Duplo DF-755, Instruction Manual

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4-10
Chapter 4 TROUBLESHOOTING GUIDE
4. Troubleshooting
When trouble has occurred, find the symptom from the table below and solve the trouble according to
the solution. If you cannot solve the trouble, contact your dealer.
Symptom Cause Solution
The machine does not start even
when the Start button is pressed.
The power cord is not inserted to
the wall socket.
Insert the power cord to the wall
socket.
The power is not on. Turn on the power switch.
( p.2-3)
There is no paper on the paper
feed table.
Stack paper on the paper feed
table. ( p.2-3)
Paper has not reached the guide
plate of the paper feed table.
Push in the paper until its lead
edge touches the guide plate.
( p.2-3)
A paper jam has occurred. Remove the jammed paper.
( p.4-6)
The top cover is open. Close the top cover.
A trouble has occurred inside the
machine.
Call your dealer.
When the Start button is pressed,
the paper feed rings rotate but no
paper is fed.
The paper feed table has been
lowered.
Lower the paper set lever to raise
the paper feed table.
( p.2-4)
The paper has not been fanned
well.
Fan the paper well. ( p.1-11)
The paper is curled. Straighten the paper curl.
The paper is thick. Set the paper feed pressure
adjustment knob to “Thick paper.”
( p.1-8)
The paper is outside the
specifications.
Use paper that meets
specifications. ( p.6-2)
The paper is not folded at the
proper folding position.
The paper folding plate is not
installed properly.
Install the paper folding plate
properly. ( p.1-6)
Static electricity has occurred in the
paper.
Fan the paper well. ( p.1-11)
Spray a commercially-available air
duster on the rubber roll.
Use thicker paper.
Paper is double-fed frequently. The paper feed pressure
adjustment knob is set to “Thick
paper.”
Set the paper feed pressure
adjustment knob to “Thin paper.”
( p.1-8, p.3-22)
The paper separator is dirty. Clean it with alcohol. ( p.5-4)
The sheets of paper are sticking
to each other and cannot be
separated.
Fan the paper well. ( p.1-11)
The paper is outside the
specifications.
Use paper that meets
specifications. ( p.6-2)
A trouble has occurred inside the
machine.
Call your dealer.