Maintenance 413
Cleaning Inside the Printer
Cleaning the Color Toner Density (CTD) Sensor
Clean the Color Toner Density (CTD) sensor only when an alert for the CTD sensor is shown on the Printer Status
window or operator panel.
1 Turn off the printer and disconnect the power cord.
IMPORTANT:
• If the optional hard disk unit is not installed on your printer, note that the data in the memory are cleared when the printer
is turned off.
2 Push down the latch to open the rear cover.
3 Open the side cover.