If the OKI MC332, MC362 or MC562 prints with white streaks, colored lines, repeating spots, blurred letters or output that is too faint, do not start by replacing all cartridges or reinstalling the driver. First print the MFP’s internal color pattern. It will show whether the cause is in the printing mechanism, paper and consumables, or whether the defect is caused by a computer application and its print settings.<\/p>\n
This guide identifies the problem by the shape of the defect, the affected color and the distance between repeating marks. The paper, tray settings, toner saving mode, LED heads, toner cartridges, image drum, transfer belt and fuser are checked in sequence. Do not disassemble the case or change hidden service settings.<\/p>\n
Where to start<\/strong><\/p>\n Print the Color Tuning Pattern<\/strong> from the MFP control panel. If streaks or spots are present on this pattern, the cause is not related to Windows, macOS, the USB cable or the application being used. If the internal pattern is clean but the defect appears only when printing from a computer, go to the section about the driver and print job settings.<\/p>\n<\/div>\n The location of the main components, cleaning procedure and settings system apply to the following color MFPs:<\/p>\n Some methods also apply to the MC351, MC361, MC561 and related C301, C310, C321, C330, C331, C510, C511, C530 and C531 printers. However, the appearance of covers, menus and consumables may differ. Check the exact model name before removing any unit.<\/p>\n Check whether black, cyan, magenta and yellow print evenly. Write down which color is affected, whether the streak runs along the entire length of the sheet, and whether identical spots repeat at regular intervals.<\/p>\n An incorrect Media Weight<\/strong> setting changes the paper transport speed and fuser operating mode. Therefore, heavy paper used with a plain-paper setting may print faintly, and the toner may not fuse properly to the surface.<\/p>\n If the defect disappears on new paper, do not clean the image drum or replace consumables. The cause was the paper or the mode selected for it.<\/p>\n If toner rubs off the paper<\/strong><\/p>\n First select the category that matches the actual paper weight. If the toner still rubs off, select a setting one level heavier and print again. Do not reduce Media Weight: with a setting that is too light, heavy paper passes through the fuser without the required toner-fusing mode.<\/p>\n<\/div>\n For paper heavier than 176 g\/m\u00b2, use the MP Tray \u2192 Face-Up Stacker<\/strong> path. Do not enable automatic duplex printing. If toner rubs off even standard 80 g\/m\u00b2 paper with Medium Light selected, the fuser is probably the cause.<\/p>\n Toner Save Mode<\/strong> intentionally reduces the amount of toner used. Because of this, photos, color fills and thin text may appear too light even when the consumables are working correctly.<\/p>\n Tab names differ between PCL, PS and XPS. Do not change the resolution, color profile, brightness and several other settings at the same time: afterward it will be difficult to determine which setting affected the result.<\/p>\n Dirty LED heads most often cause vertical white streaks, vertical fading and blurred letter edges. You do not need to remove the image drum or transfer belt for cleaning.<\/p>\n Do not damage the optical and printing surfaces<\/strong><\/p>\n Do not use alcohol, solvent, gasoline, glass cleaner, wet wipes, paper towels with coarse fibers or compressed air. Do not leave the exposed image drum under room lighting for more than five minutes and do not shine a bright lamp inside.<\/p>\n<\/div>\n If the streak disappears or becomes noticeably weaker, carefully wipe the same LED head again. If the position and width of the streak do not change, continue to checking the toner and image drum.<\/p>\n On the Color Tuning Pattern, compare the four components:<\/p>\n If the defect is present in only one color, first check the corresponding toner and image drum section. If the same defect appears in all colors, the paper, overall weight setting, transfer belt or fuser is more likely to be the cause.<\/p>\n Redistributing the remaining toner is a temporary test, not a way to restore the cartridge. Do not shake the cartridge sharply or turn it upside down: toner may spill inside the MFP. If the Toner Low message or defect returns, install a suitable new cartridge.<\/p>\n A dirty black protective film on the image drum unit can also cause a white streak. Wipe only the clearly visible black film with a dry, soft, lint-free cloth. Do not try to clean the green cylinders this way.<\/p>\n If a colored or black line remains in exactly the same position and the LED head and protective film are clean, the corresponding section of the image drum may be scratched or damaged. In this case, the image drum unit must be replaced.