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Problem
Causes/check procedures
(27)
Defective DF timing
An original jams in
switch.
the SRDF* is indi-
cated during copy-
ing (a jam in the
Check if the original feed
original feed/con-
motor malfunctions.
veying section).
Jam code 71
(28)
Defective DF timing
An original jams in
switch.
the SRDF* is indi-
cated during copy-
ing (a jam in the
Defective original feed
original feed sec-
switch.
tion).
Jam code 72
Defective original switch-
back switch.
(29)
Defective DF timing
An original jams in
switch.
the SRDF* is indi-
cated during copy-
ing (a jam in the
original conveying
section).
Jam code 73
(30)
Defective original switch-
An original jams in
back switch.
the SRDF* is indi-
cated during copy-
ing (a jam in the
Defective DF timing
original switchback
switch.
section 1).
Jam code 75
Check if the original con-
veying motor malfunctions.
(31)
Defective original switch-
An original jams in
back switch.
the SRDF* is indi-
cated during copy-
ing (a jam in the
original switchback
section 2).
Jam code 76
*Optional.
Corrective measures
Run maintenance item U244 and turn the DF timing switch on
and off manually. Replace the switch if indication of the corre-
sponding switch on the operation panel is not displayed in re-
verse.
Run maintenance item U243 and select the original feed motor
on the operation panel to be turned on and off. Check the status
and remedy if necessary.
Run maintenance item U244 and turn the DF timing switch on
and off manually. Replace the switch if indication of the corre-
sponding switch on the operation panel is not displayed in re-
verse.
Run maintenance item U244 and turn the original feed switch on
and off manually. Replace the switch if indication of the corre-
sponding switch on the operation panel is not displayed in re-
verse.
Run maintenance item U244 and turn the original switchback
switch on and off manually. Replace the switch if indication of
the corresponding switch on the operation panel is not displayed
in reverse.
Run maintenance item U244 and turn the DF timing switch on
and off manually. Replace the switch if indication of the corre-
sponding switch on the operation panel is not displayed in re-
verse.
Run maintenance item U244 and turn the original switchback
switch on and off manually. Replace the switch if indication of
the corresponding switch on the operation panel is not displayed
in reverse.
Run maintenance item U244 and turn the DF timing switch on
and off manually. Replace the switch if indication of the corre-
sponding switch on the operation panel is not displayed in re-
verse.
Run maintenance item U243 and select the original conveying
motor on the operation panel to be turned on and off. Check the
status and remedy if necessary.
Run maintenance item U244 and turn the original switchback
switch on and off manually. Replace the switch if indication of
the corresponding switch on the operation panel is not displayed
in reverse.
2BH/J
1-5-25
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