Toshiba E-STUDIO520, Service Manual, Page: 364 / 592

e-STUDIO520/600/720/850 TROUBLESHOOTING March 2005 © TOSHIBA TEC
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5.1.4 Transport jam (RADF)
[E711] Original not reaching the original length detection sensor
[E712] Original not reaching the registration sensor
[E714] Feed signal reception jam
Note: Note:
If any of the ADF board, original length detection sensor, read sensor, small original reverse
sensor and large original exit sensor has been replaced in an RADF-related troubleshooting,
perform “Automatic adjustment of RADF sensor and EEPROM initialization (05-356)” in the
Adjustment mode. If “EEPROM initialization (05-352)” had been performed, be sure to per-
form “RADF original guide width adjustment (05-367/368)” consecutively.
Are the pickup belt, feed roller and separation roller stained or worn out?
!
YES
"
Clean or replace the rollers or belt.
NO
Is the transport force of the pickup belt, feed roller and separation roller insufficient?
!
YES
"
Replace the rollers or belt.
NO
Is the original excessively curled or folded?
!
YES
Flatten and set it again.
Is the original empty sensor working? (Perform the input check: 03-[FAX]ON/[7]/[B])
l
l
l
l
l
l
l
l
l
!
NO
"
1) Check if the lever of original empty sensor is working normally.
2) Check if the connector of the original empty sensor is disconnected.
3) Check if the connector CN5 on the ADF board is disconnected.
4) Check if the connector pins are disconnected or the harnesses are
open circuited.
5) Check if the conductor pattern on the ADF board is short circuited or
open circuited.
6) Replace the original empty sensor.
7) Replace the ADF board.
YES
Replace the ADF board.
05/06