Samsung MULTIXPRESS CLX-9251 Series Service Manual page 451

37) Blur occurs on Color printout
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Symptom : Blur occurs on the color printout.
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Troubleshooting
1) Enter EDC Mode → Service Functions → TR Control Mode.
2) Select [T2 Control Mode].
3) Select the paper setting based on the site. (Paper Group, Paper Side, Paper Direction)
4) Raise value for T2 PWM and see if blur problem is resolved.
5) When the problem persists after changing the [T2 Control Mode] values , change the [T1 Control Mode] values.
6) Decrease the value for each color and see whether the symptom disappears.
In this case, [-4] was applied and solved the blur.
7) As there can be variation for each device, change T1, T2 and observe the results.
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4. Troubleshooting
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