Samsung SCX-4216F Series Service Manual

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TroubleshootingSamsung Electronics 4-374.11.1 No Dial Tone• Description While on-hook button is pressed, there is no dial tone.4.11 Fax & PhoneProblemsCheck and Cause Solution1. Check if the telephone line cord is connected toTEL LINE correctly.2. Check if it makes CLICK sound while OHD key ispressed.3. Check the connection of HARNESS between theLIU and the Main B'D.4. Check if the SPEAKER is connected correctly.1. If the telephone cord is normal but there is no dial tone,then try to replace the LIU B'D.2. If you cannot hear the OHD CLICK sound, the OPEASS'Y may be defective. Try to replace the OPEASS'Y.3. Check the connection of Speaker, and try to replace it.4. Lastly, try to replace the Main B'D.4.11.2 Defective MF DIAL• Description The MF DIAL is not functioning.Check and Cause Solution1. Check if the telephone line is connected correctly.2. Wile the BUTTON KEY is pressed, check to catcha CLICK sound.3. Check the connection of HARNESS between theLIU and the Main PBA.1. If you cannot catch the OHD CLICK sound, the OPEASS'Y may be defective. Try to replace the OPEASS'Y.2. If you can catch a CLICK sound, after checking theconnection of HARNESS between the LIU and theMain PBA, try to replace the HARNESS.3. The problem still persists, then replace the LIU and themain B'D in sequence.Notes:Product supports the MF DIAL type only.