Canon imageCLASS D661 Reference Manual page 66

The copy images are partly missing or shaded when you make copies on thick paper.
MP PAPERTYPE or HIGH COPY MODE of COMMON SETTINGS of the Additional Functions may not be
set correctly.
• Select SPECIAL PAPER 1 in MP PAPERTYPE. (→ p. 7-2)
• Set HIGH COPY MODE to ON. (→ p. 7-2)
The copy images are missing when you make copies on envelopes.
MP PAPERTYPE of COMMON SETTINGS of the Additional Functions may not be set correctly.
• Select SPECIAL PAPER 2 in MP PAPERTYPE. (→ p. 7-2)
The copy images are missing when you make copies using the 2 on 1 function.
The documents may not be the letter size.
• Be sure to use 2 sheets of letter size documents when you make copies using the 2 on 1 function.
The copy images are missing when you make copies.
330 mm may be selected in MAX. SCAN LENGTH of COPY SETTINGS of the Additional Functions.
• Select 356 mm in MAX. SCAN LENGTH. (→ p. 7-3)
The edges of copies are dirty when you make copies using the multi-purpose tray.
MP TRAY PAPERSIZE of COMMON SETTINGS of the Additional Functions may not be set correctly.
• Set MP TRAY PAPERSIZE to ON and specify the size. (→ p. 7-2)
The copies are dirty only when you use thin paper or tracing paper.
Other mode except for TRACING PAPER in MP PAPERTYPE of COMMON SETTINGS of the Additional
Functions may be selected.
• Select TRACING PAPER. (→ p. 7-2)
There are shaded parts on the bottoms of copies.
You made copies of a letter size document on legal size paper.
• Select 330 mm in MAX. SCAN LENGTH of COPY SETTINGS of the Additional Functions. (→ p. 7-3)
A copy of large-size document cannot be made.
330 mm may be selected in MAX. SCAN LENGTH of COPY SETTINGS of the Additional Functions.
• Select 356 mm in MAX. SCAN LENGTH. (→ p. 7-3)
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