Lexmark X 850 Owners Manual

							Diagnostic information2-113
7500-XXX
291.03 Sensor (ADF inverter) off jam
9 Place an undamaged document in the ADF, and perform a 
ADF test.
Does the error remain?Replace the ADF 
controller card 
assembly. 
Go to “ADF 
controller card 
assembly 
removal” on 
page 4-167.Go to step 10.
10 Place an undamaged document in the ADF, and perform a 
ADF test.
Does the error remain?Replace the RIP 
card assembly. 
Go to “RIP card 
assembly 
removal” on 
page 4-128.Problem solved.
Step Check Yes No
1 Check the original document condition.
Is the original document free of paper clips and staples as 
well as damage such as creases, tears, holes or excessive 
wear?Go to step 2. Remove damaged 
original document 
and replace with a 
new undamaged 
original document. 
Perform a ADF 
test. If the problem 
remains, go to 
step 2.
2 Check the ADF rolls for wear.
Is the ADF feed/pick roll assembly or the ADF separation 
roll guide assembly free of excess wear?Go to step 3. Clean or replace 
the ADF feed/pick 
roll assembly or 
the ADF 
separation roll 
guide assembly. 
Go to “ADF feed/
pick roll 
assembly 
removal” on 
page 4-178 or 
“ADF separation 
roll guide 
assembly” on 
page 4-195.
3 Check the media path for contaminates.
Is the media path free of excess media dust and foreign 
objects such as paper clips and staples?Go to step 4. Remove all 
contaminates from 
the media path. Step Check Yes No 
						

							2-114MFP Service Manual 7500-XXX
4 Check the sensor (ADF inverter) for operation.
Perform the sensor (ADF inverter) test.
Open the ADF left cover assembly.
Remove the ADF separation roll guide assembly. Go to 
“ADF separation roll guide assembly” on page 4-195.
1. Enter the Diagnostics Menu.
2. Touch SCANNER TESTS.
3. Touch Sensor Tests.
4. Touch ADF inverter.
Insert a sheet of paper into the ADF paper path entrance.
Manually rotate the ADF exit roll assembly by hand to feed 
the sheet through the ADF to operate the actuator of the 
sensor (ADF inverter).
Does the display on the operator panel change every time 
the sensing area of the above sensor is blocked?Go to step 6. Go to step 5.
5 Check the sensor (ADF inverter) for connection.
Is the above sensor connected properly?Replace the 
sensor (ADF 
inverter). 
Go to “Sensor 
(ADF inverter)” 
on page 4-189.Replace the 
connection.
6 Check the sensor (ADF registration) for operation. 
Perform the sensor (ADF registration) test.
Open the ADF left cover assembly.
1. Enter the Diagnostics Menu.
2. Touch SCANNER TESTS.
3. Touch Sensor Tests.
4. Touch ADF registration.
Place a piece of white paper into the ADF media entrance 
and over the sensor (ADF registration). 
Does the display on the operator panel change every time 
the sensing area of the above sensor is blocked? Go to step 8. Go to step 7.
7 Check the sensor (ADF registration) for connection.
Is the above sensor connected properly?Replace the 
sensor (ADF 
registration). 
Go to “Sensor 
(ADF 
registration)” on 
page 4-187.Replace the 
connection.
8 Check the inverter gate condition.
Is the inverter gate free of damage and warpage and does it 
move smoothly?Go to step 9. Replace the 
inverter gate.
Go to “Inverter 
gate removal” on 
page 4-191. Step Check Yes No 
						

							Diagnostic information2-115
7500-XXX
9 Check the registration motor (forward or reverse) test. 
Perform the registration motor test.
Open the ADF left cover assembly.
Remove the ADF rear cover. Go to “ADF rear cover 
removal” on page 4-165.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Scanner Motor Tests.
4. Touch ADF registration drv mtr 
5. Touch Forward or reverse. 
Does the ADF registration motor operate properly?Go to step 11. Go to step 10.
10 Check the ADF registration motor for connection.
Is the above motor connected properly?Replace the ADF 
registration 
motor. 
Go to “ADF 
registration 
motor removal” 
on page 4-201.Replace the 
connection.
11 Check the inverter solenoid assembly for operation. 
Perform the inverter solenoid test.
Open the ADF left cover assembly.
Remove the ADF front cover assembly. Go to “ADF front 
cover assembly removal” on page 4-166.
Close the ADF left cover assembly.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Scanner Motor Tests.
4. Touch Inverter solenoid.
Does the inverter solenoid assembly operate properly?Go to step 13. Go to step 12.
12 Check the inverter solenoid assembly for connection.
Is the above motor connected properly?Replace the 
inverter solenoid 
assembly. 
Go to “Inverter 
solenoid 
assembly 
removal” on 
page 4-173.Replace the 
connection.
13 Place an undamaged document in the ADF, and perform a 
ADF test.
Does the error remain?Replace the ADF 
controller card 
assembly. 
Go to “ADF 
controller card 
assembly 
removal” on 
page 4-167.Go to step 14.
14 Place an undamaged document in the ADF, and perform a 
ADF test.
Does the error remain?Replace the RIP 
card assembly. 
Go to “RIP card 
assembly 
removal” on 
page 4-128.Problem solved. Step Check Yes No 
						

