Lexmark CS310 Service Manual page 56

Actions
Step 3
Turn the printer off, and then remove the rear cover. See
removal" on page 290.
Is the cable correctly connected to JBIN1 on the controller board and to
the sensor?
Step 4
Turn the printer on, and check the values at JBIN1:
Pin 4: 0 V dc (+5 V dc during cycle)
Pin 5: +0 V dc (unblocked), +3.3 V dc (blocked)
Pin 6: Ground
Are the values correct?
Yes
Go to step 5.
"Rear cover
Replace the fuser exit
sensor. See
sensor removal" on
page
Diagnostic information
56
No
Reconnect the cable.
Replace the controller
"Fuser exit board. See
board removal" on
228. page 291.
5027
"Controller