Lexmark CS310 Service Manual page 118

Actions
Step 3
Are the USB ground contacts attached to the USB connections on the
controller board and controller board cage?
Step 4
Install the USB ground contacts in the controller board.
Did this fix the problem?
Step 5
Turn the printer off, and remove the rear cover. See
on page 290.
Is the LVPS cable correctly connected at JLVPS1 on the controller board?
Step 6
Turn the printer off, and then on.
Does the problem persist?
Yes
Go to step 5.
Problem solved.
Go to step 6.
"Rear cover removal"
Go to step 7.
Diagnostic information
118
5027
No
Go to step 4.
Go to step 5.
Reconnect the cable at
JLVPS1, and then go to
step 6.
Problem solved.