Toshiba 4580, Service Manual

Page: 162 / 379

Mar. 1999 © TOSHIBA TEC 9 - 35 6570/5570 PAPER FEED SYSTEM
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Abnormality detection
[A] Jam detection
(1) A paper misfeed in PFP is detected under the following conditions:
1
When the PFP paper-start switch (S28), (S32) or (S36) does not come ON within 1.6 seconds of
the shart of paper feeding.
2
When the leading edge of the paper does not pass the PFP paper-stop switch within a constant
time.
(2) To clear a jam, slide the LCF unit, remove all paper from the transport mechanism and then close the
front cover. If any of the PFP paper-stop switches (S27), (S31) or (S35) are ON when the door is
closed, it is assumed that there is still paper in the transport mechanism and the jam is not cleared.
(3) When a jam occurs in the PFP during multiple copying, paper fed prior to the jammed paper will be
copied normally.
[B] Service call
(1) If the PFP tray-up switch (S30), (S34) or (S38) does not come ON within two seconds of the tray’s
starting to rise at the following times: when the power is turned on, removing and inserting the cas-
sette or starting to copy; then that cassette can no longer be used and “Add paper” will appear on the
message display.
(2) In order to clear the above condition, the cassette must be removed and installed or the power must
be switched OFF and ON (It will not be cleared by opening closing the door.).