Lexmark X 850 Owners Manual

							Diagnostic information2-43
7500-XXX
202.00 Sensor (fuser exit) off jam 
8 Check the registration clutch connection.
Is the registration clutch properly connected?Replace the 
registration clutch. 
Go to 
“Registration 
clutch assembly 
removal” on 
page 4-80.Replace the 
connection.
9 Perform a print test.
Does the error continue?Replace the 
printer engine card 
assembly.
Go to “Printer 
engine card 
assembly 
removal” on 
page 4-117Problem solved.
Step Check Yes No
1 Check the media position.
Open the printer left door assembly and visually check it.
Does the media touch the sensor (fuser exit)?Remove the 
media.Go to step 2.
2 Check the roll. 
Open the printer left door assembly and check it.
Is the transport roll assembly free of excess wear and 
contamination?Go to step 3. Clean or replace 
the transport roll 
assembly.
3 Check the sensor (fuser exit) for proper operation.
1. Enter the Diagnostics Menu.
2. Touch BASE SENSOR TEST.
3. Touch Media Path.
4. Touch Fuser exit.
Open the printer left door assembly and check it.
The area around the actuator is very hot. Allow the fuser 
area to cool before proceeding. 
Does the display, on the operator panel, change every time 
the sensor actuator is operated?Go to step 5. Go to step 4.
4 Check the sensor (fuser exit) connection.
Is the sensor (fuser exit) properly connected?Replace the 
sensor (fuser exit).
Go to “Sensor 
(fuser exit) 
removal” on 
page 4-103.Replace the 
connection.
5 Perform a print test.
Does the error continue?Replace the 
printer engine card 
assembly.
Go to “Printer 
engine card 
assembly 
removal” on 
page 4-117.Problem solved. Step Check Yes No 
						

							2-44MFP Service Manual 7500-XXX
202.01 Sensor (fuser exit) off (too short) jam   
Step Check Yes No
1 Check the media position.
Open the printer left door assembly and visually check it.
Does the media touch the sensor (fuser exit)?Remove the 
media.Go to step 2.
2 Check the fuser unit assembly for a media jam.
Open the printer left door assembly and check it.
Is there a media jam in the fuser unit assembly?Remove the 
media.Go to step 3.
3 Check the fuser unit assembly for proper installation. 
Open the printer left door assembly and check it.
Is the fuser unit assembly installed properly?Go to step 4. Install the fuser 
unit assembly 
properly.
Go to “Fuser unit 
assembly 
removal” on 
page 4-104.
4 Checking the roll.
Open the printer left door assembly and check it.
Is the transport roll assembly free of excess wear and 
contamination?Go to step 5. Clean or replace 
the transport roll 
assembly.
Go to “Transfer 
roll guide 
assembly 
removal” on 
page 4-77.
5 Check the sensor (fuser exit) for operation.
1. Enter the Diagnostics Menu.
2. Touch BASE SENSOR TEST.
3. Touch Media Path.
4. Touch Fuser exit.
Open the printer left door assembly and check it.
Caution: The area around the actuator is very hot. Allow 
the fuser area to cool before proceeding. 
Does the display, on the operator panel, change every time 
the sensor actuator is operated?Go to step 7. Go to step 6.
6 Check the sensor (fuser exit) connection.
Is the sensor (fuser exit) properly connected?Replace the 
sensor (fuser exit).
Go to “Sensor 
(fuser exit) 
removal” on 
page 4-103.Replace the 
connection.
7 Perform a print test.
Does the error continue?Replace the 
printer engine card 
assembly.
Go to “Printer 
engine card 
assembly 
removal” on 
page 4-117.Problem solved. 
						

							Diagnostic information2-45
7500-XXX
202.02 Sensor (fuser exit) static jam 
203.00 Sensor (exit 2) on jam
Step Check Yes No
1 Check the media position.
Open the printer left door assembly and visually check it.
Does the media touch the sensor (fuser exit).
Open the printer left door assembly and visually check it.?Remove the 
media.Go to step 2.
2 Check the sensor (fuser exit) for operation.
1. Enter the Diagnostics Menu.
2. Touch BASE SENSOR TEST.
3. Touch Media Path.
4. Touch Fuser exit.
Open the printer left door assembly and check it.
Caution: The area around the actuator is very hot. Allow 
the fuser area to cool before proceeding. 
Does the display, on the operator panel, change every time 
the sensor actuator is operated?Go to step 4. Go to step 3.
3 Is the sensor (fuser exit) properly connected? Replace the 
sensor (fuser exit). 
Go to “Sensor 
(fuser exit) 
removal” on 
page 4-103.Replace the 
connection.
4 Perform a print test.
Does the error continue?Replace the 
printer engine card 
assembly.
Go to “Printer 
engine card 
assembly 
removal” on 
page 4-117.Problem solved.
StepCheckYe sNo
1Check the media position. 
Open the printer left door assembly, and visually check 
it.
Does the media touch the sensor (fuser exit)?Remove the media.Go to step 2.
2Check the media position. 
Open the exit 2 left door assembly, and visually check it.
Does the media touch the sensor (exit 2)?Remove the media.Go to step 3.
3Check the roll.
Open printer left door assembly.
Is the exit 1 media exit roll assembly free of excess wear 
and contamination?Go to step 4.Clean or replace the 
exit 1 media shift 
assembly.
Go to “Exit 1 media 
shift assembly 
removal” on 
page 4-105 
						

