Olivetti DF-790, Service Manual

Page: 86 / 155

3NB/3ND/3N0/3NK
1-4-33
(3)
Paper jams.
(Center-folding unit) Paper outside specifications is used. Use only paper conforming to the speci-
fications.
Check if the surfaces of the following roll-
ers are dirty with paper powder.
CF paper conveying roller 1
CF paper conveying pulley
CF paper conveying roller 2
CF paper conveying pulley
CF paper entry roller
CF paper entry pulley
CF paper conveying roller 3
CF paper conveying pulley
CF eject roller
CF eject pulley Clean with isopropyl alcohol.
Check if the contact between the CF
paper conveying roller 1,2,3 and CF
paper conveying pulley is correct. Check visually and remedy if necessary.
Check if the contact between the CF
paper entry roller and CF paper entry pul-
ley is correct. Check visually and remedy if necessary.
Check if the contact between the CF
eject roller and CF eject pulley is correct. Check visually and remedy if necessary.
(4)
Paper jams.
(Mail box) Paper outside specifications is used. Use only paper conforming to the speci-
fications.
Check if the surfaces of the following roll-
ers are dirty with paper powder.
Paper conveying rollers
Paper conveying pulleys
Eject roller
Eject pulley Clean with isopropyl alcohol.
Check if the contact between the Paper
conveying rollers and Paper conveying
pulleys is correct. Check visually and remedy if necessary.
Check if the contact between the Eject
roller and Eject pulley is correct. Check visually and remedy if necessary.
Abnormal noise is
heard.
Check if the rollers, pulleys and gears
operate smoothly. Grease the bushes and gears.
Problem Causes/check procedures Corrective measures
Service Manual Y113480-7