Lexmark X940e Owners Manual

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902.00 General upper engine error fuse #1
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 the rear upper cooling fan cables and any associated 
cables for damage.
Are the above components free from crimps and damage?Go to step 3. Repair or replace 
the appropriate 
cable assemblies 
or replace the rear 
upper cooling...

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902.01 General upper engine error fuse #2
7Check the printhead assembly cables and any associated 
cables for damage.
Are the above components free from crimps and damage?Go to step 8. Repair or replace 
the appropriate 
cable assemblies 
or replace the 
printhead 
assembly.
Go to “Printhead 
assembly 
removal” on 
page 4-104.
8Perform a POR.
Does the error occur when the power is turned off/on?Replace the upper 
printer engine card 
assembly.
Go to “Upper...

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902.02 General upper engine error fuse #3
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 the CMYK toner add motor assembly cables and any 
associated cables for damage.
Are the above components free from crimps and damage?Go to step 3. Repair or replace 
the appropriate 
cable assemblies 
or replace the 
CMYK toner add...

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902.03 General lower engine error fuse #1
902.04 General lower engine error fuse #2
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 the duplex drive motor assembly cables and any 
associated cables for damage.
Are the above components free from crimps and damage?Go to step 3. Repair or replace 
the appropriate 
cable assemblies...

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902.05 General lower engine error fuse #3
4Replace the transfer belt unit assembly. Go to “Transfer 
belt unit assembly removal” on page 4-16.
Does the error occur when the power is turned off/on?Replace the lower 
printer engine card 
assembly.
Go to “Lower 
printer engine 
card assembly 
removal” on 
page 4-91.Problem solved.
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...

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902.06 General lower engine error fuse #4
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 the transfer belt steering motor assembly cables and 
any associated cables for damage.
Are the above components free from crimps and damage?Go to step 3. Repair or replace 
the appropriate 
cable assemblies 
or replace the 
transfer belt...

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902.07 General lower engine error fuse #5
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 the registration clutch cables and any associated 
cables for damage.
Are the above components free from crimps and damage?Go to step 3. Repair or replace 
the appropriate 
cable assemblies 
or replace the 
registration clutch.
Go to...

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903.00 K developer/transport drive assembly motor error
7Check the inverter forward clutch cables and any 
associated cables for damage.
Are the above components free from crimps and damage?Go to step 8. Repair or replace 
the appropriate 
cable assemblies 
or replace the 
duplex media 
inverter assembly.
Go to “Duplex 
media inverter 
assembly 
removal” on 
page 4-9.
8Check the inverter reverse clutch cables and any 
associated cables for damage.
Are the...

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903.01 K PC drive motor error
3Check the K developer/transport drive motor assembly for 
proper connection.
Is the above component properly connected?Replace the K 
developer/
transport drive 
motor assembly.
Go to “K 
developer / 
transport drive 
motor assembly 
removal” on 
page 4-106.Replace the 
connection.
4Perform a POR.
Does the error occur when the power is turned off/on?Replace the lower 
printer engine card 
assembly.
Go to “Lower 
printer...

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903.02 CMY PC drive motor error
4Perform a POR.
Does the error occur when the power is turned off/on?Replace the lower 
printer engine card 
assembly.
Go to “Lower 
printer engine 
card assembly 
removal” on 
page 4-91.Problem solved.
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 the CMYK PC cartridge drive motor assembly for...