Olivetti d-Copia 1600 Service Manual page 110

2HA/2HB
Problem
(6)
An original jams in
the original convey-
ing section is indi-
cated during copying
(An original jam in
the original convey-
ing section 3).
Jam code 74
(7)
An original jams in
the original switch-
back section is indi-
cated during copying
(An original jam in
the original switch-
back section).
Jam code 75
(8)
Original jams fre-
quently.
1-4-14
Causes/check procedures
Broken DP timing switch
actuator.
Defective DP timing switch.
Check if the original con-
veying motor malfunctions.
Check if the switchback
feedshift solenoid malfunc-
tions.
Defective original switch-
back switch.
Check if the original con-
veying motor malfunctions.
Check if the switchback
feedshift solenoid malfunc-
tions.
An original outside the
specifications is used.
The DP forwarding pulley or
DP paper feed pulley is dirty
with paper powder.
The DP paper feed pulley
and DP separation pad do
not contact correctly.
Corrective measures
Check visually and replace DP timing switch if its actuator is bro-
ken.
Run maintenance item U244 and turn DP timing switch on and off
manually. Replace DP timing switch if indication of switch is not
light.
Run maintenance item U243 and select the original conveying
motor to be turned on and off. Check the status and remedy if nec-
essary.
Run maintenance item U243 and select the switchback feedshift
solenoid to be turned on and off. Check the status and remedy if
necessary.
Run maintenance item U244 and turn original switchback switch
on and off manually. Replace original switchback switch if indica-
tion of switch is not light.
Run maintenance item U243 and select the original conveying
motor to be turned on and off. Check the status and remedy if nec-
essary.
Run maintenance item U243 and select the switchback feedshift
solenoid to be turned on and off. Check the status and remedy if
necessary.
Use only originals conforming to the specifications.
Clean with isopropyl alcohol.
Check and remedy.