Ricoh MT-C1 Service Manual page 439

15 February 2006
504 B Tray 4 lift malfunction
• The lift sensor is not activated
within 10 seconds after the tray
lift motor starts lifting the bottom
plate.
• When the tray lowers, the tray lift
sensor does not go off within 1.5
sec.
• Tray overload detected when the
tray is set.
507 B LCT feed motor malfunction
One of the following conditions is
detected:
• The LD signal from the feed
motor is detected abnormal for
50 ms after the motor switches
on.
• At power on, the motor is
detected loose or disconnected.
510 B LCT tray malfunction
One of the following conditions is
detected:
• When the bottom plate is lifted,
the upper limit sensor does not
come on for 18 s.
• When the bottom plate is
lowered, the lower limit sensor
does not come on for 18 s.
• After lift begins, the upper limit
sensor does not switch on before
the pick-up solenoid switches on.
• The paper end sensor switches
on during lift and the upper limit
sensor does not switch on for 2.5
s, and a message prompts user
to reset paper.
B140/B246 SERIES SERVICE MODE
• Tray lift motor defective or disconnected
• Paper or other obstacle trapped between
tray and motor
• Pick-up solenoid disconnected or
blocked by an obstacle
• Too much paper loaded in tray
Note (B246)
• At first, the machine displays a message
asking the operator to reset the tray.
• This SC will not display until the operator
has pulled the tray out and pushed it in 3
times.
• If the operator cycles the machine off/on
before the 3rd opening and closing of the
tray, the 3-count is reset.
• Feed motor defective
• Feed motor connector disconnected
• Obstacle interfering with mechanical
movement of motor.
• Tray lift motor defective or connector
disconnected
• Lift sensor defective or disconnected
• Pick-up solenoid defective or
disconnected
• Paper end sensor defective
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