Quenching - Ricoh B286 Service Manual

Around the Drum
After you put the empty bottle back in the machine, if toner is not detected by the used
toner bottle sensor, then the machine returns to normal operation mode. If toner is detected,
the used toner bottle motor turns on for 30 seconds. If toner is still detected, then the
machine stops and the bottle must be removed.

6.4.7 QUENCHING

The quenching lamp [A], an array of LEDs, is behind the LPH [B].
After the drum [A] is cleaned by the cleaning blade, light from the quenching lamp removes
unwanted charge on the drum. This prepares the drum for the subsequent copy cycle.
The quenching lamp switches on and off with the drum motor (the lamp stays on while the
OPC drum turns).
SM 6-29 B286/B289