Toshiba E-STUDIO520, Service Manual, Page: 339 / 592

March 2005 © TOSHIBA TEC e-STUDIO520/600/720/850 TROUBLESHOOTING
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[E260] Option LCF transport jam (paper not reaching registration sensor)
Is the intermediate transport sensor working?
(Perform the input check in the test mode: 03-[FAX]OFF/[1]/[A], OFF/[1]/[C], OFF/[2]/[C],
OFF/[3]/[C], OFF/[4]/[C])
l
l
l
!
NO
"
1) Are paper dusts accumulated on the intermediate transport sensor?
2) Check if the actuator of the sensor is working normally.
3) Check if the harness is not damaged.
4) Check if the connector is disconnected.
YES
Check the conditions of the feed roller, separation roller and pickup roller of the drawer in
use, and replace them if necessary.
Is there any paper before the registration sensor when the bypass unit cover is opened?
!
YES
"
Remove the paper.
NO
Is the registration sensor working?
(Perform the input check in the test mode: 03-[FAX]ON/[4]/[E])
l
l
l
l
l
l
l
l
!
NO
"
1) Check if the registration sensor connector is not disconnected.
2) Check if the connector J341 on the LGC board is not disconnected.
3) Check if the connector pins are not disconnected and the harness is
not open circuited.
4) Check if the conductor pattern on the LGC board is not short circuited
or open circuited.
5) Replace the registration sensor.
6) Replace the LGC board.
YES
Is the external LCF transport motor driving?
(Perform the output check in the test mode: 03-122/172)
l
l
l
!
NO
"
1) Check if the connector of the transport motor is not disconnected.
2) Check if the connectors J854 on the LCF board are not discon-
nected.
3) Check if there is any abnormality at the transport drive unit.
YES
Is the external LCF feed clutch working?
(Perform the output check in the test mode: 03-272)
l
l
l
l
l
l
l
l
l
l
l
l
!
NO
"
1) Check if the external LCF clutch connector is not disconnected.
2) Check if the connectors J851 on the LCF board are not discon-
nected.
3) Check if the connector CN346 on the LGC board is not disconnected.
4) Check if the connector pins are not disconnected and the harness is
not open circuited.
5) Check if the conductor pattern on the LCF and LGC boards is not
short circuited or open circuited.
6) Replace the external LCF feed clutch.
7) Replace the LCF board.
8) Replace the LGC board.