iii
CHAPTER IV MAINTENANCE AND TROUBLESHOOTING.......................... IV-1
1. INTRODUCTION ..............................................................................................................IV-1
1.1
Initial Check........................................................................................................................ IV-1
1.2
Basic Procedure ................................................................................................................. IV-2
2. CONSUMABLE PARTS....................................................................................................IV-3
2.1
Drum Unit........................................................................................................................... IV-3
2.2
Toner Cartridge .................................................................................................................. IV-3
2.3
Periodical Replacement Parts............................................................................................. IV-3
3. IMAGE DEFECTS ............................................................................................................IV-4
3.1
Image Defect Examples ..................................................................................................... IV-4
3.2
Troubleshooting Image Defects .......................................................................................... IV-5
3.3
Location of High-voltage Contacts and Grounding Contacts.............................................. IV-19
3.4
Location of Feed Roller Shaft and Grounding Contacts..................................................... IV-20
4. PAPER JAM ...................................................................................................................IV-21
5. TROUBLESHOOTING MALFUNCTIONS.......................................................................IV-22
6. INSPECTION MODE ......................................................................................................IV-27
6.1
Incorporated Inspection Modes......................................................................................... IV-27
6.2 Error
Codes...................................................................................................................... IV-29
APPENDICES
1. Serial No. Descriptions ......................................................................................................A-1
2. Connection Diagram, HL-820/1020 ...................................................................................A-2
3. Connection Diagram, HL-1040 ..........................................................................................A-3
4. Connection Diagram, HL-1050 ..........................................................................................A-4
5. Main PCB Circuit Diagram, (HL-820/1020/1040), (1/2)......................................................A-5
6. Main PCB Circuit Diagram, (HL-820/1020/1040), (2/2)......................................................A-6
7. Main PCB Circuit Diagram, (HL-1050), (1/5)......................................................................A-7
8. Main PCB Circuit Diagram, (HL-1050), (2/5)......................................................................A-8
9. Main PCB Circuit Diagram, (HL-1050), (3/5)......................................................................A-9
10. Main PCB Circuit Diagram, (HL-1050), (4/5)....................................................................A-10
11. Main PCB Circuit Diagram, (HL-1050), (5/5)....................................................................A-11
12. Panel Sensor PCB Circuit Diagram .................................................................................A-12
13. Low-voltage Power Supply PCB Circuit Diagram, HL-820/1020/1040 (110 - 120V) ........A-13
14. Low-voltage Power Supply PCB Circuit Diagram, HL-820/1020/1040 (220 - 240V) ........A-14
15. Low-voltage Power Supply PCB Circuit Diagram, HL-1050 (110 - 120V) ........................A-15
16. Low-voltage Power Supply PCB Circuit Diagram, HL-1050 (220 - 240V) ........................A-16
17. High-voltage Power Supply PCB Circuit Diagram............................................................A-17
18. How to Know Drum Unit Life & Page Counter .................................................................A-18
19. Diameter / Circumference of Rollers ................................................................................A-20
Summary of Contents for HL-1020
Page 1: ......
Page 36: ...II 20 Fig 2 22 shows the CDCC interface circuit Fig 2 22 HL 1050 ...
Page 37: ...II 21 1 3 10 Engine I O Fig 2 23 shows the engine interface circuit Fig 2 23 HL 820 1020 1040 ...
Page 38: ...II 22 Fig 2 24 shows the engine interface circuit Fig 2 24 HL 1050 ...
Page 67: ...III 18 4 PACKING Fig 3 32 Documents Accessory carton Pad Pad Printer Bag Carton ...
Page 101: ...CODE UK4007000 B48K312CIR NAME V 5 Appendix 5 Main PCB Circuit Diagram HL 820 1020 1040 1 2 ...
Page 102: ...Appendix 6 Main PCB Circuit Diagram HL 820 1020 1040 2 2 CODE UK4007000 B48K312CIR NAME A 6 ...
Page 103: ...Appendix 7 Main PCB Circuit Diagram HL 1050 1 5 CODE UK4041000 B512001CIR NAME A 7 ...
Page 104: ...Appendix 8 Main PCB Circuit Diagram HL 1050 2 5 CODE UK4041000 B512001CIR NAME A 8 ...
Page 105: ...Appendix 9 Main PCB Circuit Diagram HL 1050 3 5 CODE UK4041000 B512001CIR NAME A 9 ...
Page 106: ...Appendix 10 Main PCB Circuit Diagram HL 1050 4 5 CODE UK4041000 B512001CIR NAME A 10 ...
Page 107: ...Appendix 11 Main PCB Circuit Diagram HL 1050 5 5 CODE UK4041000 B512001CIR NAME A 11 ...
Page 108: ...Appendix 12 Panel Sensor PCB Circuit Diagram CODE UK4010000 B48K303CIR NAME A 12 ...
Page 117: ...Apr 98 84U005BE0 PARTS REFERENCE LIST MODEL HL 820 1020 1040 1050 R LASER PRINTER ...
Page 122: ...1 1 1 MODEL HL 1050 84U 861 101 103 104 84U 862 106 6 4 5 MAIN PCB HL 1050 OTHERS ISRAEL 3 ...
Page 135: ...CONTENTS LOWER TRAY UNIT List 1 Drawing 2 ...
Page 137: ... 2 GENERAL DRAWING MODEL LT 24CL 54S X06 4 3 1 6 5 2 7 ...
Page 214: ......
Page 296: ...USER S GUIDE A 12 HP LaserJet IIP 6P EPSON FX 850 IBM Propritner XL EPSON FX 850 ...