Self diagnosisPicture TestPlease perform the picture test if there is a problem on the screen. Check the color pattern on the screen, and analyzewhether the TV is defective.1. Please press the '-' button for more than 5 seconds.>- The "Self Diagnostic Test" message is displayed.2. Press the ,_.or • button to select "Picture Test", then press the ENTERbutton.>- The "Does the problem still exist with this test pattern?" message willappear.3. Press the 4 or _ button to select "Yes" or "No".' Yesi !tls regarded asTv set defect, and the contact information OfSamsung Ca!! center is shownl, No: It's not regarded as TVset defect. If the self diagnosis picture isOK, Picture distortion may caused by your external device, Pleasecheck connection_ !f the problem still persists, refer to the externaldevice's user manual.Sound TestIf you believe that there is a problem with the sound, please perform the sound test. You can check if the TV is defective byplaying a melody through the TV.1. Please press the '-' button for more than 5 seconds. /_>- The "Self Diagnostic Test" message is displayed.2. Press the A or T button to select "Sound Test", then press the ENTERbutton.>- The "Does the problem still exist with this sound test?" message isdisplayed.3. Press the 4 or _ button to select "Yes" or "No".' Yes! It's regarded as TV Set defect, and the Contact information ofSamsung Call center is shown:- No: lt:s not regarded as TV set defectl If the se!f diagnosis sound is OK;sound distortion may caused by your external device. Please checkconnection, If the proble m still persists, refer to th e externa! devicelsuser manual.>- The melody will be heard during the test even if the "Select Speaker" isset to "External Speaker" or the sound is muted by pressing the MUTEbutton.>- If headphones are connected, the test melody will play through the headphones.