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...

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...

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...

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...

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...

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...

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...

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...

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...

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....