Mechanical Problems - Olivetti DF-790 Service Manual

1-4-4 Mechanical problems

If the part causing the problem was not supplied, use the unit including the part for replacement.
Problem
(1)
Paper jams.
(Bridge unit)
(2)
Paper jams.
(Finisher)
Y113480-7
Causes/check procedures
Paper outside specifications is used.
Check if the surfaces of the following roll-
ers are dirty with paper powder.
Paper conveying roller
Paper conveying pulley
Feedshift roller
Feedshift pulley
Eject roller 1,2
Eject pulley 1,2
Check if the contact between the paper
conveying roller and paper conveying
pulley is correct.
Check if the contact between the feed-
shift roller and feedshift pulley is correct.
Check if the contact between the eject
roller 1,2 and eject pulley 1,2 is correct.
Paper outside specifications is used.
Check if the surfaces of the following roll-
ers are dirty with paper powder.
Paper entry roller
Paper entry pulley
Middle roller
Middle pulley
Main tray eject roller
Eject pulley
Left sub tray feed roller
Feed pulley
Left sub tray eject roller
Eject pulley
Check if the contact between the paper
entry roller and paper entry pulley is cor-
rect.
Check if the contact between the middle
roller and middle pulley is correct.
Check if the contact between the Main
tray eject roller and eject pulley is correct.
Check if the contact between the left sub
tray feed roller and feed pulley is correct.
Check if the contact between the Left sub
tray eject roller and eject pulley is correct.
Use only paper conforming to the speci-
fications.
Clean with isopropyl alcohol.
Check visually and remedy if necessary.
Check visually and remedy if necessary.
Check visually and remedy if necessary.
Use only paper conforming to the speci-
fications.
Clean with isopropyl alcohol.
Check visually and remedy if necessary.
Check visually and remedy if necessary.
Check visually and remedy if necessary.
Check visually and remedy if necessary.
Check visually and remedy if necessary.
1-4-32
3NB/3ND/3N0/3NK
Corrective measures
Sevice Manual