Brother International IntelliFax-3550 Service Manual - Page 148

COPY nor FAX: NO. &amp, Refer to V,

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[ 3 ] Communications related Trouble (1) No tone is transmitted. • Main PCB • NCU PCB 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) Recording paper not fed. Check: • Sensors by using the maintenance-mode function No. 32. (Refer to Chapter V, Section 3.8.) • Actuators of the document front and rear sensors • Main PCB • ADF and its related sections • Scanner motor and its harness • Document feed rollers and their related gears • Main PCB • ADF parts • Nip-related parts • Multi-purpose sheet feeder • Drum unit • Heat-fixing unit • Gear drive unit • Main PCB VI - 14

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VI –
14
[ 3 ]
Communications related
[ 4 ]
Paper/document feeding related
(1)
No tone is transmitted.
•
Main PCB
•
NCU PCB
Trouble
Check:
Trouble
Check:
(1)
Neither “COPY: PRESS
COPY” nor “FAX: NO. &
START” message appears
although documents are set.
•
Sensors by using the maintenance-mode function No. 32.
(Refer to Chapter V, Section 3.8.)
•
Actuators of the document front and rear sensors
•
Main PCB
(2)
Document not fed.
•
ADF and its related sections
•
Scanner motor and its harness
•
Document feed rollers and their related gears
•
Main PCB
(3)
Document double feeding
•
ADF parts
•
Nip-related parts
•
Multi-purpose sheet feeder
•
Drum unit
•
Heat-fixing unit
•
Gear drive unit
•
Main PCB
(4)
Recording paper not fed.