Toshiba E-STUDIO2008A, Service Manual, Page: 615 / 1016

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ERROR CODE AND TROUBLESHOOTING
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[E520] ADU transport jam (paper not reaching the ADU exit sensor
Classification Error content
Paper transport jam (ADU section) Jam not reaching the ADU exit sensor
Proce
dure
Check item Result Measure
Next
Step
1 Open the ADU. Is there
any paper in front of the
ADU exit sensor? Yes Remove the paper.
No 2
2 Is the ADU exit sensor
working?
(Perform the input check
in the test mode: 03-
[FAX]OFF/[1]/[E]) Yes 3
No • Check if the connector of the ADU exit
sensor is disconnected.
• Check if the connector CN311 on the LGC
board is disconnected.
• Check if the connector pins are
disconnected and the harnesses are open
circuited.
• Check if the conductor patterns on the LGC
board are short circuited or open circuited.
• Replace the ADU exit sensor.
• Replace the LGC board.
3 Is the ADU motor
working? (Perform the
output check in the test
mode: 03-119) Yes 4
No • Check if the connector of the ADU motor is
disconnected.
• Check if the connector CN402 and CN404
on the MOT/MOT2 board is disconnected.
• Check if the connector CN303 on the LGC
board is disconnected.
• Check if the connector pins are
disconnected and the harnesses are open
circuited.
• Check if the conductor pattern on the LGC
board is short circuited or open circuited.
• Replace the ADU exit sensor.
• Replace the MOT/MOT2 board.
• Replace the LGC board.
4 ADU • Check the rollers in the ADU. Replace them
if they are worn out.
Parts to be replaced Remark
ADU exit sensor
LGC board
ADU exit sensor
MOT board
MOT2 board
Rollers in the ADU