4-18
Improving the print quality
!
Caution
If the
Drum
LED is on you can clear a print quality problem by replacing the drum
unit with a new one. The Drum LED indicates that the drum unit is at the end of
life.
This section provides information on the following topics:
Image defect
examples
Recommendation
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
DEF
efg
C
c d
2 3
Faint
•
Check the printer's environment. Conditions such as humidity,
high temperatures, etc. may cause this print defect to occur.
•
If the whole page is too light, toner save mode may be on.
Disable toner save mode within the Printer Properties tab of the
Driver.
•
Try installing a new toner cartridge.
See “How to replace the
Toner cartridge” in Chapter 3.
•
Try installing a new drum unit.
See "How to replace the Drum
unit" in Chapter 3.
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
Gray background
•
Make sure that you use paper that meets the Brother’s
recommended specifications.
See “What kind of paper can I
use” in Chapter 1.
•
Check the printer's environment; high temperature and high
humidity conditions can increase the amount of background
shading.
•
Installing a new toner cartridge.
See "How to replace the Toner
cartridge" in Chapter 3.
•
Installing a new drum unit.
See "How to replace the Drum unit"
in Chapter 3.
Ghost
•
Make sure that you use paper that meets the specifications. A
rough surfaced paper, paper that has absorbed moisture or
thick media can cause the problem.
•
Make sure that you select the appropriate media type in the
printer driver.
See “What kind of paper can I use” in Chapter
1.
•
Try installing a new drum unit
.
See “How to replace the Drum
unit” in Chapter 3.
Содержание HL-1240
Страница 1: ......
Страница 45: ...CHAPTER 3 THEORY OF OPERATION 3 7 Fig 3 6 ...
Страница 47: ...CHAPTER 3 THEORY OF OPERATION 3 9 1 3 3 DRAM A 16M bit DRAM x 16 bits is used as the RAM Fig 3 9 HL 1240 ...
Страница 48: ...CHAPTER 3 THEORY OF OPERATION 3 10 Two 16M bit DRAMs x 16 bits are used as the RAM Fig 3 10 HL 1250 ...
Страница 102: ...CHAPTER 4 DISASSEMBLY AND RE ASSEMBLY 4 38 ...
Страница 110: ...CHAPTER 5 PERIODIC MAINTENANCE 5 8 ...
Страница 176: ...CODE UK4352000 B512040CIR 1 2 A 18 NAME Appendix 10 Main PCB Circuit Diagram HL 1240 1 2 ...
Страница 177: ...Appendix 11 Main PCB Circuit Diagram HL 1240 2 2 CODE UK4352000 B512040CIR 2 2 A 19 NAME ...
Страница 178: ...Appendix 12 Main PCB Circuit Diagram HL 1250 1 5 CODE UK4361000 B512049CIR 1 5 A 20 NAME ...
Страница 179: ...Appendix 13 Main PCB Circuit Diagram HL 1250 2 5 CODE UK4361000 B512049CIR 2 5 A 21 NAME ...
Страница 180: ...CODE UK4361000 B512049CIR A 22 NAME Appendix 14 Main PCB Circuit Diagram HL 1250 3 5 ...
Страница 181: ...CODE UK4361000 B512049CIR 4 5 A 23 NAME Appendix 15 Main PCB Circuit Diagram HL 1250 4 5 ...
Страница 182: ...CODE UK4361000 B512049CIR 5 5 A 24 NAME Appendix 16 Main PCB Circuit Diagram HL 1250 5 5 ...
Страница 183: ...Appendix 17 Engine PCB Circuit Diagram CODE UK4444000 B512059CIR A 25 NAME ...
Страница 192: ...INDEX vi ...
Страница 203: ...6 COVER MODEL HL 1240 HL 1250 84U Z01 Z02 060 8 7 15 1 12 12 12 9 11 11 8 6 2 5 10 16 13 17 4 3 3 2 12 14 ...
Страница 210: ... 15 14 ADJUSTING TOOL PRT 402 TOOL NO TOOL NAME REMARK PRT 402 TORX SCREW DRIVER MODEL HL 1240 HL 1250 84U Z01 Z02 ...
Страница 237: ...CHAPTER 1 ABOUT THIS PRINTER 1 19 1 Select manual feed mode in the printer driver Windows 95 98 and Windows 3 1 ...
Страница 321: ...A 12 HP LaserJet IIP HP LaserJet 6P HL 1250 only ...
Страница 323: ...A 14 HP LaserJet IIP 6P EPSON FX 850 IBM Proprinter XL EPSON FX 850 ...