<\/p>\n If the same dot, spot or horizontal line appears several times in the direction of paper travel, place the page vertically and measure the distance from the center of one mark to the center of the next identical mark. Use two or three consecutive marks for the measurement, not random stains of different shapes.<\/p>\n A tolerance of several millimeters is possible because of measurement inaccuracy and paper deformation. If the distance differs noticeably from all three values, do not purchase a unit based only on an approximate match. First repeat the test on new paper and compare several pages.<\/p>\n The Drum Cleaning<\/strong> function causes the drum to rotate additionally before printing and may reduce horizontal white lines. It does not clean the drum with liquid and does not restore a damaged surface.<\/p>\n Drum Cleaning reduces image drum life<\/strong><\/p>\n Do not leave this function enabled permanently without a reason. It is suitable for checking horizontal white lines, but it does not fix a scratch, mechanical damage or an image drum that has reached the end of its life.<\/p>\n<\/div>\n If all colors print evenly but the overall output remains too light, or density changed after installing new toner or an image drum, perform automatic adjustment.<\/p>\n Do not manually change Cyan Highlight, Magenta Mid-Tone, Yellow Dark and other color settings at the same time. First evaluate the result of automatic adjustment. Manual color correction will not fix a dirty LED head, damaged drum or faulty fuser.<\/p>\n If cyan, magenta or yellow edges are visible next to black letters, this is a color registration problem rather than ordinary loss of sharpness.<\/p>\n If automatic registration does not help, clean the LED heads again and check that the combined image drum is installed correctly and the transfer belt lies horizontally. Do not randomly change Cyan Reg Fine Adj, Magenta Reg Fine Adj and Yellow Reg Fine Adj. Persistent misalignment of one color after correct reassembly may be caused by damage to the drum, drive or belt.<\/p>\n If toner rubs off plain paper after the settings are correct and the same defect is present on the internal pattern, the fuser may not be producing the required temperature or pressure. Do not disassemble it or try to clean the heating rollers with liquid.<\/p>\n The fuser may be very hot<\/strong><\/p>\n Before checking it, turn off the MFP and wait at least ten minutes. Hold only the designated handle and locking levers. Do not touch the heating area and do not cool the unit with water.<\/p>\n<\/div>\n A clean Color Tuning Pattern confirms that the MFP can apply all four colors correctly. In this case, do not remove the image drum or replace the fuser.<\/p>\n Compare color registration and the overall color tone separately. If the lines are aligned but a photo looks different from the monitor, this relates to color profiles, color matching mode and application settings. Cleaning the LED heads will not correct that difference.<\/p>\n Stop troubleshooting yourself and contact service support or replace the confirmed consumable unit if at least one of the following conditions applies:<\/p>\n Before purchasing a replacement part, keep the internal color pattern, write down the affected color, the distance between repeating marks, the paper type and the selected Media Weight. This information helps distinguish a faulty image drum from a fuser problem and avoids replacing working cartridges.<\/p>\n","protected":false},"excerpt":{"rendered":" If the OKI MC332, MC362 or MC562 prints with white streaks, colored lines, repeating spots, blurred letters or output that is too faint, do not start by replacing all cartridges or reinstalling the driver. First print the MFP’s internal color…<\/p>\nModels This Guide Applies To<\/h2>\n
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Step 1. Print the Internal Color Pattern<\/h2>\n
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How to Evaluate the Result<\/h3>\n
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What Type of Defect Appears on the Page<\/h2>\n