							2-46MFP Service Manual 7500-XXX
4Check the drive power transmission.
Does the exit 1 media exit roll assembly and the other 
gears rotate smoothly?Go to step 5.Replace damaged 
components.
Go to “Exit 1 media 
shift assembly 
removal” on 
page 4-105.‘
5Check the sensor (fuser exit) for operation.
1. Enter the Diagnostics Menu.
2. Touch BASE SENSOR TEST.
3. Touch Media Path.
4. Touch Fuser exit.
Open the printer left door assembly and check it.
Caution: The area around the actuator is very hot. 
Allow the fuser area to cool before proceeding. 
Does the display, on the operator panel, change every 
time the sensor actuator is operated?Go to step 7.Go to step 6.
6Check the sensor (fuser exit).
Is the above sensor connected properly?Replace the sensor 
(fuser exit).
Go to “Sensor 
(fuser exit) 
removal” on 
page 4-103.Replace the 
connection.
7Check the exit 2 drive motor for proper operation. 
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Printer Motor Test.
4. Touch Exit2 drive mtr.
5. Touch Forward or reverse.
Does the above motor rotate normally?Go to step 9.Go to step 8.
8Check the exit 2 drive motor for proper operation.
Is the above motor connected properly?Replace the exit 2 
unit assembly.
Go to “Exit 2 unit 
assembly removal” 
on page 4-315.Replace the 
connection.
9Check the sensor (exit 2) for proper operation.
1. Enter the Diagnostics Menu.
2. Touch BASE SENSOR TEST.
3. Touch Media Path.
4. Touch Exit2.
Open the printer left door assembly and the exit 2 left 
door assembly.
Does the display on the operator panel change every 
time the actuator on the above sensor operates?Go to step 11.Go to step 10.
10Check the sensor (exit 2) for proper connection.
Is the above sensor connected properly?Replace the sensor 
(exit 2).
Go to “Exit 2 
sensor (exit 2) 
removal” on 
page 4-328.Replace the 
connection.
StepCheckYe sNo 
						

							Diagnostic information2-47
7500-XXX
203.01 Sensor (exit 2) off jam
11Check the media diverter solenoid for proper operation.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Printer Motor Test.
4. Touch Diverter solenoid.
Open the printer left door assembly.
Does the above component operate normally?Go to step 13.Go to step 12.
12Check the media diverter solenoid for proper 
connection.
Is the above component connect properly?Replace the media 
diverter solenoid.
Go to “Exit 2 media 
diverter solenoid 
removal” on 
page 4-327.Replace the 
connection.
13Perform a print test.
Does the error still occur?Replace the exit 
interface card 
assembly. 
Go to “Exit 
interface card 
assembly removal” 
on page 4-116.
Go to step 14.Problem solved.
14Perform a print test.
Does the error still occur?Replace the printer 
engine card 
assembly.
Go to “Printer 
engine card 
assembly removal” 
on page 4-117.Problem solved.
StepCheckYe sNo
1Check the media position.
Open the exit 2 left door assembly, and visually check it.
Does the media touch the sensor (exit 2)?Remove the media.Go to step 2.
2Check the roll. 
Open the exit 2 left door assembly.
Is the exit 2 media transport roll assembly free of excess 
wear and contamination?Go to step 3.Clean or replace the 
exit 2 unit assembly.
Go to “Exit 2 unit 
assembly removal” 
on page 4-315.
3Check the drive power transmission. 
Do the exit 2 media transport roll assembly and the 
other gears rotate smoothly?Go to step 4.Replace damaged 
parts.
Go to “Exit 2 unit 
assembly removal” 
on page 4-315.
4Check the roll. 
Open exit 2 left door assembly.
Is the exit 2 media exit roll assembly free of excess wear 
and contamination?Go to step 5.Clean or replace the 
exit 2 unit assembly.
Go to “Exit 2 unit 
assembly removal” 
on page 4-315.
StepCheckYe sNo 
						

