Modem/Fax Card Service Check - Lexmark MX610 Service Manual

Actions
Step 7
Replace the ADF. See "ADF unit removal" on page
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 "ADF feed errors service check" on page
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?
Step 6
Properly connect the modem card cable to the modem card and controller
board.
Did this fix the problem?
Step 7
Check the modem card ribbon cable for continuity.
Is there continuity?
Step 8
Check the voltages from connector JMOD2 on the controller board. Check
Pin 1, 9, 12 and 13 for +3.3VDC. Pin 10 for +5VDC. Pins 2, 4, 5, 6, 7, and 8
are grounds.
Are the signals or voltages present?
Yes
Problem solved.
333.
158.
Yes
Go to step 2.
Problem resolved.
Go to step 5.
Problem resolved.
Go to step 7.
Problem resolved.
Go to step 8.
Replace the fax card.
See
on page
Diagnostic information
160
No
Replace the controller
board. See
board removal" on
page 257.
No
Go to step 3.
Go to step 3.
Go to step 4.
Go to step 5.
Go to step 6.
Go to step 7.
Replace the modem
card cable.
Replace the controller
"Modem removal" board. See
263. board removal" on
page 257.
7016
"Controller
"Controller