Brother International MFC-7050C Service Manual - Page 123
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[ 3 ] Communications related Trouble (1) No tone is transmitted. • Main PCB • NCU PCB • NCU harness Check: [ 4 ] Paper/document feeding related Trouble (1) Neither "COPY: PRESS COPY" nor "FAX: NO. & START" message appears although documents are set. (2) Document not fed. (3) Document double feeding (4) Document jam (5) Recording paper not fed. (6) Recording paper jam Check: • Sensors by using the maintenance-mode function code 32. (Refer to Chapter V, Section 3.5.) • Document front sensor actuator and document rear sensor actuator • Main PCB • ADF and its related sections • Scanner motor and its harness • Document feed rollers and their related gears • Main PCB • ADF parts • Scanner motor • CIS film • ASF related gears • Main PCB • Paper feeding mechanism • Gear drive unit VI - 6
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