6
6
6-4
6-4
Troubleshooting■>■Test■Print■>■How■to■use■the■test■print■>■16■gradations■(TYPE=4)
Troubleshooting■>■Test■Print■>■How■to■use■the■test■print■>■16■gradations■(TYPE=4)
How■to■use■the■test■print
■
■
16■gradations■(TYPE=4)
This■test■print■is■for■mainly■checking■the■gradation,■fogging,■white■line■and■uneven■density■at■front■&■rear.
Check■item
Check■method
Assumed■cause
Gradation
Check■that■16■density■gradation■is■properly■reproduced.
Failure■of■Drum■Unit
Failure■of■Laser■Scanner■Unit
Fogging
Check■that■fogging■occurs■on■white■image■area■only.
Failure■of■Drum■Unit
Failure■of■Laser■Scanner■Unit
White■line
Check■that■white■line■does■not■appear■on■entire■image.
Failure■of■Drum■Unit
Uneven■density■at■
front■&■rear
Check■that■uneven■density■does■not■appear■at■front■&■rear.
Failure■of■Drum■Unit
F-6-1
T-6-3
