Lexmark X940e Owners Manual

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11Check the transfer belt drive motor assembly drive gear for 
damage.
1. Remove the transfer belt unit assembly. Go to 
“Transfer belt drive motor assembly removal” on 
page 4-93.
2. Inspect the transfer belt drive motor assembly drive gear 
(D) for damage.
Is the transfer belt drive motor assembly drive gear 
damaged?Replace the 
transfer belt drive 
motor assembly.Contact the next 
level of support.
12Check the transfer belt steering motor for...

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904.02 Sensor (transfer belt edge) failure
Step Check Yes No
1Reset the transfer belt HP failure lock out condition.
1. Enter the Diagnostics Menu.
2. Touch Trans belt fail HP.
3. Touch Trans belt fail HP.
Does the transfer belt appear damaged or torn in half?Go to step 2. Go to step 3.
2Check the transfer belt unit assembly for proper installation.
Is the above component properly installed?Go to step 2. Re-install the 
transfer belt unit 
assembly.
3Check...

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3Are the PC cartridge units correctly installed?
Refer to the following images. Note that the far left PC 
cartridge unit is tilted in the first image.
Incorrect:
Correct:Go to the next 
step.Remove and 
reinstall the PC 
cartridge units 
correctly. See “PC 
cartridge unit 
removal” on 
page 4-54.
4Do the PC units easily slide in and out of the machine? Go to the next 
step.Replace any 
damaged PC units 
or any damaged 
erase lamp 
assembly. See 
“PC...

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5Check that the transfer belt steering mechanism lock 
packaging was fully removed. If not removed before the 
transfer belt lever is lowered, the transfer belt steering 
mechanism lock might break and remain inside the machine 
in the area, as showing in the following image (A).
The following images show the transfer belt steering 
mechanism lock.
Are there any remnants from the packaging?Remove any 
packaging 
remnants.Go to the next 
step.
6Check the...

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904.03 Sensor (2nd transfer roll retract HP) late error
Step Check Yes No
1Perform a POR.
Does the error occur when the power is turned off/on?Go to step 2. Perform several 
print tests. 
If the problem 
remains, go to 
step 2.
2Check to ensure that the transfer belt lift mechanism is 
functioning properly. See “Transfer belt lift mechanism 
adjustment” on page 4-277. 
Does the error remain?Go to the next 
step.The problem is 
resolved.
3Check the...

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904.04 Sensor (2nd transfer roll retract HP) lag error
7Perform a print test.
Does the error continue?Replace the lower 
printer engine card 
assembly.
Go to “Lower 
printer engine 
card assembly 
removal” on 
page 4-91.
If the problem 
persists, go to the 
next step.
Problem solved.
8Perform a POR.
Does the error occur when the power is turned off/on?Contact the next 
level of support.Problem solved.
Step Check Yes No
1Perform a POR.
Does the error occur...

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5Check the 2nd transfer roll retract motor for proper 
connection.
Is the above component properly connected? Replace the 2nd 
transfer roll retract 
motor
. Go toReplace the 
connection. 
6Perform a print test.
Does the error continue?Replace the lower 
printer engine card 
assembly.
Go to “Lower 
printer engine 
card assembly 
removal” on 
page 4-91.
Problem solved.
7Perform a POR.
Does the error occur when the power is turned off/on?Replace the...

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904.05 Sensor (CMY transfer roll retract HP) late error
Step Check Yes No
1Perform a POR.
Does the error occur when the power is turned off/on?Go to step 2. Perform several 
print tests. 
If the problem 
remains, go to 
step 2.
2Did the error occur following a developer unit replacement? Verify the 
developers are 
installed correctly. 
See “Developer 
unit assembly 
removal” on 
page 4-63. Go to the next 
step.
3Check to ensure that the transfer belt lift...

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5Do the PC units easily slide in and out of the machine? Go to the next 
step.Replace any 
damaged PC units 
or any damaged 
erase lamp 
assembly. See 
“PC cartridge 
unit removal” on 
page 4-54, “K 
erase lamp 
assembly 
removal” on 
page 4-76, or 
“CMY erase lamp 
assembly 
removal” on 
page 4-75 .
6Check that the transfer belt steering mechanism lock 
packaging was fully removed. If not removed before the 
transfer belt lever is lowered, the...

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904.06 Sensor (CMY transfer roll retract HP) lag error
Step Check Yes No
1Check the transfer belt unit assembly. 
Is the above component properly installed?To to step 2 Properly reinstall 
the transfer belt 
unit assembly.
2Perform a POR.
Does the error occur when the power is turned off/on?Go to step 3. Perform several 
print tests. 
If the problem 
remains, go to 
step 3.
3Did the error occur following a developer unit replacement? Verify the 
developers...