Toshiba E-STUDIO520, Service Manual, Page: 353 / 592

March 2005 © TOSHIBA TEC e-STUDIO520/600/720/850 TROUBLESHOOTING
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5
5.1.2 Paper misfeeding
[E110] Transport jam during duplay printing (paper not reaching registration sensor)
(First page of printing)
Open the jam access cover. Is there paper in front of the registration sensor?
!
YES
"
Remove the paper.
NO
Is the registration sensor working?
(Perform the input check in the test mode: 03-[FAX]ON/[4]/[E])
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NO
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1) Check if the connector of the registration sensor is disconnected.
2) Check if the connector CN341 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 registration sensor.
6) Replace the LGC board.
YES
Is the transport motor (M17) rotating?
(Perform the output check in the test mode: 03-133,183)
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!
NO
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Replace the transport motor.
1) Check if the connector of the transport motor is disconnected.
2) Check if the connector CN327 on the LGC board is disconnected.
3) Check if the connector on the transport motor driving PC board is dis-
connected.
4) Check if the connector pins are disconnected and the harnesses are
open circuited.
5) Check if the conductor pattern on the LGC board is short circuited or
open circuited.
6) Check if the conductor pattern on the transport motor driving PC
board is short circuited or open circuited.
7) Replace the LGC board.
8) Replace the transport motor driving PC board.
YES
Check if the spring of the follower roller of the intermediate transport roller is working prop-
erly.
YES
Check the transport roller. Clean or replace it.