Canon Color Bubble Jet BJC-5000 Series, Service Manual

Page: 144 / 161

Part 5: Maintenance
BJC-5000
5-26
Yes
No
Yes
No
Check the pick-up
roller sensor flag
Correct ?
Check the pick-up
roller sensor.
Check the paper
end sensor flag.
Replace the
pick-up roller.
Replace the
logic board.
Correct ?
Measuring
points
Normal reading
PS2 3 and 4
Sensor
Open
Close Low level
High level (Initial position)
Measuring
points
Normal reading
PS1 3 and 4
Sensor
Open
Close Low level (with paper)
High level (no paper)
Yes
No
Replace the paper
end sensor flag or
repair/replace a
faulty part(s).
Correct ?
Check the
paper sensor.
Yes
No
Replace the
logic board.
Correct ?
END
Previous
Page
Pin No.
Pin No.
Pick-Up Roller
Sensor Flag
Paper
Pick-Up Roller
Paper End Sensor
Sensor Flag
Pick-Up Roller Sensor
PS2
NO.3
NO.4
PS1
NO.3
NO.4
Check for pick-up
roller sensor flag
deformation or
damage.
Remove the logic board, then turn on the
power to check the rear of the sensor.
Does it move smoothly when
you move it with your hands?
Is it deformed or damaged?
Remove the logic board, then turn on the
power to check the rear of the sensor.