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CONTENTS
CHAPTER I FEATURES AND SPECIFICATIONS............................................. I-1
1. FEATURES ......................................................................................................................... I-1
2. SPECIFICATIONS .............................................................................................................. I-3
2.1 Printing ........................................................................................................................................... I-3
2.2 Functions ....................................................................................................................................... I-3
2.3 Electrical and Mechanical .............................................................................................................. I-4
2.4 Paper Specification ........................................................................................................................ I-5
2.5 Print Delivery.................................................................................................................................. I-6
2.6 Paper ............................................................................................................................................. I-6
2.7 Effective Printing Area ................................................................................................................... I-7
3. SAFETY INFORMATION .................................................................................................... I-9
3.1 Laser Safety (110 - 120V Model only) ........................................................................................... I-9
3.2 FDA Regulations (110 - 120V Model only) .................................................................................... I-9
3.3 Caution for Laser Product (Warnhinweis für Laserdrucker)......................................................... I-10
CHAPTER II THEORY OF OPERATION........................................................... II-1
1. ELECTRONICS..................................................................................................................................... II-1
1.1 General Block Diagram................................................................................................................. II-1
1.2 Main PCB Block Diagram ............................................................................................................. II-2
1.3 Main PCB ...................................................................................................................................... II-3
1.3.1 CPU Core ....................................................................................................................... II-3
1.3.2 ASIC ............................................................................................................................... II-5
1.3.3 ROM ............................................................................................................................... II-7
1.3.4 Flash Memory ................................................................................................................. II-7
1.3.5 DRAM ............................................................................................................................. II-8
1.3.6 Optional RAM ................................................................................................................. II-9
1.3.7 Optional Serial I/O ........................................................................................................ II-10
1.3.8 EEPROM ...................................................................................................................... II-10
1.3.9 Reset Circuit ................................................................................................................. II-11
1.3.10 Parallel I/O .................................................................................................................. II-11
1.3.11 Engine I/O................................................................................................................... II-12
1.3.12 Paper Feed Motor Drive Circuit .................................................................................. II-14
1.3.13 USB I/O....................................................................................................................... II-14
1.4 Driver PCB .................................................................................................................................. II-14
1.5 SW Panel PCB............................................................................................................................ II-14
1.6 Power Supply .............................................................................................................................. II-15
1.6.1 Low-voltage Power Supply ........................................................................................... II-15
1.6.2 High-voltage Power Supply, SR PCB ........................................................................... II-16
2. MECHANICS....................................................................................................................................... II-17
2.1 Overview of Printing Mechanism ................................................................................................ II-17
2.2 Paper Transfer ............................................................................................................................ II-18
2.2.1 Paper Supply ................................................................................................................ II-18
Summary of Contents for HL-1070 - B/W Laser Printer
Page 1: ......
Page 20: ...II 4 Fig 2 4 ...
Page 24: ...II 8 1 3 5 DRAM Four 16Mbit DRAM x 16bit are used as the printer memory Fig 2 7 ...
Page 28: ...II 12 1 3 11 Engine I O Fig 2 14 and 2 15 show the engine interface circuit Fig 2 13 ...
Page 29: ...II 13 Fig 2 14 ...
Page 64: ...III 24 4 PACKING Fig 3 39 Documents Accessories Carton Pad Pad PE sheet Bag Pad Pad Carton ...
Page 96: ...CODE UK3958 000 B48K302 1CIR NAME A 3 Appendix 3 Main PCB Circuit Diagram 1 5 ...
Page 97: ...CODE UK3958 000 B48K302 1CIR NAME A 4 Appendix 4 Main PCB Circuit Diagram 2 5 ...
Page 98: ...CODE UK3958 000 B48K302 1CIR NAME A 5 Appendix 5 Main PCB Circuit Diagram 3 5 ...
Page 99: ...CODE UK3958 000 B48K302 1CIR NAME A 6 Appendix 6 Main PCB Circuit Diagram 4 5 ...
Page 100: ...Appendix 7 Main PCB Circuit Diagram 5 5 CODE UK3958 000 B48K302 1CIR NAME A 7 ...
Page 101: ...Appendix 8 Driver PCB Circuit Diagram CODE UK3634000 B48K280CIR NAME A 8 ...
Page 106: ...Appendix 13 SR PCB Circuit Diagram CODE UK3653000 B48K284CIR NAME A 13 ...
Page 107: ...Apr 98 54U011BE0 PARTS REFERENCE LIST MODEL HL 1070 R LASER PRINTER ...
Page 241: ...APPENDIX A 11 HP LaserJet 6P EPSON FX 850 IBM Proprinter XL EPSON FX 850 PC 850 ...