Okidata Oki C 5600
I recently bought a used OKI c5600. It prints fine except for some magenta spots that appear on some prints (the drum unit seems to have a leak near the gear) and color alignment which is off by quite a bit. At first the colors were fine and only black was off, but after fiddling around with the maintenance menu the alignment of all colors is slightly off. OKI support says the printer needs to go to maintenance but that would not be worth it given the price for used units. Does anybody have an idea what could case the problem and what might be a solution? As an additional piece of information: the belt needs to be replaced soon, but it still passes the reflection test for color alignment.

Experienced technical support provide their insights in answering this question :
After a bit more testing it seems that the color registration for yellow works fine. It’s well adjusted and no error is thrown when cyan and magenta are removed (after enabling the color registration errors and disabling the errors for missing toner and drums). Magenta does not produce an error but is not well aligned and cyan produces registration error 4 (coarse alignment of cyan) and registration sensor error 4 (fine alignment of cyan). Black is pretty much empty now, but the error had already occurred when the prints were still fine. Does anybody have some insights on what might cause this?

How to Identify and Fix Common printer Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced technical support :

Your printer can become misaligned if there is any paper stuck in the machine, print cartridges are clogged or dirty, improper installation of cartridges and using low quality cartridges. Additionally, a printer can become misaligned after the machine completes a large print job.
Open the file to be printed. Select [Print] from the [File] menu. Select [Office Color] in the [Color] panel. Select the settings created using the Color Correct Utility from [User Color].
If your printouts are slanted, try these solutions: Slide the edge guides against the edges of the paper. Select a higher print quality setting in your printer software. Align the print head.
Check the Margin settings under File>Page Setup to make sure that the right margin is OK. Also check the paragraph format to make sure that you do not have a negative right indent which could be causing the text to extend into an area that is unprintable by your printer.
Click Print Quality Tools, and then select Align or Align Printheads. If prompted by the software or printer control panel to scan the Alignment Page, follow the instructions on the page to complete the alignment.
A printer`s heads, nozzles, and other components can become dirty or clogged, which could show up as white lines running across your page. Your printer may have a head-cleaning feature available through your device software located on your computer or from the control panel on the printer itself.
Open the File menu and select Print. Select Color Management. In the Print section, select Document and choose Printer Manages Colors for Color Handling. Click Print.
CMYK Colour Mode

CMYK (Cyan, Magenta, Yellow, Key/Black) is the colour space for printed materials, so you should be using the CMYK colour profile for any design that will be physically printed.

Go to Printer Properties and click on Advanced tab. Click on Printing Defaults tab from the bottom. Click on Advanced tab and click on Other Print Options. Click on Print Text in Black and check the box beside Print Text in Black.
If you notice white or dark lines in your prints (also called banding), try these solutions before you reprint: Run a nozzle check to see if any of the print head nozzles are clogged. Then clean the print head, if necessary. Make sure the paper type setting matches the type of paper you loaded.
Alignment errors are the count of the number of frames received that do not end with an even number of octets and have a bad Cyclic Redundancy Check (CRC). This could indicate a cable problem or a faulty transmitter on the network equipment connected at the other end.
If you place the paper guide in the wrong position or do not align the edges of the paper before you load it, the printed images may be misaligned on every page.
The problem may be due to a simple issue like printer paper quality or ink/toner cartridge wear, or it could be a more serious problem that requires professional repair.
A common cause of faded, faint printouts from your inkjet printer is dried ink particles causing a blockage in your printer. The printheads on an ink cartridge can be become blocked if the printer is not used for a period of time, so it is recommended to print a few pages each month to maintain the print quality.
First, check your printer settings on the file or picture your trying to print. If your page is setup to print in “grayscale” it will only print in black and white. Change the setting to “default” so it will print in color. If your settings look good from the start, the cartridge may just need to be primed.
Here are the most common causes of a printer printing faded text or images: Low ink or toner levels. Toner sticking to the fuser roller or problems with the transfer roller. Low ink or toner density settings.
CMYK Printing Methods

CMYK printing is also called the colour separation or four-colour-process. The colours are individually applied, starting with black, and then the rest of the process colours are applied in the order- cyan, magenta and yellow.