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\n \nType of Defect<\/th>\n Most Likely Causes<\/th>\n What to Check First<\/th>\n<\/tr>\n<\/thead>\n \n Vertical white streak<\/strong><\/td>\n Dirty LED head, toner running low, dirty protective film on the image drum or a damaged drum<\/td>\n Clean the LED heads, identify the affected color, check for a Toner Low message<\/td>\n<\/tr>\n \n Image fades vertically<\/strong><\/td>\n Dust on the LED head, low toner, unsuitable paper<\/td>\n Clean the LED heads, check the toner and paper<\/td>\n<\/tr>\n \n The entire page is too light<\/strong><\/td>\n Toner Save Mode is enabled, incorrect paper weight setting, damp paper, cartridge installed incorrectly or toner running low<\/td>\n Disable toner saving, check Media Type and Media Weight, use new paper<\/td>\n<\/tr>\n \n Vertical colored or black line<\/strong><\/td>\n Damage to the corresponding section of the image drum, contamination or a foreign particle<\/td>\n Identify the color using the internal pattern and inspect the image drum without touching the green surface<\/td>\n<\/tr>\n \n Identical spots or horizontal lines repeat<\/strong><\/td>\n Image drum, fuser or a foreign particle in the drum unit<\/td>\n Measure the distance between the centers of identical marks<\/td>\n<\/tr>\n \n White spots in solid areas<\/strong><\/td>\n Paper that is too damp, too dry, too thick or unsuitable; low toner<\/td>\n Use fresh office paper and specify its weight correctly<\/td>\n<\/tr>\n \n Edges of letters are blurred<\/strong><\/td>\n Dirty LED head or color registration is misaligned<\/td>\n Clean the LED heads; check whether colored outlines are visible around black text<\/td>\n<\/tr>\n \n Toner rubs off with a finger<\/strong><\/td>\n Incorrect paper weight setting, unsuitable media or faulty fuser<\/td>\n Set the actual Media Weight; if necessary, select a setting one level heavier<\/td>\n<\/tr>\n \n Colored outlines are shifted relative to black<\/strong><\/td>\n Color registration has not been performed, LED heads are dirty, or the belt or drum is installed unevenly<\/td>\n Run Adjust Registration and check the installation of internal units<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Step 2. Check the Paper and Tray Settings<\/h2>\n
Perform a Test Print on Plain Paper<\/h3>\n
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Specify the Paper Type and Weight on the MFP Control Panel<\/h3>\n
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\n \nMedia Weight<\/th>\n Paper Weight<\/th>\n Where to Use<\/th>\n<\/tr>\n<\/thead>\n \n Light<\/strong><\/td>\n 64\u201374 g\/m\u00b2<\/td>\n Trays and MP Tray<\/td>\n<\/tr>\n \n Medium Light<\/strong><\/td>\n 75\u201382 g\/m\u00b2<\/td>\n Standard 80 g\/m\u00b2 paper<\/td>\n<\/tr>\n \n Medium<\/strong><\/td>\n 83\u2013104 g\/m\u00b2<\/td>\n Heavier office paper<\/td>\n<\/tr>\n \n Heavy<\/strong><\/td>\n 105\u2013120 g\/m\u00b2<\/td>\n Heavy paper<\/td>\n<\/tr>\n \n Ultra Heavy 1<\/strong><\/td>\n 121\u2013176 g\/m\u00b2<\/td>\n Trays or MP Tray; duplex only within the supported range<\/td>\n<\/tr>\n \n Ultra Heavy 2<\/strong><\/td>\n 177\u2013220 g\/m\u00b2<\/td>\n MP Tray only, with output through the open rear Face-Up Stacker<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Step 3. Disable Toner Save Mode<\/h2>\n
On the MFP Control Panel<\/h3>\n
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aaaaaa<\/code>.<\/li>\nIn the Printer Driver<\/h3>\n
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Step 4. Safely Clean the LED Heads<\/h2>\n
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Step 5. Identify the Problem Color<\/h2>\n
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Check the Toner Cartridge<\/h3>\n
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Check the Protective Film and Image Drum<\/h3>\n
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Step 6. Measure the Distance Between Repeating Spots<\/h2>\n
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\n \nInterval<\/th>\n Likely Source<\/th>\n Action<\/th>\n<\/tr>\n<\/thead>\n \n About 30 mm<\/strong><\/td>\n Foreign particle in the image drum unit<\/td>\n Open and close the top cover, print again; for horizontal white lines, check Drum Cleaning<\/td>\n<\/tr>\n \n About 86 mm<\/strong><\/td>\n Fuser damage<\/td>\n Check the defect on several internal patterns; replace the fuser if confirmed<\/td>\n<\/tr>\n \n About 94 mm<\/strong><\/td>\n Contamination or damage to the green image drum cylinder<\/td>\n Do not wipe the cylinder yourself; replace the image drum if the defect repeats consistently<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Drum Cleaning for Horizontal White Lines<\/h3>\n
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Step 7. Perform Automatic Density Adjustment<\/h2>\n
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Step 8. Correct Misaligned Color Outlines<\/h2>\n
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If Toner Rubs Off or Gloss Is Uneven<\/h2>\n
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If the Internal Pattern Is Clean but Documents Print Poorly<\/h2>\n
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Methods You Should Not Use<\/h2>\n
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When a Unit Must Be Replaced or Service Is Required<\/h2>\n
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