Actions Yes No
Step 6
Properly connect the modem card cable to the modem card and
controller 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 305.
Replace the
controller board. See
“Controller board
removal” on
page 299.
Blank spaces on incoming fax service check
Actions Yes No
Step 1
Have a fax sent from another machine.
Does the problem remain?
Go to step 2. The problem is
solved.
Step 2
Attach the MFP to a dierent phone line.
Does the problem remain?
Go to step 3. The problem is
solved.
Step 3
Print a test page.
Does the image quality issue remain?
Go to step 4. The problem is
solved.
Step 4
Install a new toner cartridge.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
Stretched words on incoming fax service check
Actions Yes No
Have a fax sent from another machine.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
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Diagnostics and troubleshooting
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