My lexmark is displaying 936.03 service transport error. How do I correct the problem?

i have a problem Lexmark E342n 936 service transport motor
can you help me?

Please try to download and install the correct drivers from support.lexmark.com website, make sure you filter the correct operating system.

If the error light does not go off, please press the continue button to display the secondary error codes.

For further assistance, please contact Lexmark Technical Support

This error normally requires a service call. However, certain rare occurrences, such as a a power fluctuation or a stray static discharge in the vicinity of the printer, can cause a false 122.03 error message to appear. In these cases, the error is only temporary and can be easily resolved without service. Follow the steps in the table to test this.
Step Action 1
Power the printer off, wait ten seconds, and then power the printer back on.
Did the error message return?
Yes: Continue to step 2.
No: Print a test page. If the page prints, the printer is functioning correctly. 2
If possible, connect the printer's power cord directly into a grounded wall outlet. In rare instances, a surge protector or uninterruptible power supply (UPS) can generate false error messages.
Did the error message return?
Yes: Continue to Contacting Lexmark below.
No: Print a test page. If the page prints, the printer is functioning correctly.
Contacting Lexmark
Please contact Lexmark Technical Support for additional assistance.

1. Open the top front cover of the printer. If the display DOES NOT read Close cover or Insert cartridge, the 32 error is not caused by the toner cartridge and printer service will be required to fix the problem.

2. Make sure the correct toner cartridge is installed for this printer model.
1. Check Lexmark for a list of compatible cartridges for your printer.
2. If the wrong toner cartridge is installed, remove it and install the correct one.

3. If the correct toner cartridge is installed, it may not be seated correctly. To ensure that this is not the cause of the error, do the following:
1. Turn off the printer.
2. Reseat the toner cartridge.
3. Close the lid.
4. Power the printer back on and check the display.

4. If reseating the toner cartridge does not clear the error message and the error started as soon as you installed this particular toner cartridge, the cartridge may be broken. You can check this as follows:
1. Power off the printer and then reinstall the old cartridge. (You can also try a different new cartridge to see if that clears the error.)
2. If the error does disappear, the problem may lie with this cartridge. Please contact the point of purchase, especially if the cartridge is brand new out of the box.

5. If the error cannot be cleared by putting in a new toner cartridge or one that is known to be working, the printer may require service to fix the problem.

This error message appears on the printer screen when the printer thinks the wrong toner cartridge is installed. To clear it or identify a service requirement, follow the steps below. NOTE: If you succeed in resolving the problem at any stage during the procedure, you not need to perform the remaining steps.

1. Open the top front cover of the printer. If the display DOES NOT read Close cover or Insert cartridge, the 32 error is not caused by the toner cartridge and printer service will be required to fix the problem.
   
   
2. Make sure the correct toner cartridge is installed for this printer model.
   1. Check Lexmark for a list of compatible cartridges for your printer.
   2. If the wrong toner cartridge is installed, remove it and install the correct one.
      
3. If the correct toner cartridge is installed, it may not be seated correctly. To ensure that this is not the cause of the error, do the following:
   1. Turn off the printer.
   2. Reseat the toner cartridge.
   3. Close the lid.
   4. Power the printer back on and check the display.
      
4. If reseating the toner cartridge does not clear the error message and the error started as soon as you installed this particular toner cartridge, the cartridge may be broken. You can check this as follows:
   1. Power off the printer and then reinstall the old cartridge. (You can also try a different new cartridge to see if that clears the error.)
   2. If the error does disappear, the problem may lie with this cartridge. Please contact the point of purchase, especially if the cartridge is brand new out of the box.
      
5. If the error cannot be cleared by putting in a new toner cartridge or one that is known to be working, the printer may require service to fix the problem.

The error could be caused by an unseated encoder strip or by a faulty cartridge. Please refer to this article on Error 0502 on the Lexmark X6150/X6170 Printer LCD Display. Hope this helps. Thanks.

Here's an article on 936 and 937 Service Main Drive Motor Errors in the Lexmark website. Just click on this link: http://bit.ly/dtbJKt. If all else fails, the printer may require service. I suggest you contact Lexmark technical support or your local service provider for further assistance. thanks.

i advice to coordinate this with lexmark service, they can test and replace this transport motor.

Here you go, courtsey of Lexmark's Knowlwdgebase.

Don

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994 Service Engine Error on a Lexmark C510 ID: ENUS21233 If your printer is unable to move the photodeveloper belt to the correct position during printing, a 994 error will occur. However, it may simply be the case that the photodeveloper is either contaminated with excess toner or improperly installed. To test for and resolve this issue, please do the following:

1. Power the printer off and remove the photodeveloper cartridge.
   
2. Rotate the green metallic photodeveloper belt by manually turning the white drive gear on the bottom of the cartridge until the black positioning markers are visible.
   
3. If necessary, carefully wipe any excess toner powder from the positioning markers using a soft, lint-free cloth or tissue.
   
4. While the top cover of the printer is still open, inspect the sensor that is used to locate the positioning markers on the belt. CAUTION! The photodeveloper is very sensitive to light. Cover the green metallic surface of the photodeveloper with a piece of paper while it is outside the printer.
   
   • Refer to this image, this image, and this image to identify the location of the sensor.
   • Verify that the sensor has not come loose from its housing and that it is not contaminated with excess toner powder. If necessary, clean the sensor with a soft, lint-free cloth or tissue.
     
5. Re-install the photodeveloper cartridge and power the printer back on.
   
6. If the error remains, it is likely that a service call will be necessary to resolve this issue. Please contact Lexmark Technical Support, having first obtained the serial number of your printer. NOTE: If practicable, attempt to order another photodeveloper and replace it first to avoid the inconvenience of a potentially unnecessary service call.

921 Fuser Error Indicates that the fuser is below standby temperature when the printer is idle.
Error codes 920, 921, and 922 may display for a cold fuser failure. A 920 error caused by low line voltage can sometimes be cleared by turning the machine off and then on again.
Service Tip: Set the Fuser Temperature to NORMAL before starting this service check.
Manually spin the fan and check that
it rotates freely. Check the cable
connection to the engine board, J13
for correct installation.