Missing Imaging Unit

When you get the error message "Replace imaging unit, 0 estimated pgs remain [84.3x]" This means the imaging unit has reached end of life and needs to be replaced. The device will not print, and this message will not be cleared, unless you replace it with part number 50F0Z00
(or 500z)
Vertical streaking. If the imaging unit is near end of life, or the device has had problems with non standard toner, vertical streaks may occur on the page. Replacing the imaging unit will resolve the problem.
Vertical streaks on page
Vertical band at top of page. This typically appears on printed images, but can also appear on text. The most likely cause is toner contamination on the charge roll, however if the band is still visible after printing 30-40 continuous pages this means the imaging unit needs to be replaced.
Vertical Banding on images
Seal failure on the imaging unit. Occasionally seal leaks have been seen from the Imaging Unit.
Toner will be seen on the main frame near the Imaging Unit sides.
If toner build up is excessive, it may even fall into the Tray below. Cleanup with a toner vacuum may be needed.
Replace the Imaging Unit to fix the problem.
Spots, scratches, marks on the page. If they are random, this indicates a problem with toner scatter.If they are repeating patterns, measure the distance between matching marks or spots. If the distance is one of 97mm, 47mm or 38mm, this indicates marks or dents on the imaging unit and it will need to be replaced.
You receive the message Replace defective imaging unit The imaging unit is defective and needs to be replaced. If you just installed it, it will be covered under warranty - contact Lexmark Australia on 1300 362 192
You receive the message Reinstall missing or unresponsive imaging unit and the below instructions don't resolve the problem. Try one or more of the following:

• Check if the imaging unit is missing. If missing, install the imaging unit.For information on installing the imaging unit, see the "Replacing supplies" section of your device's User's Guide
• If the imaging unit is installed, then remove the unresponsive imaging unit, and then reinstall it.

• Note: If the message appears after reinstalling the supply, then the imaging unit is defective. Replace the imaging unit.

You receive the message Replace unsupported imaging unit The imaging unit you attempted to install was either non-genuine, or was from a different region. Buy a genuine Lexmark imaging unit from an authorised Lexmark supplier in your country/region.
You receive a 31.6x error One of the following errors is shown on the display:
31.60 Imaging unit smart chip error
31.61 Imaging unit I2C packet timeout
31.62 Imaging unit I2C packet has been sent but code timed-out on receiving the data (callback)
31.63 Imaging unit security error in the send challenge sequence
31.64 Imaging unit ROM signature error
31.65 Imaging unit stuck busy (status register and/or CRI Arbiter register report busy)
31.66 Toner failed to replenish into the imaging unit
In this case you need to ensure that the imaging unit is properly installed. If yes, check if the imaging unit is supported. Replace with a supported imaging unit if necessary.
If the problem remains, you will need to organise a Lexmark service call (Australia 1300 362 192)
You receive error message 32.11 Imaging unit smart chip compatibility error This could be caused by an unsupported imaging unit (non-genuine or incorrect region). Replace with correct imaging unit to clear this error. If your imaging unit is supported, you will need to organise a Lexmark service call (Australia 1300 362 192).
You receive error message 84 Imaging unit low If expected, replace the imaging unit. If unexpected, call Lexmark Support (Australia 1300 362 192)
Replacing the imaging unit

Will tell you CMYK

cyan yellow magenta and black or the toner is low for the black

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

There is a list of different parts that can be causing this error.

The first one is if its not seated properly. You can take it out and put it back in to make sure it is seated. Having bought a new one means that this is the only simple solution to this problem.

Here are the different parts that may need to be replaced as per the service manual states:

the imaging unit sensor board
the CTG0 harness
the engine control board
imaging unit motor
the lift uplink
the motor driver board
the low voltage power supply

!! that't a lot of possibilities and there are a series of electrical and mechanical tests that must be performed. You will have to call for service. Unless its seated incorrectly.

u cant reset those , u have to change the counter chips .These are available in market

Nancy, Your imaging unit has a limited lifecycle. Documentation states that it can make 24,000 B&W pages and 6,000 color. The message is telling you that you are getting close to that limit. Eventually you printer will stop printing, and your messahe will state "Replace imaging unit". This can be done by you. It is very easy to do. The imaging unit is fairly expensive: around $150 or more depending on the merchant and shipping charges.
Drew

plug the machine for 20 sec ,and plug it back in than make sure the imaging unit is inserted in corect.if all fail,that mean s you have a bad or used imaging uint..

The Imaging unit needs to be replaced when the drum fills up with waste toner. That's what triggers the message.

I had the same problem. Check out page 3-308 of this document.
Take off the side cover and re-engage the gear. Should solve the problem.

ftp://ftp.qms.com/pub/cta/out_going/other/diagcd/mc3300sm.pdf

Hi, I had the same problem. The following Cause and solution may help you fix your machine.

All refereces to left and right are facing the front of the machine as if for normal use.
The cause is due to the connector on thtop left rear of the imaging unit. this connector is mated with a coresponding, retractable connector in the body of the machine. When you open the cover over the top of the imaging unit, this connector retracts back into the body of the machine and when you close the lid it should re-engage with the imaging unit, The problem is that it dosen;t reconnect. I have asumed that it is due wear in the connector operating mechanism. This solution was effective for my printer.

Switch Off!!!
remove the topcover (after removing the colour catridges )and. remove the left hand side panel. You will see a nylon gear mechanism. Sqeeze together the nylon clip inthe centre of the gear wheel, and pull the gear about halfway off. This should allow you to move the vertical geared bar up 1 notch. .Push the gear wheel back on and try the machine to see if it works ok. All covers will need to be closed and if it works ok , reassemle the machine. Job done -about 10 to 15 mins. It tookme alot longer to find it,so some feedback would be appreciated.

Paul

That really sounds like the imaging unit cleaner has an issue.
If you have one try the imaging unit, I really suspect that is your problem.
Black is Faded or Missing Step 1 Clean the Laser Windows and Remove Excess Toner From the Imaging Unit Step 2 Check or Replace the Imaging Unit Gear Retaining Pin Step 3 Replace the Imaging Unit (installation instructions)
See if this link works. Xerox is infameous for these not working.
http://office.support.xerox.com/SRVS/CGI-BIN/WEBCGI.cgi/,/?St=842,E=0000000000019251353,K=6024,Sxi=13,Case=obj(19377)