							2-48MFP Service Manual 7500-XXX
5Check the drive power transmission.
Do the exit 2 media exit roll assembly and the other 
gears rotate smoothly?Go to step 6.Replace damaged 
parts.
Go to “Exit 2 unit 
assembly removal” 
on page 4-315.
6Check the sensor (exit 2) for proper operation.
1. Enter the Diagnostics Menu.
2. Touch BASE SENSOR TEST.
3. Touch Media Path.
4. Touch Exit2.
Open the printer left door assembly and the exit 2 left 
door assembly.
Does the display on the operator panel change every 
time the actuator on the above sensor operates?Go to step 8.Go to step 7.
7Check the sensor (exit 2) for proper connection.
Is the above sensor connected properly?Replace the sensor 
(exit 2).
Go to “Exit 2 
sensor (exit 2) 
removal” on 
page 4-328.Replace the 
connection.
8Check the exit 2 drive motor for proper operation. 
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Printer Motor Test.
4. Touch Exit2 drive mtr.
5. Touch Forward or reverse
Does the above motor rotate normally?Go to step 10.Go to step 9.
9Check the exit 2 drive motor for proper connection.
Is the above motor connected properly?Replace the exit 2 
unit assembly.
Go to “Exit 2 unit 
assembly removal” 
on page 4-315.Replace the 
connection.
10Perform a print test.
Does the error still occur?Replace the exit 
interface card 
assembly. 
Go to “Exit 
interface card 
assembly removal” 
on page 4-116.
Go to step 11.Problem solved.
11Perform a print test.
Does the error still occur?Replace the printer 
engine card 
assembly.
Go to “Printer 
engine card 
assembly removal” 
on page 4-117.Problem solved.
StepCheckYe sNo 
						

							Diagnostic information2-49
7500-XXX
203.02 Sensor (exit 2) on jam in standard bin or finisher
StepCheckYe sNo
1Check the position of the media diverter solenoid.
Is the media diverter gate facing toward exit 1?Go to step 2.Go to step 3.
2Check the media diverter gate for an obstruction.
Is the media diverter gate free of any debris or 
obstructions?Remove any 
obstructions.Go to step 3.
3Check the diverter solenoid for proper operation.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Printer Motor Test.
4. Touch Diverter solenoid.
Open the printer left door assembly.
Does the above component operate normally?Go to step 5.Go to step 3.
4Check the media diverter solenoid for proper 
connection.
Is the above component connected properly?Replace the exit 2 
unit assembly.
Go to “Exit 2 unit 
assembly removal” 
on page 4-315.Replace the 
connection.
5Check the media position.
Open the exit 2 left door assembly, and visually check it.
Does the media touch the sensor (exit 2)?Remove the media.Go to step 6.
6Check the sensor (exit 2) for proper operation.
1. Enter the Diagnostics Menu.
2. Touch BASE SENSOR TEST.
3. Touch Media Path.
4. Touch Exit2.
Open the printer left door assembly and the exit 2 left 
door assembly.
Does the display on the operator panel change every 
time the actuator on the above sensor operates?Go to step 8.Go to step 7.
7Check the sensor (exit 2) for proper connection.
Is the above sensor connected properly?Replace the sensor 
(exit 2).
Go to “Exit 2 
sensor (exit 2) 
removal” on 
page 4-328.Replace the 
connection.
8Perform a print test.
Does the error still occur?Replace the exit 
interface card 
assembly. 
Go to “Exit 
interface card 
assembly removal” 
on page 4-116.
Go to step 9.Problem solved. 
						

							2-50MFP Service Manual 7500-XXX
203.03 Sensor (exit 2) static jam
9Perform a print test.
Does the error still occur?Replace the printer 
engine card 
assembly.
Go to “Printer 
engine card 
assembly removal” 
on page 4-117.Problem solved.
StepCheckYe sNo
1Check the media position.
Open the exit 2 left door assembly, and visually check it.
Does the media touch the sensor (exit 2)?Remove the media.Go to step 2.
2Check the sensor (exit 2) for proper operation.
1. Enter the Diagnostics Menu.
2. Touch BASE SENSOR TEST.
3. Touch Media Path.
4. Touch Exit2.
Open the printer left door assembly and the exit 2 left 
door assembly.
Does the display on the operator panel change every 
time the actuator on the above sensor operates?Go to step 4.Go to step 3.
3Check the sensor (exit 2) for proper connection. 
Is the above sensor connected properly?Replace the sensor 
(exit 2).
Go to “Exit 2 
sensor (exit 2) 
removal” on 
page 4-328.Replace the 
connection.
4Perform a print test.
Does the error still occur?Replace the exit 
interface card 
assembly. 
Go to “Exit 
interface card 
assembly removal” 
on page 4-116.
Go to step 5.Problem solved.
5Perform a print test.
Does the error still occur?Replace the printer 
engine card 
assembly.
Go to “Printer 
engine card 
assembly removal” 
on page 4-117.Problem solved.
StepCheckYe sNo 
						

