Ricoh FW780 Service Manual - Page 61

6.2 COLLECTION OF USED TONER [A] [D] [C] [C] [B] The toner collection coil [A], which is rotated by the main motor [B] through the gears [C], moves used toner from the cleaning unit to the toner collection bottle [D]. The toner collection bottle capacity is enough to hold used toner from making 1220 m copies. The CPU uses the copy quantity to detect the used toner overflow. The used toner overflow condition is detected when the copy length counter (SP52) reaches the used toner detection threshold setting (SP51, Default value: 1220m). When this condition occurs, "FULL" is indicated in the copy counter and copying is disabled. After disposing of the toner in the toner collection bottle and closing the paper path section, pressing of the Clear Modes/Stand by key should be done by customers themselves to clear the memory counter for the copy quantity. The memory for the copy quantity can be cleared using SP53. SP52 shows the length of copies made since the used toner was emptied. When "0" is input in SP53, the value of SP52 is cleared. A163 2-25 SM