Lexmark X940e Owners Manual

Diagnostic information2-205
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Paper is installed (short edge) in the media paper tray
3Check the sensor (media out) connection for proper 
connection on the appropriate media tray.
Is the above component connected properly?Replace the 
appropriate sensor 
(media out). 
Go to “1X 500-
sheet drawer 
(1TM)—sensor 
(media out) 
removal” on 
page 4-250, “3X 
500-sheet drawer 
(3TM)—sensor 
(media out) 
removal” on 
page 4-228, or 
“2000-sheet dual 
input (TTM)—
sensor (media 
out)...

2-206Service Manual 7510
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PC cartridge end of life
Printer front door assembly open
Step Check Yes No
1Check the appropriate PC cartridge for proper installation. 
Is the appropriate PC cartridge installed properly?Go to step 2. Install the 
appropriate PC 
cartridge properly.
2Check the appropriate PC cartridge for damage.
Does the appropriate PC cartridge appear damaged?Replace the 
appropriate PC 
cartridge.Go to step 3.
3Check the developer interlock plate assembly for damage.
Is...

Diagnostic information2-207
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Printer left door open
4Perform a POR.
Does the error continue when the power is turned off/on?Replace the upper 
printer engine card 
assembly.
Go to “Upper 
printer engine 
card assembly 
removal” on 
page 4-88.Problem solved.
Step Check Yes No
1Check the printer left door closed actuator located on the 
rear of the printer left door assembly for damage.
Is the above component, as shown in the graphic below, 
free of damage? Go to step 2. Replace...

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Transfer belt access door open
4Check the switch (printer left door interlock) for proper 
connection.
Is the above component properly connected?Replace the switch 
(printer left door 
interlock). 
Go to“Switch 
(printer left door 
interlock) 
removal” on 
page 4-29.Replace the 
connection.
5Perform a print test.
Does the error continue when the power is turned off/on?Replace the upper 
printer engine card 
assembly.
Go to “Upper 
printer engine 
card...

Diagnostic information2-209
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Printer left lower door assembly open
100K maintenance required
Step Check Yes No
1Check the printer left lower door for proper operation.
Does the above component open and close properly?Go to step 2. Replace the 
printer left lower 
door assembly.
Go to “Printer left 
lower door 
assembly 
removal” on 
page 4-8.
2Check the switch (printer left lower door interlock) for 
operation.
1. Enter the Diagnostics Menu.
2. Touch BASE SENSOR TEST.
3. Touch...

2-210Service Manual 7510
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600K maintenance required
ADF maintenance required
Standard media bin full 
Step Check Yes No
1Install the 600K maintenance kit.
Does the message still occur?Reset the 600K 
maintenance 
counter.
Go to “Scheduled 
maintenance” on 
page 6-3.Problem solved.
Step Check Yes No
1Install the ADF maintenance kit.
Does the message still occur?Reset the ADF 
maintenance 
counter.
Go to “Scheduled 
maintenance” on 
page 6-3.Problem solved.
Step Check Yes No
1Check the...

Diagnostic information2-211
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Scanner unit assembly not detected
ADF left cover assembly is open
Step Check Yes No
1Check the scanner interface cable assembly connection 
between the RIP card assembly and the scanner unit 
assembly.
Is the above component properly connected?Go to step 2. Replace the 
connection.
2Check all connections of the scanner controller card assembly.
Are the connections of the above component properly 
connected?Go to step 3. Replace the 
connection....

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Toner cartridge error 
Toner cartridge set error
5Perform a POR.
Does the error remain when the power is turned off/on 
again?Replace the upper 
printer engine card 
assembly.
Go to “Upper 
printer engine 
card assembly 
removal” on 
page 4-88.Problem solved.
Step Check Yes No
1Check the toner cartridge installation.
Is the correct toner cartridge properly installed?Go to step 2. Install the correct 
toner cartridge 
properly.
2Checking the sensor (RFID...

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Waste toner cartridge full
4Checking the appropriate color sensor (RFID toner 
cartridge). 
Is the above sensor attached and connected properly?Replace the 
appropriate sensor 
(RFID toner 
cartridge).
Go to “Sensor 
(RFID toner 
cartridge) 
removal” on 
page 4-117.Go to step 5.
5Perform a print test. 
Does the error remain?Replace the 
printer engine card 
assembly.
Go to “Upper 
printer engine 
card assembly 
removal” on 
page 4-88.Problem solved....

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Waste toner cartridge not detected
Waste toner cartridge nearly full
Step Check Yes No
1Check the waste toner cartridge.
Is the above component properly installed?Go to step 2. Reinstall the waste 
toner cartridge.
2Check the switch (waste toner cartridge interlock).
Is the above component free of damage?Go to step 4. Go to step 3.
3Check the switch (waste toner cartridge interlock) for proper 
connection.
Is the above component properly connected?Replace...