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■ Grid (TYPE=6)
This test print is mainly used to check color displacement, right angle accuracy, and linearity.
Check item
Color displacement
Right angle accuracy and
linearity
■ MCYBk Horizontal Stripes (TYPE = 10)
This test print is mainly used to check the dark area density of each color, the balance between colors, and white lines that occur
during development.
Check item
Uneven density
Check that there is no uneven density in the solid area of
each color.
Black line (colored line)
Check that there is no black line (colored line) in the solid
area of each color.
White line
Check that there is no white line in the solid area of each
color.
Checking Method
Check that there is no displacement between the lines
of the respective colors.
Check that there is nothing wrong with the right angle
accuracy and linearity between the lines of the respec-
tive colors.
2.5+1.5/-1.5mm
4.0+1.5/-1.0mm
Checking Method
Laser Scanner Unit error
ITB Unit error
Soiling on the Registration Sensor
Secondary Transfer Roller error
Main Drive Unit (drum rotation) error
Laser Scanner Unit error
Registration Roller error
Secondary Transfer Outer Roller error
Laser Scanner Unit error
Error in supplying toner to the Drum Unit
Primary Transfer Roller error
Damage to the Drum Unit
Soiling on the Primary Charging Roller
ITB Unit error
Secondary Transfer Outer Roller error
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7. Troubleshooting
Assumed cause
Assumed cause
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Table of Contents
Troubleshooting
