Canon imageRUNNER ADVANCE 4551i Service Manual page 536

04-1586 -
A. Operation / B. Cause /
C. Remedy
04-1587 -
A. Operation / B. Cause /
C. Remedy
04-1937 -
A. Operation / B. Cause /
C. Remedy
04-1942 -
A. Operation / B. Cause /
C. Remedy
Deck interlock alarm
Cause:
Side Paper Deck interlock error
Detection condition/timing: The interlock was not detected with the Receptacle Open/Close Sensor
ON.
Movement/symptom:
While failure has occurred (an alarm has occurred), the target paper source cannot be used
because it is in no paper state.
Measures:
- Check if the receptacle is halfway closed.
- Remove the Deck Right Cover, and check for any improper connection, caught harness and
disconnection of the Interlock Switch (SW1) and the Receptacle Open/Close Sensor (PS8).
- Execute service mode: COPIER>FUNCTION>CLEAR>DK-RCV, and check if the machine is
recovered.
- If the machine is not recovered, close the receptacle, and check the operation of the Interlock
Switch (SW1) and the Receptacle Open/Close Sensor (PS8).
- Replace the Interlock Switch (SW1) and the Receptacle Open/Close Sensor (PS8).
Pickup Motor disengagement alarm
Cause:
Side Paper Deck Pickup Motor disengagement error
Detection condition/timing: The HP Sensor did not respond when disengaging the Feed/Separation
Roller.
Movement/symptom:
While failure has occurred (an alarm has occurred), the target paper source cannot be used
because it is in no paper state.
Measures:
- Remove the Top Cover.
- Execute service mode: COPIER>FUNCTION>CLEAR>DK-RCV.
- Press the Receptacle Open/Close Button, and check if the Feed/Separation Roller is disengaged.
1) If it is not disengaged:
- Replace the Pickup Motor (M1).
- Replace the Pickup Unit.
2) If it is disengaged:
- Check for any improper connection and caught harness of the Separation Roller Disengagement
Sensor (PS7).
Lifter error detection alarm
Cause: Error in the Lifter paper height detection
Detection condition/timing: When paper height was not detected within the specified period of time
while lifting up the lifter
Movement/symptom: While failure has occurred (an alarm has occurred), the target paper source
cannot be used because it is in no paper state.
Measures:
- Check the connector of the Pickup Unit.
- Check the paper surface detection of the Pickup Unit.
- Check the Pickup Roller of the Pickup Unit.
- Check the motor, gear and timing belt for driving the lifter in the receptacle.
Upper limit detection alarm
Cause: Upper limit of the lifter was detected.
Detection condition/timing: When detecting the upper limit three times
Movement/symptom: While failure has occurred (an alarm has occurred), the target paper source
cannot be used because it is in no paper state.
Measures:
- Check for any foreign matter in the receptacle.
- Check the connector of the Pickup Unit.
- Check the Upper Limit Sensor of the Pickup Unit.
- Check the Pickup Roller of the Pickup Unit.
523
7. Error/Jam/Alarm