Canon Color Bubble Jet BJC-8200, Service Manual

Page: 62 / 105

<Cause>
Pick-up roller flag cannot be detected.
<Suspected parts>
ASF unit, logic board, purge unit.
<Measure>
Part 4: TROUBLESHOOTING BJC-8200
4-8
8. ASF Sensor
Error
Yes
No
OK?
Yes
No
Visually check pick-up
roller
Check pick-up roller
operation
• Is the pick-up roller's sensor flag broken or missing?
• Remove ASF unit from main unit and
rotate the drive gear by hand to see if
pick-up roller and other parts operate
smoothly.
• Position the pick-up roller sensor flag so that it does not
cut off the light beam to the sensor.
Turn on the power and
check if pick-up roller operates correctly.
Check pick-up roller
operation
No
Yes
OK?
Replace logic board
Replace pick-up roller
Replace ASF unit
Replace purge unit
Does it function
correctly