Controlling The Deck Lifter Motor (M101) - Canon 1130 Service Manual

2. Controlling the Deck Lifter Motor (M101)

The deck lifter motor control circuit is found on the side deck driver PCB. (See Figure 8-112
for its block diagram.)
The combination circuit found in the diagram consists of various logic circuits, and the deck
lifter motor is rotated forward and in reverse according to combinations of the states of the deck
lifter motor drive signal (DLMON*) and the deck lifter up signal (DLFUP*) from the copier's DC-
CPU and the output signals from sensors.
If the deck lifter position sensor (PS104) does not turn on within about 60 sec after the deck lifter up
signal has been generated for some reason, the copier will indicate 'E041' on its control panel.
[1] Conditions for the Lifter to Move Up
• The deck is connected to the copier. -> The deck set signal (DMNTSD) goes '1'.
• The (compartment) is closed. -> The deck open detection signal (DOPND*) goes '1'.
• The deck (compartment) is closed. -> The deck open detecting switch is ON.
• The deck lifter upper limit detection signal (DLFUL) goes '0'and, in addition, the deck lifer
position detecting signal (DLFPD) goes '0'.
• The deck lifter motor drive signal (DLMON*) goes '0'.
• The deck lifter up signal (DLFUP*) goes '0'.
The above conditions cause the lifter to move up.
[2] Condition for the Lifter to Move Down
• The deck (compartment) is open. -> The deck open detection signal (DOPND*) goes '0'.
• The deck lifter lower limit detecting signal (DLFLD) goes '0' and, in addition, the deck lifter
position detection signal (DLFPD) goes '0'.
• The deck lifter motor drive signal (DLMON*) goes '0'.
• The deck lifter up signal (DFLFUP*) goes '1'.
The above conditions cause the lifter to move down.
COPYRIGHT © 2002 CANON INC. CANON CLC1100/1130/1150/1160/1180 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
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