Samsung SCX-4828FN/XAZ Service Manual page 123

Alignment & Troubleshooting
7) Defective FAX RECEIVE (3)
Description : The phone is ringing continuously, but it cannot receive.
Even when the RECEIVE Mode is
Check if the RECEIVE Mode is
changed to FAX MODE, it cannot
MODE or FAX MODE.
the Main B'd in sequence.
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Service Manual
Samsung Electronics