Toshiba 4560 Service Manual page 37

[In the case of the LCF and the pedestal]
By combining the operation of the tray motor and the condition of the tray-up switch and the empty
switch, the CPU detects whether or not there is paper.
• When the power is turned ON or when the LCF door is opened/closed (for the pedestal:
when the power is turned ON or when the cassette is removed) ~
The PFC (Paper Feed Controller) causes the LCF to initialize.
Detects whether or not there is paper
• Tray motor comes ON ~ The tray rises.
• A fixed time later, if the tray-up switch is not turned ON:
Removing/reinstalling the LCF or turning the machine OFF/ON clears this condition. (For the
pedestal, turn the power OFF/ON.)
• Within a fixed time, the tray-up switch is turned ON:
~ The tray motor stops.
At this time, if the empty switch is ON ~ It is determined there is paper.
At this time, if the empty switch is OFF~ It is determined there is no paper.
• During copying, sheets of paper are fed and when the paper supply becomes low
The tray-up switch goes OFF
The tray-up switch comes ON
• During copying, when the empty switch goes OFF despite the tray-up switch being ON
Nov. 1997 © TOSHIBA
At this time, both tray-up and LCF empty switches are OFF.
The tray is
not normal
The PFC turns ON the tray motor ~ The tray moves up.
The "ADD PAPER" is displayed regard-
less of paper being present or not.
The "ADD PAPER" is displayed.
The tray motor stops.
It is determined there is no paper.
"ADD PAPER" is displayed.
Copying stops.
4 - 7 4560/4570 OPERATION