Toshiba e-STUDIO520 Service Handbook page 374

YES
Is the external LCF transport clutch working?
(Perform the output check in the test mode: 03-273)
l NO
l
l
l
l
l
l
l
l
l
l
l
l
YES
Leading edge of paper not reaching the fuser exit sensor.
l YES
l
l
l
l
l
NO
Is the intermediate transport sensor working?
(Perform the input check in the test mode: 03-[FAX]OFF/[1]/[A], OFF/[1]/[C], OFF/[2]/[C],
OFF/[3]/[C], OFF/[4]/[C])
l NO
l
l
YES
1) Check the conditions of the feed roller, separation roller and pickup roller of the drawer in
use, and replace them if necessary.
2) Check if there is any abnormality at the transport drive unit.
3) Check the condition of the external LCF feed roller and separation roller and clean or
replace them.
Check if the registration roller (rubber) is rotating smoothly.
e-STUDIO520/523/600/603/720/723/850/853
TROUBLESHOOTING
1) Check if the connector of the external LCF feed clutch is not discon-
nected.
2) Check if the connectors J851 on the LCF board are not discon-
nected.
3) Check if the connector CN346 on the LGC board is not disconnected.
4) Check if the connector pins are not disconnected and the harness is
not open circuited.
5) Check if the conductor pattern on the LCF and LGC boards is not
short circuited or open circuited.
6) Replace the external LCF feed clutch.
7) Replace the LCF board.
8) Replace the LGC board.
Is there any damage on the paper? (Remove the paper and check the
followings.)
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.
1) Are paper dusts accumulated on the intermediate transport sensor?
2) Check if the actuator of the sensor is working normally.
3) Check if the harness is not damaged.
4) Check if the connector is disconnected.
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