Actions Yes No
Step 1
Is the phone line properly connected to the modem card and the wall jack?
Go to step 2. Go to step 3.
Step 2
Properly connect the phone line to the modem card and wall jack.
Did this fix the problem?
Problem resolved. Go to step 3.
Step 3
Test the phone line’s ability to send and receive calls.
Did the phone line work properly?
Go to step 5. Go to step 4.
Step 4
Use the MFP on a properly functioning phone jack.
Did this fix the problem?
Problem resolved. Go to step 5.
Step 5
Is the modem card ribbon cable properly connected to the system board
at JMOD2 and the modem card?
Go to step 7. Go to step 6.
Step 6
Properly connect the modem card cable to the modem card and system
board.
Did this fix the problem?
Problem resolved. Go to step 7.
Step 7
Check the modem card ribbon cable for continuity.
Is there continuity?
Go to step 8. Replace the modem
card cable.
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?
Replace the fax card.
See “Modem removal”
on page 238.
Replace the controller
board. See “Controller
board removal” on
page 231.
Fax reception service check
Note: Before performing this service check, verify that the correct country code for the MFP is selected. This setting
must match the country in which the MFP is used to transmit and receive faxes. If the setting is wrong, the modem
settings can be changed in the Fax/SE menu. See step 14. These settings should only be performed with guidance
from your second-level support.“ADF feed errors service check” on page 136.
7015
Diagnostic information
139
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