Service manual

6-18
[ 3 ] Communications related
Trouble Check:
(1) No tone is transmitted. • Main PCB
•NCU PCB
[ 4 ] Paper/document feeding related
Trouble Check:
(1) Neither "COPY: PRESS
COPY" nor "FAX: NO. &
START" message appears
although documents are set.
• Sensors by using the maintenance-mode function code 32.
(Refer to CHAPTER 5, Subsection 5.3.9.)
• Document front sensor actuator and document rear sensor
actuator
• 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
(4) Document jam • Scanner motor
(5) Recording paper not fed. • ADF-related gears
• Main PCB
(6) Recording paper jam • Paper feeding mechanism
• Eccentric bushing R and L (Alignment with markings made
on the main chassis)