Toshiba e-STUDIO556 Service Manual page 611

8.3.3 Paper misfeeding
[E110] Transport jam during duplex 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])
NO 
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YES
Is the transport motor (M17) rotating?
(Perform the output check in the test mode: 03-133,183)
NO 
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YES
Check if the spring of the follower roller of the intermediate transport roller is working
properly.
YES
Check the transport roller. Clean or replace it.
(Second page or later of printing)
Leading edge of paper not reaching the fuser exit sensor.
YES  If the paper is damaged, remove the paper and check the followings.
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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.
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
disconnected.
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.
1. Check if the paper is skewed, and correct it if it is skewed.
2. Check the paper amount.
3. Check if the paper is not the one with printing on its back side.
4. Check if the width of the side guides of the drawer is too narrow.
5. Check the motor-related adjustment value.
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e-STUDIO556/656/756/856/557/657/757/857
ERROR CODE AND TROUBLESHOOTING
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