Modem/Fax Card Service Check - Lexmark MX310 Service Manual

Actions
Step 5
Check the ADF cable to ensure that is it properly connected to the
ADF relay card, and to the main controller board at JADF1.
Is the ADF cable properly connected?
Step 6
Check the ADF cable for continuity. Make sure pin 22 has
continuity.
Does pin 22 have continuity?
Step 7
Replace the ADF. See
Does this fix the situation?

Modem/fax card service check

Note: This service check should be used if the paper feeds and jams in the ADF. If the paper is not
feeding into the ADF see
Actions
Step 1
Is the phone line properly connected to the modem card and the
wall jack?
Step 2
Properly connect the phone line to the modem card and wall jack.
Did this fix the problem?
Step 3
Test the ability of the phone line to send and receive calls.
Did the phone line work properly?
Step 4
Use the MFP on a properly functioning phone jack.
Did this fix the problem?
Step 5
Is the modem card ribbon cable properly connected to the
controller board at JMOD2 and the modem card?
"ADF unit removal" on page
"ADF feed errors service check" on page
Diagnostics and troubleshooting
Yes
Go to step 6.
Go to step 7.
The problem is
solved.
388.
187.
Yes
Go to step 2.
Problem resolved.
Go to step 5.
Problem resolved.
Go to step 7.
189
7015
No
Properly connect the
ADF cable to its
connections.
Replace the ADF
cable. See "ADF
cable removal" on
page 395.
Replace the
controller board. See
"Controller board
removal" on
page 299.
No
Go to step 3.
Go to step 3.
Go to step 4.
Go to step 5.
Go to step 6.