HP LaserJet 4000 Service Manual - Page 17

7-24. Any Faint Print Condition 7-25. Faulty Registration 7-26. Vertical White Streaks 7-27. Right-Hand Text Missing 7-28. Small Voids Print 7-29. Random Horizontal Black Lines 7-30. Repetitive Defects 7-31. Smeared Print/Improper Fusing 7-32. Distorted Print 7-33. Black Pages with Horizontal White Stripes 7-34. Image Skew 7-35. Improperly Sized Image 7-36. Vertical Dark Streaks 7-37. Large Print Voids 7-38. Background Scatter 7-39. Bubble Print 7-40. White or Blank Pages 7-41. High Voltage Power Supply Assembly Summary 7-42. High Voltage System Checks 7-43. Communications Checks 7-44. Duplex Paper Jam Troubleshooting 7-45. Duplex Assembly Malfunctions 7-46. Duplex Photosensors, Solenoids, Motors 7-47. Duplex Assembly Connectors 8-1. Major Assemblies (1 of 2) 8-2. Major Assemblies (2 of 2) 8-3. External Covers 8-4. Top Cover Assembly (1 of 2) 8-5. Top Cover Assembly (2 of 2) 8-6. Internal Components (1 of 3) 8-7. Internal Components (2 of 3) 8-8. Internal Components (3 of 3) 8-9. Control Panel Assembly 8-10. Paper Input Unit (1 of 2) 8-11. Paper Input Unit (2 of 2) 8-12. Lifter Assembly 8-13. Main Switch Assembly 8-14. Main Motor Drive Train 8-15. Pickup Roller Drive Assembly 8-16. Job Offset Assembly 8-17. Registration Assembly 7-89 7-90 7-91 7-91 7-92 7-92 7-93 7-98 7-98 7-99 7-100 7-101 7-101 7-102 7-102 7-103 7-104 7-107 7-108 7-111 7-113 7-114 7-115 7-116 8-5 8-7 8-9 8-11 8-13 8-15 8-17 8-19 8-21 8-22 8-23 8-24 8-25 8-26 8-27 8-28 8-29 Contents-13