							2-116MFP Service Manual 7500-XXX
294.00 Sensor (ADF inverter) static jam
Step Check Yes No
1 Check the sensor (ADF inverter).
Is the feed media path free of media or media fragments?Go to step 2. Remove any 
media or media 
fragments.
2 Check the sensor (ADF inverter) for operation.
Perform the sensor (ADF inverter) test.
Open the ADF left cover assembly.
Remove the ADF separation roll guide assembly. Go to “ADF 
separation roll guide assembly” on page 4-195.
1. Enter the Diagnostics Menu.
2. Touch SCANNER TESTS.
3. Touch Sensor Tests.
4. Touch ADF inverter.
Insert a sheet of paper into the ADF paper path entrance.
Manually rotate the ADF exit roll assembly by hand to feed the 
sheet through the ADF to operate the actuator of the sensor 
(ADF inverter).
Does the display on the operator panel change every time the 
sensing area of the above sensor is blocked?Go to step 4. Go to step 3.
3 Check the sensor (ADF inverter) for connection.
Is the above sensor connected properly?Replace the 
sensor (ADF 
inverter). 
Go to “Sensor 
(ADF inverter)” 
on page 4-189.Replace the 
connection.
4 Place an undamaged document in the ADF, and perform a ADF 
test.
Does the error remain?Replace the 
ADF controller 
card assembly. 
Go to “ADF 
controller card 
assembly 
removal” on 
page 4-167.Go to step 5.
5 Place an undamaged document in the ADF, and perform a ADF 
test.
Does the error remain?Replace the 
RIP card 
assembly. 
Go to “RIP 
card assembly 
removal” on 
page 4-128.Problem solved. 
						

							Diagnostic information2-117
7500-XXX
294.01 Sensor (ADF pre-registration) on jam side 2
Step Check Yes No
1 Check the original document condition.
Is the original document free of paper clips and staples as 
well as damage such as creases, tears, holes or excessive 
wear?Go to step 2. Remove damaged 
original document 
and replace with a 
new undamaged 
original document. 
Perform a ADF 
test. If the problem 
remains, go to 
step 2.
2 Check the ADF rolls for wear.
Is the ADF feed/pick roll assembly or the ADF separation 
roll guide assembly free of excess wear?Go to step 3. Clean or replace 
the ADF feed/pick 
roll assembly or 
the ADF 
separation roll 
guide assembly.
Go to “ADF feed/
pick roll 
assembly 
removal” on 
page 4-178 or 
“ADF separation 
roll guide 
assembly” on 
page 4-195.
3 Check the media path for contaminates.
Is the media path free of excess media dust and foreign 
objects such as paper clips and staples?Go to step 4. Remove all 
contaminates from 
the media path.
4 Check the inverter gate condition.
Is the inverter gate free of damage and warpage and does it 
move smoothly?Go to step 5. Replace the 
inverter gate.
Go to “Inverter 
gate removal” on 
page 4-191.
5 Check the sensor (ADF pre registration) for operation.
Perform the sensor (ADF pre registration) test.
Open the ADF left cover assembly.
1. Enter the Diagnostics Menu.
2. Touch SCANNER TESTS.
3. Touch Sensor Tests.
4. Touch ADF pre registration.
Operate the actuator of the sensor (ADF pre registration).
Does the display on the operator panel change every time 
the sensing area of the above sensor is blocked?Go to step 7. Go to step 6.
6 Check the sensor (ADF pre-registration) for connection.
Is the above sensor connected properly?Replace the 
sensor (ADF pre-
registration). 
Go to “Sensor 
(ADF pre-
registration)” on 
page 4-188.Replace the 
connection. 
						

