Toshiba E-STUDIO520, Service Manual, Page: 346 / 592

e-STUDIO520/600/720/850 TROUBLESHOOTING March 2005 © TOSHIBA TEC
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[E540] Transport jam during duplex printing (paper not reaching horizontal transport sensor-3)
[E550] Paper remaining jam at paper transport path
Is the Horizontal transport sensor-3 working?
(Perform the input check in the test mode: 03-[FAX]OFF/[9]/[H])
l
l
l
l
l
l
l
l
l
l
l
!
NO
"
1) Check if the connector of the Horizontal transport sensor-3 is not dis-
connected.
2) Check if the connector CN334 on the LGC board is not discon-
nected.
3) Check if the connector pins are not disconnected and the harness is
not open circuited.
4) Check is the conductor pattern on the LGC board is not short- or
open-circuited.
5) Replace the Horizontal transport sensor-3.
6) Replace the LGC board.
YES
Check the condition of the roller at the horizontal transport section and clean or replace it.
Open the cover of the unit/area whose picture is blinking on the control panel. Is there any
paper on the transport path?
!
YES
"
Remove the paper.
NO
Is the sensor in the jamming area working? (Perform the input check in the test mode: refer
to the following table)
l
l
l
l
l
l
l
l
!
NO
"
1) Check if the connector of the sensor is disconnected.
2) Check if any of the connectors on the LGC board is disconnected.
3) Check if the connector pins are disconnected and the harnesses are
open circuited.
4) Check if the conductor pattern on the LGC board is short circuited or
open circuited.
5) Replace the sensor.
6) Replace the LGC board.
YES
1) Check if any multiple paper is fed from the drawer.
2) Replace the LGC board.