Toshiba E-STUDIO520, Service Manual, Page: 423 / 592

March 2005 © TOSHIBA TEC e-STUDIO520/600/720/850 TROUBLESHOOTING
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[CD10] Cleaning brush drive motor abnormality
(1) Check if the cleaning brush, recovery toner transport auger and recycle toner transport auger are
not locked (no extraneous material or toner clod in both the toner transport sections at the
cleaner unit and recycle toner unit).
(2) Is the cleaning brush drive motor (M13) disconnected?
(3) Check if the connector (CN337) on the LGC board and connector pins are not disconnected.
(4) Replace the cleaning brush drive motor and recycle toner transport motor (M8).
(5) Replace the LGC board.
[CD20] Used toner transport motor abnormality
(1) Check if the transport auger is not locked (there is no extraneous material or toner clod).
(2) Is the toner bag full detection sensor (S11) working normally?
(3) Is the used toner transport motor (M9) disconnected?
(4) Check if the connector (CN333) on the LGC board and connector pins are not disconnected.
(5) Replace the used toner transport motor.
(6) Replace the LGC board.
[CD30] Recycle toner transport motor abnormality
(1) Check if the recycle toner transport auger is not locked (no extraneous material or toner clod in
both the transport sections at the toner recycle unit).
(2) Is the Recycle toner transport motor (M8) disconnected?
(3) Check if the connector (CN337) on the LGC board and connector pins are not disconnected.
(4) Replace the recycle toner transport motor.
(5) Replace the LGC board.
[CD40] Toner bag full
(1) Check the toner bag.
•
Is the toner bag full?
(2) Check thetoner bag full detection sensor (S11).
•
Is the tone full detection sensor working properly?
• Is the connector not disconnected?
(3) Check the used toner transport motor.
•
Is the used toner transport motor driving?
• Does the pulley beside the motor become heavy when it is turned toward the direction of
arrow (counterclockwise)?
(4) Replace the LGC board.
(5) Release the status counter.
•
Turn the power ON while pressing both the [0] and [8] keys.
• Press the [START] key after inputting [476] with digital keys.
• Change the status counter "1", "2" or "3" to "0" and press the [SET] or [INTERRUPT] key
([CD4] released).
• Check if the copier becomes to a standby state normally when power is turned ON again.
• In case that the used toner transport motor does not drive or [CD4] is not released when
power is turned ON again, do the above procedure after manually turning the pulley beside
the motor toward the direction of arrow (counterclockwise) several times.