Epson LQ 1050 Technical Manual - Page 43

Figure 2-29. Data Transmission Timing 2. -35 Figure 2-30. Serial Data Flow 2. . -36 Figure 2-31. DIP Switch Circuit 2-37 Figure 2-32. Memory Back-up Circuit 2. -38 Figure 2-33. Carriage Motor Control Block Diagram 2-41 Figure 2-34. GA(E05A15HA) Operation Diagram 2-42 Figure 2-35. GA(E05A16GA) Operation Diagram 2-43 Figure 2-36. Carriage Motor Drive Circuit Block Diagram 2-44 Figure 2-37. Carriage Motor Drive Sequence 2-45 Figure 2-38. Carriage Motor Drive Circuit Block Diagram 2-47 Figure 2-39. Carriage Motor Control Circuit 2-48 Figure 2-40. High Speed Skip Operation 2-50 Figure 2-41. Home Position Seek Operation 2-51 Figure 2-42. Home Position Seek Phase States 2-52 Figure 2-43. Paper Feed Motor Drive Circuit Block Diagram 2-53 Figure 2-44. GA(E05A15HA) Function for Paper Feed Motor ....... 2-54 Figure 2-45. Phase Excitation System 2.-54 Figure 2-46. Paper Loading/Ejecting Operation 2-57 Figure 2-47. Plunger Mechanism 2. -58 Figure 2-48. Plunger Drive Circuit 2. -58 Figure 2-49. Relationship Between Transistors and Plunger ........ 2-59 Figure 2-50. Printhead Central Circuit Block Diagram 2-60 Figure 2-51. Print Drive Pulse Width 2. -61 Figure 2-52. Half-dot Protection Circuit 2. -62 REV.-A LIST OF TABLES Table 2-1. Board Connector Summary 2-2 Table 2-2. Power Supply Application 2. -11 Table 2-3. Pin Function of CPU 2. -27 Table 2-4. Pin Function fo GA(E05A15HA 2-29 Table 2-5. Pin Function of GA(E05A16GA 2-31 Table 2-6. ST-RAM Conditions 2. -38 Table 2-7. 2-2 phase Excitation 2. -46 Table 2-8. 1-2 phase Excitation 2.-4. 6 Table 2-9. Carriage Speed Modes 2. -49 Table 2-10. Acceleration/Deceleration Control 2-49 Table 2-11. 2-2 phase Excitation 2-55 2-iii !