Lexmark MB2236 - Page 174

Action Yes No
Step 7
a Clean the ADF pick rollers and separator pad.
b Enter the Diagnostics menu, and then navigate to:
Scanner diagnostics > Feed test
Does the problem remain?
Go to step 8. The problem is
solved.
Step 8
a Check the ADF pick and feed rollers for wear, damage, and
contamination.
b Check the ADF pick separator pad for wear, damage,
contamination, and spring load.
c Check if the ADF door properly closes.
Is the ADF pick assembly properly installed and free of damage?
Go to step 10. Go to step 9.
Step 9
Replace the ADF pick assembly. See
“ADF pick assembly
removal” on page 260.
Does the problem remain?
Go to step 10. The problem is
solved.
Step 10
a Enter the Diagnostics menu, and then navigate to:
Scanner diagnostics > Motor tests
b Select Motor (ADF transport).
Does the motor run?
Go to step 12. Go to step 11.
Step 11
a Reseat the ADF cable.
b Check the ADF cable for proper connection and damage.
c Check the ADF assembly for proper installation and damage.
d Check the ADF door sensor for damage.
Is the ADF assembly properly installed and free of damage?
Go to step 13. Go to step 12.
Step 12
Replace the ADF assembly. See
“ADF scanner and flatbed
scanner removal” on page 261.
Does the problem remain?
Go to step 13. The problem is
solved.
Step 13
a Reseat all the cables on the controller board.
b Check if the controller board LED lights up.
c Check the controller board for proper installation and damage.
Is the controller board properly installed and free of damage?
Contact the next
level of support.
Go to step 14.
3400-48x
Diagnostics and troubleshooting
174