Toshiba E-STUDIO520, Service Manual, Page: 360 / 592

e-STUDIO520/600/720/850 TROUBLESHOOTING March 2005 © TOSHIBA TEC
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[E180] Option LCF misfeeding (paper not reaching Option LCF feed sensor)
Open the LCF front cover. Is there any paper in front of the LCF feed sensor?
!
YES
"
Remove the paper.
NO
Is the LCF feed sensor working?
(Perform the input check in the test mode: 03-[FAX]OFF/[5]/[D])
l
l
l
l
l
l
l
l
l
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l
!
NO
"
1) Check if the connector of the LCF feed sensor is disconnected.
2) Check if either of the connector J851 on the LCF board is discon-
nected.
3) Check if the connector J850 on the LGC board is disconnected.
4) Check if the connector pins are disconnected and the harnesses are
open circuited.
5) Check if the conductor patterns on the LCF board and LGC board are
short circuited or open circuited.
6) Replace the LCF feed sensor.
7) Replace the LCF board.
8) 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
!
NO
"
1) Check if the connector of the transport motor is not disconnected.
2) Check if the connector J854 on the board are not disconnected.
3) Check if there is any abnormality at the transport drive unit.
YES
Is the LCF feed clutch working?
(Perform the output check in the test mode: 03-272)
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l
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l
l
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l
!
NO
"
1) Check if the connector of the LCF feed clutch is disconnected.
2) Check if any of the connector J851 on the LCF board is discon-
nected.
3) Check if the connector CN346 on the LGC board is disconnected.
4) Check if the connector pins are disconnected and the harnesses are
open circuited.
5) Check if the conductor patterns on the LCF board and LGC board are
short circuited or open circuited.
6) Replace the LCF feed clutch.
7) Replace the LCF board.
8) Replace the LGC board.
YES
1) Check if there is any abnormality at the transport drive unit.
2) Check the LCF feed roller, separation roller and pickup roller.
Clean or replace them.
* Check if the paper weight is within the specified range.