USER’S GUIDE
CHAPTER 5 –10
ADJUSTING THE PRINT DENSITY
The print density dial is located inside the printer. You can use it to adjust
the amount of toner applied to the paper.
When the toner cartridge and drum unit are replaced, or if the operating
temperature and humidity are high or low, print conditions may change
causing darker or lighter printouts.
Use a screwdriver to turn the print density dial gently clockwise for darker
printouts and counterclockwise for lighter printouts. The dial has been
factory set to the middle position.
Fig. 5-17 Adjusting the Print Density Dial
Warning
After you have just used the printer, some internal parts of the printer
are extremely hot. When you open the top cover of the printer, never
touch the shaded parts shown in the following illustration.
High Temperature
Fig. 5-18 Inside the Printer
Summary of Contents for HL-720
Page 1: ...SERVICE MANUAL MODEL HL 720 730 730Plus R LASER PRINTER ...
Page 36: ...II 19 1 3 10 Engine I O HL 720 Fig 2 21 shows the engine interface circuit Fig 2 21 ...
Page 37: ...II 20 HL 730 730Plus Fig 2 22 shows the engine interface circuit Fig 2 22 ...
Page 61: ... Fig 3 18 2 4 1 1 1 ...
Page 92: ...SERVICE MANUAL MODEL HL 760 R LASER PRINTER ...
Page 109: ...II 8 1 3 4 DRAM Two 4M bit DRAMs x 16bits are used as the RAM Fig 2 6 ...
Page 113: ...II 12 1 3 10 Engine I O Fig 2 12 shows the engine interface circuit Fig 2 12 ...
Page 114: ...II 13 1 3 11 Paper Feed Motor Drive Circuit Fig 2 13 ...
Page 133: ...Appendix 2 Main PCB Circuit Diagram 1 3 CODE UK3227000 B48K272CIR 1 3 NAME ...
Page 134: ...Appendix 3 Main PCB Circuit Diagram 2 3 CODE UK3227000 B48K272CIR 2 3 NAME ...
Page 135: ...CODE UK3227000 B48K272CIR 3 3 NAME Appendix 4 Main PCB Circuit Diagram 3 3 ...