Defective Fax Forward - Samsung SCX-4720F Service Manual

7.4.3 Defective FAX FORWARD/RECEIVE
• Description FAX FORWARD/RECEIVE is not functioning.
Check and Cause
1. Check that you can hear a dial tone by pressing
OHD.
2. Check that you can hear a RECEIVE tone when
MODEM testing in TECH Mode.

7.4.4 Defective FAX FORWARD

• Description RECEIVE is functioning, but FORWARD is not functioning or received data is corrupt.
Check and Cause
1. Check if there is a NOISE line by pressing on-hook
dial and listening.
2. Check that the destination fax machine can receive
forwarded faxes by using a different sending fax
machine (preferably from the same wall socket).
3. Check the cable between the set and the wall
socket for damage.
Samsung Electronics
Solution
1. If MODEM testing is normal and there is no dial tone,
then try replacing the LIU B'd.
2. If testing the MODEM shows a fault replace the
Main B'd.
Solution
1. If you can hear a noisy line when using on-hook dial,
replace or repair the telephone line
2. Replace LIU.
3. Replace the line cord.
Troubleshooting
Service Manual
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