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Chapter 5 Troubleshooting
(Technical Reference for B6200-B6300)
5.3 When Print Quality is Poor
When the print quality is poor, select the closest symptom from the following table to rectify the problem.

If the print quality does not improve after carrying out the appropriate action, contact our Printer Support Desk.

SymptomReason/Action
Printing is light. (faded, blurred).The paper is damp. Replace with paper from a new ream.

Refer to "3.2 Loading Paper" in Chapter 3.
The drum/toner cartridge is defective/damaged or there is no more toner inside the cartridge. Replace with a new drum/toner cartridge.

Refer to "6.1 Replacing the Drum/Toner Cartridge" in Chapter 6.
The Draft Mode feature is on. Uncheck the [Draft Mode] check box on the [Detailed Settings] tab of the printer driver.

Refer to On-line Help for the printer driver
Levers on both sides of the fuser unit are raised. Open cover B of this printer and push down the levers at both ends of the fuser unit.
Black spots or streaks are printed.The drum/toner cartridge is defective or damaged. Replace with a new drum/toner cartridge.

Refer to "6.1 Replacing the Drum/Toner Cartridge" in Chapter 6.
Dirt appears at equal intervals.The feed route of the paper is stained. Print a few pages to remove the stains.
The drum/toner cartridge is defective or damaged. Replace with a new drum/toner cartridge.

Refer to "6.1 Replacing the Drum/Toner Cartridge" in Chapter 6.
White dots appear in black filled areas.The paper used is not suitable. Load the correct type of paper. Refer to "Usable Paper" in this Chapter 3.
The drum/toner cartridge is defective or damaged. Replace with a new drum/toner cartridge.

Refer to "6.1 Replacing the Drum/Toner Cartridge" in Chapter 6.
Printed image smudges when
rubbed with your finger. The toner is not fixed on the paper. Paper is smeared with toner.
The paper loaded in the paper tray does not match the paper type set on the control panel. Set the appropriate paper type of the paper loaded in the paper tray on the control panel.

Refer to
The paper is damp. Replace with paper from a new ream.

Refer to "3.2 Loading Paper" in Chapter 3.
The paper used is not suitable. Load the correct type of paper.

Refer to "Usable Paper" in Chapter 3.
The whole piece of paper is
printed black.
The drum/toner cartridge is defective or damaged. Replace with a new drum/toner cartridge.

Refer to "6.1 Replacing the Drum/Toner Cartridge" in Chapter 6.
This may be due to breakdown of high voltage power. Contact our Printer Support Desk.
Nothing is printed.Multiple sheets of paper are fed simultaneously. Fan the paper well and reload.

Refer to "3.2 Loading Paper" in Chapter 3.
The drum/toner cartridge is defective/damaged or there is no more toner inside the cartridge. Replace with a new drum/toner cartridge.

Refer to "6.1 Replacing the Drum/Toner Cartridge" in Chapter 6.
Spots of missing text.This may be due to breakdown of high voltage power. Contact our Printer Support Desk.
The paper is damp. Replace with paper from a new ream.

Refer to "3.2 Loading Paper" in Chapter 3.
The paper used is not suitable. Load the correct type of paper.

Refer to "Usable Paper" in Chapter 3.
Text is blurred.The paper used is not suitable. Load the correct type of paper.

Refer to "Usable Paper" in Chapter 3.
The paper is damp. Replace with paper from a new ream.

Refer to "3.2 Loading Paper" in Chapter 3.
Missing characters throughout
the length of the paper.
The drum/toner cartridge is defective/damaged or there is no more toner inside the cartridge. Replace with a new drum/toner cartridge.

Refer to "6.1 Replacing the Drum/Toner Cartridge" in Chapter 6.
Text or images are printed at
an angle.
The paper tray guides are not set in the correct positions. Set the length guide and the right width guide in the correct positions.

Refer to Loading Paper in a Tray in Chapter 3.
Transparencies and envelopes
are not printed clearly.
The type of transparency or envelope loaded cannot be used in this printer. Load the correct type of paper.

Refer to "Usable Paper" in Chapter 3.
Check that the paper type on the printer driver or the control panel is correctly set.

Refer to "3.4 Setting Paper Types"in Chapter 3.
The Draft Mode feature is turned on and the resolution is set at a low level on the printer driver. Change the settings on the [Detailed Settings] or [Graphics] tab of the printer driver.

Oki Data has taken care to insure that the information is complete, accurate and up-to-date. However, Oki Data assumes no responsibility for errors or omissions which may occur. All the information provided is subject to change from time to time at the sole discretion of Oki Data.
Copyright 2014, Oki Data, Americas, Inc.