Samsung SCX-4824XBH Service Manual page 120

Alignment & Troubleshooting
3) Defective FAX FORWARD/RECEIVE
Description : The FAX FORWARD/RECEIVE is not functioning.
1. Check if you can catch If the MODEM testing is normal
a dial tone by pressing and there is no dial tone, then try
2. Check if you can
If the MODEM testing is abnormal,
catch a RECEIVE tone while
try to replace the Main B'd.
MODEM testing in the
4-68
Service Manual
Samsung Electronics