Cartridge Detection; Cartridge Life Detection - Canon MF735C Series Service Manual

■ Memory
Description
This machine detects/records the cartridge usage status, etc. by reading/writing data stored in the memory by the DC Controller.
If the memory cannot be detected, "Cartridge Communication Error. A counterfeit or non-Canon cartridge may be in use." is
displayed.

■ Cartridge Detection

Execution Condition/Timing
• At power-on
• When the Front Cover is closed
Description
The DC Controller detects whether a cartridge is installed according to the change in primary charging current. The DC Controller
notifies the Main Controller of the absence of a cartridge if it judges there is no cartridge.
Display on the Control Panel:
Toner Cartridge Not Inserted

■ Cartridge Life Detection

Description
The DC Controller notifies the Main Controller when cartridge consumption reaches the specified value.
Upon reception of the notification the Main Controller displays a warning or a message that the cartridge has reached the end of
its life.
Toner level*1
Detected to (location)
Message (machine opera-
tion)
*1: Select the following to check the remaining toner level.
• Status Monitor > Device Information > Cartridge Information
*2: Whether to display or hide warnings can be specified in the menu.
*3: The threshold value to display a warning can be specified in the menu.
*4: The operation when the cartridge has reached the end of life can be specified in service mode.
*5: The reference value of cartridge life (Photosensitive Drum, Developing Unit, and Waste Toner) can be specified in service
mode.
Service Mode
• Setting of the behavior when the cartridge reaches the end of its estimated life
COPIER > OPTION > FNC-SW > CRG-PROC
• Setting of the reference values for replacement of the Photosensitive Drum, Developing Assembly, and Waste Toner (Bk)
COPIER > OPTION > FNC-SW > CRGLF-K
• Setting of the reference values for replacement of the Photosensitive Drum, Developing Assembly, and Waste Toner (Y/M/
C)
COPIER > OPTION > FNC-SW > CRGLF-CL
• ON/OFF of display of the screen for setting the threshold value for preparation of the cartridge
COPIER > OPTION > DSPLY-SW > CRGLW-LV
Additional Functions Mode/Menu
• Setting of whether to display or hide warnings
Menu > Preferences > Display Settings > Display Timing for Cartridge Prep. Notif.
• Setting of the threshold value to display a warning
Menu > Preferences > Display Settings > Display Timing for Cartridge Prep. Notif. > Custom
Warning display*2
Differs depending on the setting*3
Memory
Prepare cartridge.
0%
Memory
End of Cartridge Lifetime
33
2. Technical Explanation (Device)
End of life display*4, *5