Brother International MFC-9880N Service Manual - Page 138
Sensor Operational Check, DFDRCVRSTNPOFH, MNCS P2FC
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3.8 Sensor Operational Check n Function This function allows you to check whether the 13 sensors--document front sensor, document rear sensor, cover sensor, registration sensor, toner sensor, paper ejection sensor, CCD HP sensor, manual insertion sensor, cassette sensor, jam sensor, document tray open sensor, 2nd registration sensor*, and 2nd cassette sensor*--operate correctly. (*These sensors are provided for models supporting a 2nd paper cassette.) n Operating Procedure (1) Press the 3 and 2 keys in this order in the initial stage of the maintenance mode. The machine beeps 1100 Hz and 400 Hz tones cyclically through the following volumes for testing the speaker. NOTE: To stop beeping, press the Menu key. If the sensing status are as listed below, the LCD will show the following two character strings (which can be switched by pressing the Fax Start key for machines w/ fax or the Sort key for machines w/o fax): "DFDRCVRSTNPOFH " and "MNCS P2FC" "DFDRCVRSTNPOFHR2" and "MNCSC2P2FC" on models having a 2nd paper cassette Given below is the relationship between the LCD indication, sensor names and sensor status. LCD Sensors Sensing status DF Document front sensor DR Document rear sensor CV Cover sensor RS Registration sensor TN Toner sensor PO Paper ejection sensor FH CCD HP sensor R2 2nd registration sensor* No document detected. No document detected. Front cover closed. No paper detected. No toner detected. No paper jam. CCD unit placed in home position No paper detected. MN Manual insertion sensor CS Cassette sensor C2 2nd cassette sensor* P2 Jam sensor FC Document tray open sensor No paper detected. No paper cassette loaded. No paper cassette loaded. No paper jammed. Document tray closed. (*These indications will always be displayed in models not equipped with a 2nd paper cassette.) V - 15