Use CMYK for any project design that will be physically printed, not viewed on a screen. If you need to recreate your design with ink or paint, the CMYK color mode will give you more accurate results.
Both of these color modes mix colors to create different color possibilities. The main difference is what they are generally used for in design: RGB is the color mode best for digital designs and CMYK is best for printing.
If your printouts become grainy or blurry, you notice misalignment of vertical lines, or you see dark or light horizontal bands, you may need to align the print head. You can align the print head automatically from the control panel or your computer, or align it manually from the control panel.
Dots are typically caused by foreign material inside the machine (for example paper dust, glue from labels or envelopes, paper clips, staples) sticking to or damaging the surface of the drum. Toner builds up on or sticks to these areas on the drum and creates black dots on the printed pages.
Thus, what you see on the screen (even in Print Preview) could differ slightly from when the document is actually printed. Why? Because when the printed document is handed over to the printer driver, then the printer`s metrics are used instead of Word`s internal metrics.
Alignment Matters

Worn suspension components, impacts with potholes or curbs, and incorrect alignment settings can result in misalignment, excessive tire wear and possible handling issues.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

HP Color Laserjet 3800 problem when printing color
ANSWER : Do a cold reset

Read Full Q/A … :

Okidata Oki C 5600

My 2550n Color LaserJet does not want to print in color
ANSWER : That model had issues with the carousel solenoid sticking. That might explain why it works after you let it sit for 10 minutes. The solenoid gets hotter with use which causes the deteriorated foam on it to become sticky and hold down the release plate instead of letting it go. This allows the carousel to spin when it is supposed to stop for each color. The solenoid is located on the right side of the printer. If you open the lid, it is just behind the opening at the top right. You need to remove the top of the printer and scrape off the goo on top of the solenoid body. I put a piece of thin sticky backed felt to replace it. Other people use electrical tape.

Read Full Q/A … :

Okidata Oki C 5600

Color alignment is wrong
ANSWER : After a bit more testing it seems that the color registration for yellow works fine. It’s well adjusted and no error is thrown when cyan and magenta are removed (after enabling the color registration errors and disabling the errors for missing toner and drums). Magenta does not produce an error but is not well aligned and cyan produces registration error 4 (coarse alignment of cyan) and registration sensor error 4 (fine alignment of cyan). Black is pretty much empty now, but the error had already occurred when the prints were still fine. Does anybody have some insights on what might cause this?

Read Full Q/A … :

Okidata Oki C 5600

HP 4700 Color alignment
ANSWER : Thanks much, this method worked for me.

Read Full Q/A … :

Okidata Oki C 5600

Need help for Epson Stylus color 3000 print head?
ANSWER : I need help changing the print head in my Epson 3000 – I have 2 printers – one will not stay in alignment and the other black ink is plugged and I have soaked it and cannot get it to budge.

Read Full Q/A … :

Okidata Oki C 5600

Reset HP Color Laserjet 4700 transfer kit
ANSWER : How about the situation when resistor does not reset the transfer belt count and even new transfer belt out of the box is not doing it. Do you have any idea how to solve this problem? I did reset transfer belts and fusing units on several HL 4700 printers with no problem but also I came across few which were not possible to reset even with oryginal parts.

Read Full Q/A … :

Okidata Oki C 5600

HP LaserJet 500 Color MFP M575 Scanner Calibration
ANSWER : 0512 is service code for m575

Read Full Q/A … :

Okidata Oki C 5600

color is not printing true
ANSWER : I changed all toners and drum and it is still doing it.

Read Full Q/A … :

Okidata Oki C 5600