Filter
Top Products
If neither the PS12 or the PS13 receives light, the DC controller judges that the “transfer unit
is not present, OUT” and sends an error message to the formatter.
Figure 5-47.
Transfer unit detection
NOTE
If light is received only at one of the light receivers on the PS12 or P13, it will not be judged
as ITB unit OUT, but will be judged as the following errors.
Error in the PS12 only: Color misregistration sensor abnormality or, Error in the PS13 only:
Waste toner full warning
Transfer unit life detection
The printer detects whether the transfer unit is coming to the end of its life.
The DC controller monitors the accumulated rotation time of the drum motor (M3) for
detection of transfer unit life.
The DC controller writes the drum motor rotation time into the EEPROM in the DC controller
every specified time when the drum motor rotates. The EEPROM, that stores the
accumulated rotation time of the drum motor, judges that the transfer unit is at the end of its
life when the accumulated time exceeds a specified time and sends an error message to the
formatter.
Figure 5-48.
Transfer unit life detection control
ENWW Image formation system 169