							2-118MFP Service Manual 7500-XXX
7 Check the registration motor (forward or reverse) test. 
Perform the registration motor test.
Open the ADF left cover assembly.
Remove the ADF rear cover. Go to “ADF rear cover 
removal” on page 4-165.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Scanner Motor Tests.
4. Touch ADF registration drv mtr 
5. Touch Forward or reverse. 
Does the ADF registration motor operate properly?Go to step 9. Go to step 8.
87 Check the ADF registration motor for connection.
Is the above motor connected properly?Replace the ADF 
registration motor. 
Go to “ADF 
registration 
motor removal” 
on page 4-201.Replace the 
connection.
9 Check the inverter solenoid assembly for operation. 
Perform the inverter solenoid test.
Open the ADF left cover assembly.
Remove the ADF front cover assembly. Go to “ADF front 
cover assembly removal” on page 4-166.
Close the ADF left cover assembly.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Scanner Motor Tests.
4. Touch Inverter solenoid.
Does the inverter solenoid assembly operate properly?Go to step 11. Go to step 10.
10 Check the inverter solenoid assembly for connection.
Is the above motor connected properly?Replace the 
inverter solenoid 
assembly. 
Go to “Inverter 
solenoid 
assembly 
removal” on 
page 4-173.Replace the 
connection.
11 Place an undamaged document in the ADF, and perform a 
ADF test.
Does the error remain?Replace the ADF 
controller card 
assembly. 
Go to “ADF 
controller card 
assembly 
removal” on 
page 4-167.Go to step 12.
12 Place an undamaged document in the ADF, and perform a 
ADF test.
Does the error remain?Replace the RIP 
card assembly. 
Go to “RIP card 
assembly 
removal” on 
page 4-128.Problem solved. Step Check Yes No 
						

							Diagnostic information2-119
7500-XXX
294.02 Sensor (ADF pre-registration) off jam on inverting
Step Check Yes No
1 Check the original document condition.
Is the original document free of paper clips and staples as 
well as damage such as creases, tears, holes or excessive 
wear?Go to step 2. Remove damaged 
original document 
and replace with a 
new undamaged 
original document. 
Perform a ADF 
test. If the problem 
remains, go to step 
2.
2 Check the ADF rolls for wear.
Is the ADF feed/pick roll assembly or the ADF separation roll 
guide assembly free of excess wear?Go to step 3. Clean or replace 
the ADF feed/pick 
roll assembly or the 
ADF separation roll 
guide assembly. 
Go to “ADF feed/
pick roll 
assembly 
removal” on 
page 4-178 or 
“ADF separation 
roll guide 
assembly” on 
page 4-195.
3 Check the media path for contaminates.
Is the media path free of excess media dust and foreign 
objects such as paper clips and staples?Go to step 4. Remove all 
contaminates from 
the media path.
4 Check the sensor (sheet through) for operation. 
Perform the sensor (sheet through) test.
Open the ADF left cover assembly.
Remove the ADF rear cover. Go to “ADF rear cover 
removal” on page 4-165.
1. Enter the Diagnostics Menu.
2. Touch SCANNER TESTS.
3. Touch Sensor Tests.
4. Touch Sheet through.
Does the display on the operator panel change every time 
the sensing area of the above sensor is blocked?Go to step 6. Go to step 5.
5 Check the sensor (sheet through) for connection.
Is the above sensor connected properly?Replace the 
sensor (sheet 
through). 
Go to “Sensor 
(sheet through) 
removal” on 
page 4-200.Replace the 
connection. 
						

							2-120MFP Service Manual 7500-XXX
6 Check the sensor (ADF pre registration) for operation.
Perform the sensor (ADF pre registration) test.
Open the ADF left cover assembly.
1. Enter the Diagnostics Menu.
2. Touch SCANNER TESTS.
3. Touch Sensor Tests.
4. Touch ADF pre registration.
Operate the actuator of the sensor (ADF pre registration).
Does the display on the operator panel change every time 
the sensing area of the above sensor is blocked?Go to step 8. Go to step 7.
7 Check the sensor (ADF pre-registration) for connection.
Is the above sensor connected properly?Replace the 
sensor (ADF pre-
registration). 
Go to “Sensor 
(ADF pre-
registration)” 
on page 4-188.Replace the 
connection.
8 Check the feed drive motor for correct operation. 
Perform the feed drive motor test.
Open the ADF left cover assembly.
Remove the ADF rear cover. Go to “ADF rear cover 
removal” on page 4-165.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Scanner Motor Tests.
4. Touch ADF feed drv mtr.
Does the feed drive motor rotate properly?Go to step 10. Go to step 9.
9 Check the feed drive motor for connection.
Is the above sensor connected properly?Replace the ADF 
feed drive motor 
assembly.
Go to “ADF feed 
drive motor 
assembly 
removal” on 
page 4-172.Replace the 
connection.
10 Check the inverter solenoid assembly for operation. 
Perform the inverter solenoid test.
Open the ADF left cover assembly.
Remove the ADF front cover assembly. Go to “ADF front 
cover assembly removal” on page 4-166.
Close the ADF left cover assembly.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Scanner Motor Tests.
4. Touch Inverter solenoid.
Does the inverter solenoid assembly operate properly?Go to step 12. Go to step 11. Step Check Yes No 
						

