Usb Service Check - Lexmark CS720 Service Manual

USB service check

Actions
Step 1
Is the USB cable properly connected to the printer and host PC?
Step 2
Try a different USB cable.
Does this fix the issue?
Step 3
Connect a different device to the USB cable.
Did the host PC see the device?
Control panel USB cable service check
Actions
Step 1
a
Remove the controller board shield. See
shield removal" on page
b
Check the USB cable on the JPFUSB1 connector on the
controller board for proper connection.
Is the cable properly connected?
Step 2
Reconnect the cable.
Does the problem remain?
Step 3
Replace the cable.
Does the problem remain?
Step 4
Replace the controller board. See
page 357.
Does the problem remain?
"Controller board
356.
"Controller board removal" on
Diagnostic information
233
Yes No
Go to step 2. Properly connect the
cable at both ends.
Issue fixed. Go to step 3.
Replace the There is an issue
controller board. See with the host
"Controller board machine.
removal" on
page 357.
Yes No
Go to step 3. Go to step 2.
Go to step 3. The problem is
solved.
Go to step 4. The problem is
solved.
Contact the next The problem is
level of support. solved.
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