Lexmark CX310 Service Manual page 173

Action
Step 9
•
For 550 input option, replace the optional 550-sheet drawer.
•
For 650 input option, replace the optional 650-sheet duo drawer.
Does this fix the problem?
Step 10
a
Turn off the printer.
b
Remove the rear cover. See
c
Disconnect the cable at JOPT1 on the controller board.
d
Turn the printer on.
e
Measure the voltages below:
JOPT1:
• Pin 2: Ground
• Pin 3: Ground
• Pin 5: +24 V dc
• Pin 6: Ground
•
Pin 7: +5 V dc
•
Pin 9: Ground
•
Pin 10: Ground
Are the voltages correct?
Tray 2 or tray 3 not detected service check
Action
Step 1
a
POR the printer.
b
Reseat the input options.
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?
Yes
Problem resolved.
Contact your next level
of support.
Yes
Go to step 2.
Go to step 3.
Go to step 8.
Diagnostic information
173
7527
No
Go to step 10.
Replace the controller
board. See "Controller
board removal" on
page 309.
No
Problem resolved.
Go to step 4.
Go to step 4.