Oki ES9160 Maintenance Manual page 358

[ 3 ] Separation
Items to check before adjustment
Poor paper separation from the drum can be also caused by matters other than defective adjustment of
the separation output. Check the following items before making an adjustment. If there is no problem,
adjust the output of the separation charger.
• Are the erasing needle and the power supply bracket dirty or dislocated?
• Is the mode selected properly according to the paper weight?
• Is the process unit installed properly? Is the developer magnetic brush in contact with the drum?
Is the process unit worked correctly? Is the toner density low?
• Is the copy paper fed straight? Is the copy paper abnormally moist?
• Is the rotation of the registration roller normal?
• Is the output of the main charger normal?
• Is the developer bias an appropriate value?
• Is the transfer output different from the set value?
• Is the separation finger in contact with the drum surface?
Note for adjustment
When poor paper separation occurs:
Increase the separation output value under the following conditions. Note that poor transfer occurs if
the separation output value is too high.
• Poor separation occurs even though the separation needle is not dirty.
• Thin paper has been frequently used.
When poor transfer occurs:
• Decrease the separation output value when poor transfer occurs. Remember that the separation
performance becomes low if the separation output value is decreased too much.
ES9160 MFP / ES9170 MFP
SETTING / ADJUSTMENT
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