Panasonic KX-FLM652CX Service Manual page 190

KX-FLM652CX
7.11.9. Detecting New Drum Units
Purpose
To investigate the actual number of printed papers with the drum units
(Investigating how the returned sets´ drum units were used)
Method
Whether the drum unit is new or old should be judged by detecting the turn delay of Mixing Paddle (Toner detection sensor).
• • • • When shipping the drum unit, the mixing paddle gear is set to the position that has the space of more than one turn (max.
600).
• • • • After the main motor starts, when the toner detection signal is not varied within the fixed time (max. 4.5 sec), the drum unit
is found new.
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