62 Chapter 4 Printer Maintenance C4170-90959
Internal Cleaning
During the printing process, paper, toner and dust particles can accumulate inside the
printer. Over time, this buildup can cause print quality problems such as toner specks or
smearing. This printer has two internal cleaning modes that can correct and prevent these
types of problems.
Engine Cleaning
NOTE: For best results, use a transparency during this process. If a transparency is not available,
use copier grade paper and not bond or rough paper.
This process uses a transparency from Tray 1 to remove dust and toner from the paper path.
Use this process if toner specks or dots appear on printouts. This process will provide a
blank page which should be discarded.
NOTE: During the engine cleaning process, the printer pulls the transparency into the printer and
then stops. This is not a jam. The transparency will be slowly stepped through the printer to
complete the engine cleaning.
Figure 4-1 Print Sample for Engine Cleaning
To Start Engine Cleaning
1 Make sure the printer is turned on and in the ready state. Load a transparency in Tray 1.
2 Press and hold the G
O
and J
OB
C
ANCEL
buttons until all lights flash. This will take about
10 seconds. Release the buttons when the lights flash.
3 Press the G
O
button.
4 Discard the blank page produced from the engine cleaning process.
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