Canon imageCLASS MF5600 Series Service Manual - page 196
Chapter 5
5-2
5.2
Countermeasure
5.2.1
Image Faults
5.2.1.1
Partially Blank/Streaked
5.2.1.1.1
There are vertical black lines or a vertical white line in a solid black image.
0006-6861
The vertical black lines are likely to have been caused by the ribs of the heater holder. The vertical white line is likely
to have been caused by the thermal fuse (if it corresponds to the location of the fuse).
Select heavy paper mode.
5.2.2
Malfunction
5.2.2.1
Control Panel-Related
5.2.2.1.1
When manual paper size is set to envelope, the LCD in standby mode shows ENV.
regardless of envelope type.
0006-6864
The LCD in standby mode does not support envelop type indications.
Display the User data registration screen or output a User data list to check envelope type.
5.2.2.2
Malfunction/Faulty Detection
5.2.2.2.1
When paper size is set to A5, paper size error does not occur even if printing is made with
other-size paper.
0006-6866
The printer engine does not support A5 size.
Since image printed on a sheet is A5 size, paper size error does not occur.
Therefore, field remedy is not taken.