Ricoh Aficio 480W Dolphin-C2 Service Manual page 157

28 April 2005
SC401 D Transfer corona leak error
A transfer corona feedback
voltage of less than 0.25V was
detected for more than 200 ms.
SC411 D DC separation corona current leak
A dc separation feedback
voltage of less than 0.5V was
detected after more than 200 ms
while the PWM duty value was
more than 17%.
SC440 D Drum drive motor lock
The motor lock signal is on
longer than 5 s while the drum
drive motor is on.
SC503 B Cassette Tray 1 3 feed error
After the tray was closed, the lift
sensor in Tray 3 (**) did not
switch on within 20 s after the
tray lift motor switched on.
-or-
The lift sensor did not switch off
within 1 s four times after the
tray started to descend.
SC504 B Cassette Tray 4 feed error
After the tray was closed, the lift
sensor in Tray 4 (**) did not
switch on within 20 s after the
tray lift motor switched on.
-or-
The lift sensor did not switch off
within 1 s four times after the
tray started to descend.
SERVICE CALL CONDITIONS
• T&S power pack defective.
• Transfer corona cable defective.
• Poor transfer corona cable connection.
• Dirty T&S corona unit caused leak
• T&S power pack defective.
• Transfer corona cable defective.
• Paper separation current cable
defective.
• Poor paper separation current cable
connection.
• Drive mechanism overload.
• Motor defective.
• Lift motor connector loose,
disconnected, broken.
• Paper or other foreign object has
jammed the tray lift motor.
• Pickup solenoid connector is loose,
disconnected, damaged.
• An obstruction in the mechanical
operation of the pickup solenoid
• Replace the tray lift sensor.
• Lift motor connector loose,
disconnected, broken.
• Paper or other foreign object has
jammed the tray lift motor.
• Pickup solenoid connector is loose,
disconnected, damage.
• An obstruction in the mechanical
operation of the pickup solenoid
• Replace the tray lift sensor.
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