Samsung SCX4521F - B/W Laser - All-in-One Service Manual page 120

6.6.5 Defective FAX RECEIVE (1)
• Description FORWARD is functioning, but RECEIVE is not functioning or the received data is corrupt.
Check and Cause
1. Check if there is a NOISE line by pressing on-hook
dial and listening
2. Use a different fax machine to receive from the
same sender (if possible on the same wall socket).
6.6.6 Defective FAX RECEIVE (2)
• Description Received data are lengthened or cut in the printing.
Check and Cause
1. Check if there is a NOISE line by pressing on-hook
dial and listening
2. Ask sender to send to another fax machine
(if possible connected to the same wall socket)
6.6.7 Defective FAX RECEIVE (3)
• Description The phone is ringing continuously, but it set does not answer the call.
Check and Cause
Check that the RECEIVE Mode is set to FAX MODE.
Samsung Electronics
Solution
1. If you can hear a noisy line when using on-hook dial,
replace or repair the telephone line.
2. Replace the LIU.
Solution
1. If you can hear a noisy line when using on-hook dial,
replace or repair the telephone line
2. Replace LIU or main PBA in sequence.
Solution
If the fault persists even when the RECEIVE Mode is
changed to FAX MODE then replace the LIU and the
Main B'd in sequence.
Troubleshooting
Service Manual
6-25