Service manual

2 TROUBLESHOOTING BY PHENOMENON
7-4
DUPLO DF-755 86V-M12D0-0
2.1.2 Double-feed
1) Is the paper feed pressure adjustment knob set to "Thick paper?"
Yes:
Set the paper feed pressure adjustment knob to "Thin paper."
2) Is the paper separator dirty?
Yes:
Clean it.
Refer to "Chapter 1 > 6 USER MAINTENANCE."
3) Has the paper separator reached its end of life?
Refer to "Chapter 4> 2.2.1 Recommended spare parts A (Consumables)."
Yes:
Replace the paper separator.
Refer to "Chapter 3 >2.1.3 Removing the paper separator plate."
4) Are the paper feed rings dirty?
Yes:
Clean them.
Refer to "Chapter 1 > 6 USER MAINTENANCE."
5) Have the paper feed rings reached their end of life?
Refer to "Chapter 4> 2.2.1 Recommended spare parts A (Consumables)."
Yes:
Replace the paper feed rings.
Refer to "Chapter 3 >2.1.2 Removing the paper feed rings."
6) Is the solenoid properly adjusted?
Refer to "Chapter 5 > 1.4 Adjusting Solenoid."
No:
Adjust the solenoid.
7) Are there foreign particles on the following parts or is any of the parts deformed or broken?
•Solenoid (SOL1)
•Paper feed clutch
Yes:
Clean the parts or replace the deformed or broken part.
No:
Adjust the parts.
Refer to "Chapter 5 > 1.4
Adjusting Solenoid
."
2.1.3 Continuous-feed
1) Is the paper feed pressure adjustment knob set to "Thick paper?"
Yes:
Set the paper feed pressure adjustment knob to "Thin paper."
No: Adjust the paper feed pressure adjustment knob.
Refer to "Chapter 5 > 1.2 Adjusting the Paper Feed Pressure."
2.1.4 Skew-feed
1) Is the problem solved after adjusting the side guide?
The large clearance between the side guide and paper may cause skew.
Yes:
End.
2) Is the skew corrected after using the slant correction paper feed knob?
Yes:
End.
3) Are the paper feed rings dirty?
Yes:
Clean them.
Refer to "Chapter 1 > 6 USER MAINTENANCE."
4) Have the paper feed rings reached their end of life?
Refer to "Chapter 4> 2.2.1 Recommended spare parts A (Consumables)."