drive Section . . . . . . . . . . . . . . . . . . . . . . . . ............2-8
Figure 2-15. Feeding Drive Section. . . . . . . . . . . . . . . . . . . . . . .............2-8
Figure 2-16. Feeding Drive Section (option) . . . . . . . . . . . . . . . . . . . . . ......2-8
Figure 2-17. Main Motor Drive Circuit . . . . . . . . . . . . . . . . . . . . . . ...........2-9
Figure 2-18. Paper Take Up Sensor and Paper Exit Sensor On/off Timing. .. 2-10
Figure 2-19. Fuser Control
Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. ...2-10
Figure 2-20. Temperature for Fuser Control procedure . . . . . . . . . . . . . .....2-11
Figure 2-21. Scanner Motor Control Circuit . . . . . . . . . . . . . . . . . . . . . .....2-11
Figure 2-22. Scanner Motor Driving Start Timing . . . . . . . . . . . . . . . . . . .....2-11
Figure 2-23. Laser Diode Drive Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Figure 2-24. /L DATA Generation Circuit . . . . . . . . . . . . . . . . . . . . . . . . .....2-12
Figure 2-25. Laser Emission Power AdjustmentTiming . . . . . . . . . . . . . .....2-12
Figure2-26. Laser Diode Error Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-13
Figure 2-27. High Voltage Supply Block Diagram . . . . . . . . . . . . . . . . . . . . . . . 2-13
Figure 2-28. Print Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. ...2-14
Figure2-29. PowerOn Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .....2-14
Figure 2-30. Print Sequence (Start) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .....2-14
Figure 2-31. Print Sequence (End) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .....2-15
Figure2-32. Fan MotorSpeed Control Timing . . . . . . . . . . . . . . . . . . . . .....2-15
Figure 2-33. Fan Motor Malfunction Search Timing . . . . . . . . . . . . . . . . .....2-15
Figure 2-34. Power Supply Circuit Block Diagram . . . . . . . . . . . . . . . . . .....2-15
Figure 2-35. Video Controfler Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..2-16
Figure 2-36. C108MAlN Board Block Diagram . . . . . . . . . . . . . . . . . . . . . ...2-16
Figure 2-37. Data Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .....2-18
Figure 2-38. Reset Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .....2-19
Figure 2-39. BusControl Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. ...2-19
Figure2-40. DRAM Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...2-20
Figure 2-41. Parallel lnterface circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..2-21
Figure 2-42. RS-232C Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .....2-21
Figure 2-43. C82907* ROM-B Board Block Diagram . . . . . . . . . . . . . . . .....2-22
List of Tables
Table2-l. Gears and Rollers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ......2-3
Table 2-2. Functions of C108 MAIN Board Main Elements . . . . . . . . . . .....2-17
Table 2-3. Functions of C82907* ROM-B Board . . . . . . . . . . . . . . . . . . . .....2-22
2-ii
Rev.A