							Diagnostic information2-121
7500-XXX
295.00 Size mismatch jam (mix-size)
11 Check the inverter solenoid assembly for connection.
Is the above motor connected properly?Replace the 
inverter solenoid 
assembly. 
Go to “Inverter 
solenoid 
assembly 
removal” on 
page 4-173.Replace the 
connection.
12 Check the registration motor (forward or reverse) test. 
Perform the registration motor test.
Open the ADF left cover assembly.
Remove the ADF rear cover. Go to “ADF rear cover 
removal” on page 4-165.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Scanner Motor Tests.
4. Touch ADF registration drv mtr 
5. Touch Forward or reverse. 
Does the ADF registration motor operate properly?Go to step 14. Go to step 13.
13 Check the ADF registration motor for connection.
Is the above motor connected properly?Replace the ADF 
registration 
motor. 
Go to “ADF 
registration 
motor removal” 
on page 4-201.Replace the 
connection.
14 Place an undamaged document in the ADF, and perform a 
ADF test.
Does the error remain?Replace the ADF 
controller card 
assembly. 
Go to “ADF 
controller card 
assembly 
removal” on 
page 4-167.Go to step 15.
15 Place an undamaged document in the ADF, and perform a 
ADF test.
Does the error remain?Replace the RIP 
card assembly. 
Go to “RIP card 
assembly 
removal” on 
page 4-128.Problem solved.
Step Check Yes No
1 Check the document tray media guide position.
Are the document tray media guides set correctly?Go to step 2. Adjust the 
document tray 
media guides to 
the proper 
position. Step Check Yes No 
						

							2-122MFP Service Manual 7500-XXX
2 Check the sensor (ADF width APS 1) for operation. 
Perform the sensor (ADF width APS 1) test.
Open the ADF left cover assembly.
1. Enter the Diagnostics Menu.
2. Touch SCANNER TESTS.
3. Touch Sensor Tests.
4. Touch ADF width APS 1.
Operate the actuator of the sensor (ADF width APS 1).
Does the display on the operator panel change every time 
the sensing area of the above sensor is blocked?Go to step 2. Go to step 3.
3 Check the sensor (ADF width APS 1) for connection.
Is the above sensor connected properly?Replace the 
sensor (ADF 
width APS 1). 
Go to “Sensor 
(ADF width APS 
1)” on 
page 4-184.Replace the 
connection.
4 Check the sensor (ADF width APS 2) for operation. 
Perform the sensor (ADF width APS 2) test.
Open the ADF left cover assembly.
1. Enter the Diagnostics Menu.
2. Touch SCANNER TESTS.
3. Touch Sensor Tests.
4. Touch ADF width APS 2.
Operate the actuator of the sensor (ADF width APS 2).
Does the display on the operator panel change every time 
the sensing area of the above sensor is blocked?Go to step 6. Go to step 5.
5 Check the sensor (ADF width APS 2) for connection.
Is the above sensor connected properly?Replace the 
sensor (ADF 
width APS 2). 
Go to “Sensor 
(ADF width APS 
2)” on 
page 4-185.Replace the 
connection.
6 Check the sensor (ADF width APS 3) for operation. 
Perform the sensor (ADF width APS 3) test.
Open the ADF left cover assembly.
1. Enter the Diagnostics Menu.
2. Touch SCANNER TESTS.
3. Touch Sensor Tests.
4. Touch ADF width APS 3.
Operate the actuator of the sensor (ADF width APS 3).
Does the display on the operator panel change every time 
the sensing area of the above sensor is blocked?Go to step 8. Go to step 7. Step Check Yes No