Canon QY8-1360-000 Service Manual page 165

BJC-7100
3. Faulty pickup
<Measure>
Check print media and
ambient conditions.
Do they meet
specifications?
Yes
Turn ON power and
make test print.
Does error recur?
Yes
Following the
troubleshooting procedures
for each error.
Check, service, or replace
paper transport mechanism
(other than sheet feeder unit).
<Symptoms>
<Cause>
• Faulty sheet feeder unit
• Faulty paper edge guide, platen, feed roller, spur
unit, pinch roller and holder, paper output roller,
transmission roller parts
• Faulty paper feed motor
• Faulty paper output unit
• Faulty sensor lever
• Smally pieces of paper or other foreign objects in the
mechanism
No
Use print media and
ambient conditions that
satisfy printer specifications.
No
Check feed status.
OK?
Yes
Re-check operation
OK?
Yes
END
• Check for displacement, damage, or soiling of the gears and springs
of the paper edge guide, platen, feed roller, spur unit, pinch roller
and holder, page output roller, transfer roller, paper feed motor, paper
output guide.
5-33
• Paper not picked up, or multiple pages picked
up
• Paper skewed or not output
• Frequent paper jams
• Is print media picked
* Process for checking that
up OK?
• Does problem occur
with manually fed
print media?
No
Check sheet feeder unit.
No
OK?
Yes
Part 5: Maintenance
trouble is not accidental.
• Check for soiling
of pickup rollers,
and for
displacement of
separation hook
unit, hooks, etc.
No
Service or replace
faulty parts.