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BJC-5000
5.Cleaning Error
<Corrective Action>
Visual check of paper
feed system operation
Correct ?
Yes
Purge sensor
cable check
Correct ?
Yes
Purge unit check
Correct ?
Yes
Check/Repair
the paper feed
motor drive switching
mechanism
<Cause>
Cleaning or capping is not executed properly or not
detected.
<Suspected Parts>
During initialization, do the paper feed motor, feed roller,
eject roller, etc., rotate? Any abnormal noises?
Is the paper feed motor out of synchronization?
No
1. Repair/Replace a
faulty part(s).
2. Replace the logic
board.
Check to see if the purge sensor cable connectors
(which are located at both the purge sensor and
the logic board) are connected properly and check
the joint cable conductivity.
No
Re-connect/Replace
the purge sensor cable.
Remove the purge unit from the printer, and fully rotate
the drive gear by hand in both directions to check that
it moves smoothly.
Check the purge sensor.
Measuring
Pin No.
Sensor
points
Open
J1
2, 3
Close
While the power is on, remove the purge unit,
then check the measuring points by rotating
the drive gear manually to open and close the
sensor.
No
Replace
the purge unit.
Check to see if each gear or slide lock lever is deformed
or damaged and if any spring is dislocated.
See Part 4 "3.4.2 Paper Feed Motor Drive Switching
Section" on page 4-29.
5-19
Purge unit, purge sensor, purge sensor
cable, paper feed motor, paper feed
drive power transmission section, logic
board
Normal reading
Low level
High level
Part 5: Maintenance
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