Canon LBP-1210 Service Manual page 167

CHAPTER 4
Notes: 1. Before executing a test print, make sure to select the pickup source and delivery
source that were used when the malfunction occurred according to the information
given by the user.
If the information is not available, make test prints with all feasible combination of
paper source and delivery source in the printer, and find out the factor.
2. The image defect occurred at the user side might not re-occur on its test print. In
this case, make a test print from the external device and infer the factor by the out-
put image. Then, find the factor according to the item, "image defects".
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