Canon DU-82 Service Manual page 46

CHAPTER 4
Initial check execution
Power ON
Displays "READY"?
Yes
Can duplex printing
be executed ?
Yes
Execute a duplex printing
Occurs paper jam?
No
Delivers paper
normally?
Yes
Occurs image
defect?
(Note 1)
No
Displays "operator call"
or "service call"
No
END
Note : The image defect occurred at the user side might not re-occur on its test print.
In this case, make a print from external device and infer the defective part by the out-
put image. Then, find the defective part according to the item, "image defects".
4 - 2
No
Displays "operator call"
or "service call"
Yes
No
Refer to the item, "malfunction
status troubleshooting"
Yes
Refer to the item, "paper jams"
No
Refer to the item, "paper
transport troubleshooting"
Yes
Refer to the item, "image defects"
Yes
Refer to the item, "malfunction
status troubleshooting"
Figure 4-1-1
No
Refer to the item,
"malfunction troubleshooting"