							Diagnostic information2-51
7500-XXX
230.00 Sensor (duplex wait) on jam 
StepCheckYe sNo
1Check the media position.
Does the media remain in the exit 2?
Open the exit 2 left door assembly, and visually check it.Remove the media.Go to step 2.
2Check the roll. 
Open exit 2 left door assembly.
Is the exit 2 media transport roll assembly free of excess 
wear and contamination?Go to step 3.Clean or replace the 
exit 2 unit assembly.
Go to “Exit 2 unit 
assembly removal” 
on page 4-315.
3Check the drive power transmission. 
Does the exit 2 media transport roll assembly and the 
other gears rotate smoothly?Go to step 4.Replace damaged 
parts.
Go to “Exit 2 unit 
assembly removal” 
on page 4-315.
4Check the roll. 
Open exit 2 left door assembly.
Is the exit 2 media exit roll assembly free of excess wear 
and contamination?Go to step 5.Clean or replace the 
exit 2 unit assembly.
Go to “Exit 2 unit 
assembly removal” 
on page 4-315.
5Check the drive power transmission. 
Does the exit 2 media exit roll assembly and the other 
gears rotate smoothly?Go to step 6.Replace damaged 
parts.
Go to “Exit 2 unit 
assembly removal” 
on page 4-315.
6Check the exit 2 drive motor for proper operation. 
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Printer Motor Test.
4. Touch Exit2 drive mtr.
5. Touch Forward or reverse.
Does the above motor rotate normally?Go to step 9.Go to step 7.
7Check the exit 2 drive motor for proper connection. 
Is the above motor connected properly?Replace the exit 2 
unit assembly.
Go to “Exit 2 unit 
assembly removal” 
on page 4-315.Replace the 
connection.
8Check the connection between the exit interface card 
assembly and the printer engine card assembly.
Are connectors PJ431 and PJ421 connected properly?Go to step 9.Replace the 
connection.
9Check the sensor (duplex wait) for proper operation.
1. Enter the Diagnostics Menu.
2. Touch DUPLEX TESTS.
3. Touch Sensor Test.
4. Touch Duplex wait.
Open the duplex left door assembly.
Does the display on the operator panel change every 
time the actuator on the above sensor operates?Go to step 11.Go to step 10. 
						

							2-52MFP Service Manual 7500-XXX
230.00 Sensor (duplex wait) on jam
10Check the sensor (duplex wait) for proper connection. 
Is the above sensor connected properly?Replace the sensor 
(duplex wait).
Go to “Duplex 
sensor (duplex 
wait) removal” on 
page 4-307.Replace the 
connection.
11Perform a print test.
Does the error still occur?Replace the exit 
interface card 
assembly. 
Go to “Exit 
interface card 
assembly removal” 
on page 4-116.
Go to step 11.Problem solved.
12Perform a print test.
Does the error still occur?Replace the duplex 
controller card 
assembly. 
Go to “Duplex 
controller card 
assembly removal” 
on page 4-304.
Go to step 13.Problem solved.
13Perform a print test.
Does the error still occur?Replace the printer 
engine card 
assembly.
Go to “Printer 
engine card 
assembly removal” 
on page 4-117.Problem solved.
StepCheckYe sNo
1Check the paper position.
Open the exit 2 left door assembly, and visually check it.
Does the paper remain in the exit 2?Remove the paper.Go to step 2.
2Check the roll. 
Open exit 2 left door assembly.
Is the exit 2 media transport roll assembly free of 
excess wear and contamination?Go to step 3.Clean or replace the 
exit 2 unit assembly.
Go to “Exit 2 unit 
assembly removal” 
on page 4-315.
3Check the drive power transmission.
Do the exit 2 media transport roll assembly and the 
other gears rotate smoothly?Go to step 4.Replace damaged 
components or the 
exit 2 unit assembly.
Go to “Exit 2 unit 
assembly removal” 
on page 4-315.
4Check the roll. 
Open exit 2 left door assembly.
Is the exit 2 media exit roll assembly free of excess 
wear and contamination?Go to step 5.Clean or replace the 
exit 2 unit assembly.
Go to “Exit 2 unit 
assembly removal” 
on page 4-315.
StepCheckYe sNo