Olivetti PF-680 Service Manual page 34

3NH
Problem
(4)
A paper jam in the
paper feed section is
indicated during
copying (multiple
sheets in paper feed
section).
Jam code 21
1-4-4
Causes/check procedures
Broken feed switch 3 actua-
tor.
Defective feed switch 3.
Broken PF feed switch
actuator.
Defective PF feed switch.
Check if PF paper feed
clutch 1 malfunctions.
Electrical problem with PF
paper feed clutch 1.
Corrective measures
Check visually and replace switch.
Run maintenance item U031 and turn feed switch 3 on and off
manually. Replace the switch if indication of the corresponding
switch on the touch panel is not displayed in reverse.
Check visually and replace switch.
With 5 V DC present at YC2-8 on the PF main PWB, check if YC2-
7 on the PF main PWB remains low when the PF feed switch is
turned on and off. If it does, replace the PF feed switch.
Run maintenance item U247 and select PF paper feed clutch 1 on
t e touch panel to be turned on and off. Check the status and rem-
edy if necessary.
Check (see page 1-4-7).
Service Manual Y112350-4