![background image](http://html.mh-extra.com/html/brother/hl-1020/hl-1020_service-manual_55568259.webp)
CHAPTER 5 MAINTENANCE
5-7
REPLACING THE DRUM UNIT
The printer uses a drum unit to create the print images on paper. If the
Drum
lamp is on, it indicates the drum unit is nearly at the end of its life.
We recommend you prepare a new drum unit to replace the current one.
Even if the
Drum
lamp is on, you may be able to continue to print
without replacing the drum unit for a while. If there is a noticeable
deterioration in the output print quality even before the
Drum
lamp
lights, then the drum unit should be replaced.
Drum
Alarm
Ready
Paper
Data
Toner
Fig. 5-11 Drum Unit Nearly at the End of its Life
!
Caution
When removing the drum unit, handle it carefully as it may contain
toner.
You should clean the printer when you replace the drum unit.
See
“CLEANING THE PRINTER” in this chapter.
✒
Note
The drum unit is a consumable, and it is necessary to replace it
periodically.
There are many factors that determine the actual drum life, such as
temperature, humidity, type of paper and toner that you use, the number
of pages per print job, etc.. The drum life is estimated at approximately
20,000 pages at 20 pages per job and 8,000 pages at 1 page per job. The
actual number of pages that your drum will print may be significantly less
than these estimates. Because we have no control over the many factors
that determine the actual drum life, we cannot guarantee a minimum
number of pages that will be printed by your drum.
For best performance, use only genuine Brother toner, and the product
should only be used in a clean, dust-free environment with adequate
ventilation.
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 ...