Imaging Unit Missing Error

1, I have samsung C430W printer..I replace the transfer imaging unit but still it showing to replace it..how can I reset the page count of transfer imaging unit...please help...

2, Turn Off the Samsung C430W printer using its Power button or disconnect the power cord from the back of the device and also from the wall outlet. Else, turn Off the switch present near the socket. Wait for about a minute. Replug the cord between the printer and the outlet. Power On the device and verify if the problem is solved.

3, To reset the page count, Click the Reset Fuser Life button and then choose the OK button, this resets the fuser. If the error is not rectified, the imaging unit has to be reinstalled or replace it with a new one again.
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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

rror codes If the printer's front panel displays a message Error XX, find the error code in this table and follow the instructions for resolving the problem. If problems persist, check the Xerox web site www2.tek.com/TekSMART/ or contact service.
Error User Corrective Action Error 01

• Remove and re-install the black Toner Cartridge, then turn the printer off and on.
• Replace the black Toner Cartridge, then turn the printer off and on.

Error 02

• Remove and re-install the cyan Toner Cartridge, then turn the printer off and on.
• Replace the cyan Toner Cartridge, then turn the printer off and on.

Error 03

• Remove and re-install the magenta Toner Cartridge, then turn the printer off and on.
• Replace the magenta Toner Cartridge, then turn the printer off and on.

Error 04

• Remove and re-install the yellow Toner Cartridge, then turn the printer off and on.
• Replace the yellow Toner Cartridge, then turn the printer off and on.

Error 05, 10, 11,12, and 13

• Turn the printer power off, then on.

Error 20

• Remove and re-install the Imaging Unit (make sure that Imaging Unit is locked in place). Turn the printer off, then on.
• Remove and re-install the Main Charge Grid. Turn the printer off, then on.
• Remove and re-install the Transfer Kit. Turn the printer off, then on.
• Remove and re-install each of the Toner Cartridges. Turn the printer off, then on.
• Replace the Main Charge Grid. Turn the printer off, then on.
• Replace the Imaging Unit (make sure that Imaging Unit is locked in place). Turn the printer off, then on.
• Replace the Transfer Kit. Turn the printer off, then on.
• Replace the Toner Cartridges. Turn the printer off, then on.

Error 21, 22, 30,and 32

• Remove and re-install the Imaging Unit (make sure that Imaging Unit is locked in place). Turn the printer off, then on.
• Replace the Imaging Unit (make sure that Imaging Unit is locked in place). Turn the printer off, then on.
• If a problem persists for Error 30, clean the sensor. See Cleaning Phaser 750 Printers.

Error 33

• Check for jammed paper throughout the paper path (especially in paper feeder).
• Remove and re-install the paper feeder and Transfer Kit. Turn the printer off, then on.

Error 40, 41, 42,and 43

• Check for jammed paper in the Fuser. Re-install the Fuser. Turn the printer off, then on.
• Make sure that you have the correct Fuser for your local printer power supply:
  110-Volt Fuser Part Number 016-1839-00
  220-Volt Fuser Part Number 016-1840-00
• Replace the Fuser. Turn the printer off, then on.

Error 50, 51

• Turn the printer off, then on.

Error 52

• Remove the Duplex Unit (if installed).
• Check for paper under the Upper Tray.
• Turn power off, then on.

Error 53

• Open left door and remove any jammed media.
• Tun the printer off, then on.

Error 60

• Remove the media from the Multi-Purpose Tray. Turn the printer off, then on.
• Reinstall the media. Make sure you do not overfill the tray.

Error 61

• Remove and re-install each Toner Cartridge. Turn the printer off, then on.
• Replace each Toner Cartridge. Turn the printer off, then on.

Error 62

• Check for jammed paper throughout the paper path (especially in the paper feeder and Fuser).
• Remove and re-install the Fuser. Turn the printer off, then on.
• Slide out and re-insert the paper feeder. Turn the printer off, then on.
• Replace the Fuser. Turn the printer off, then on.

Error 63

• Remove and re-install the Imaging Unit. Turn the printer off, then on.
• Replace the Imaging Unit. Turn the printer off, then on.

Error 70, 71, and72

• Turn the printer off, then on.

Error 73

• Remove and re-install the Imaging Unit. Turn the printer off, then on.
• Replace the Imaging Unit. Turn the printer off, then on.

Error 74

• Remove and re-install the Fuser. Turn the printer off, then on.
• Replace the Fuser. Turn the printer off, then on.

Error 80, 81, 82,83, and 84

• Make sure that all four toner cartridges are installed in the printer.
• Turn the printer off, then on.

Error 01p through
Error 47p

• Make sure that installed memory DIMM(s) are compatible with printer's image processor board and that they are installed in the proper slot(s).
• you can helpful

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The fuser is the heating unit near the paper exit, and that error means the lamp is burned out, the overtemp sensor is out, or the thermistor in the fuser is bad. About all you can do is replace the fuser. www.precisionroller.com will have a new fuser for you.

TRY FIRMWARE

have you replaced all of the consumables?
drums X2 black and color
developer units X4 CMYK
transfer imaging belt X1
Fuser unit X1
if the unit has over 60k prints it will need to have these items replaced and once that is done the color registration will come back inline.

1. Contaminated or damaged Imaging unit contacts. - Remove and clean the contacts and inspect for damage.
TROUBLESHOOTING TIPS AND HINTS:
Imaging Unit Failure message occurs because the printer cannot detect imaging unit motion, up-and-down. The Transfer Belt drives this motion, and the Drum Contact Assembly detects it. 1. Swap the Imaging Unit Cotact blocks between two imaging unit positions. If the problem follows the Contact block, it should be replaced. 2. Open the Top Cover and defete the top cover interlock switch. The color imaging units should raise in succession, cyan, magenta, then yellow, and then all lower at once. If one or more imaging units do not raise smoothly or drop prematurely then replace the Transfer Belt assembly.

Most likley the problem is a faulty Imaging unit. The chip on the unit has failed. You can try reseating the Imaging Unit and if that doesn't work replace it.

Here are the other listed causes.

Cause:
Corrupted NVRAM Possible Causes are Imaging Unit, Fuser, EEprom Board or PE/MCU Board