Muratec MFX-2500 Field Engineering Manual page 230

Symptom Step
1
2
3
4
Paper is at a
stop at the
vertical
transport
5
section.
Paper is at a
stop near the
Synchronizing
Rollers.
6
7
8
Check Item
Is the Vertical Transport Roller
or Roll deformed, worn, or
dirty with paper dust?
Is RSEN fully operational?
Check the input data using I/O
Check.
Does the voltage across
CN4A-2 on PWB-A (LCC) and
GND change from LOW to
HIGH when RSEN is blocked?
Check RCL for operation.
Does the voltage across
CN7A-4 on PWB-A (LCC) and
GND change from DC24V to
DC0V when the Start key is
pressed?
Check CL2 for operation.
Does the voltage across CN9-
1 on PWB-A and GND change
from DC24V to DC0V when
the Start key is pressed?
If the 3rd Drawer is LCC
Is PC2 fully operational?
Check the input data using I/O
Check.
If the 4th Drawer is LCC
Is S3 fully operational?
Check the input data using I/O
Check.
Does the voltage across
PJ3A-2B on PWB-A (Paper
feed unit) and GND change to
DC0V when S3 is blocked and
to DC5V when S3 is
unblocked?
4-16
Result Action
Clean or change the Vertical
YES
Transport Roller or Roll.
YES Check step 4 and onward.
Change PWB-A (LCC), PWB-
A (Paper feed unit), or PWB-A
YES
(Cassette Main Board), in that
order.
NO Change RSEN.
Change PWB-A (LCC), PWB-
A (Paper feed unit), PWB-A
NO
(Cassette Main Board), or
PWB-A, in that order.
NO Change PWB-A.
Check various parts for
possible overload and, if they
YES
are okay, change RCL, CL2,
or PWB-A, in that order.
Check the PC2 actuator for
NO operation and, if it is intact,
change PC2.
Check various parts for
possible overload and, if they
YES
are okay, change RCL, CL2,
or PWB-A, in that order.
Change PWB-A (Paper feed
YES unit) or PWB-A (Cassette Main
Board).
Check the S3 actuator for
NO operation and, if it is intact,
change S3.