Lexmark CX310 Service Manual page 183

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?
Yes
Problem resolved.
Contact your next level
of support.
Diagnostic information
183
7527
No
Go to step 10.
Replace the controller
board. See "Controller
board removal" on
page 309.