Lexmark CX310 Service Manual page 176

Tray 2 or tray 3 missing service check
Action
Step 1
a
POR the printer.
b
Reseat the input options.
c
Reinsert the paper input tray.
d
Check if the option paper pick assembly can go down and trigger
manually.
Does the error remain?
Step 2
Is the machine using both 650 and 550 input option tray?
Step 3
a
Make sure the sequence of the input option trays is correct. The 650
option tray should be in tray 2, and the 550 option tray should be in
tray 3.
b
Bring the printer into the Diagnostics Menu.
c
Navigate to Feed Test > Tray # > Single Feed Test.
d
Run a continuous feed test (feed at least 5 pages).
Does the feed test run successfully on each option?
Step 4
Isolate the problem. Verify the problem by installing only one input option
to the printer at a time.
a
Bring the printer into the Diagnostics Menu.
b
Navigate to Feed Test > Tray # > Single Feed Test.
Does the feed test run successfully on each option?
Yes
Go to step 2.
Go to step 3.
Go to step 8.
Go to step 8.
Diagnostic information
176
7527
No
Problem resolved.
Go to step 4.
Go to step 4.
Go to step 5.