MODEL LC-20SH1E - Page de test - Free

No Sound (1/2)LC-20SH1ENo sound fromfront speaker.No Sound fromheadphoneNo Sound fromoutput line24Is input at pin (9) ofIC3301 in "H" state?YesIs output at pins (C17)and (D17) of IC501normal?YesIs output at pins (2), (4),(10) and (12) of IC3301normal?YesCheck front speakerand connection cable.NoMuting effect is on.No Is output at pins (C16) NoIs input at pins (2) andCheck the line and itsCheck the SP_Mute (3) of J3701 normal?peripheral parts.and (D16) of IC501line and its peripheralnormal?NoNoCheck IC501, R_IN,L_IN line and theirperipheral parts.Check IC3301 andits peripheral parts.YesIs output at pin (3) ofD3901 in "L" state?YesCheck Q3901, Q3904,Q3905 and theirperipheral parts.NoCheck IC501 and itsperipheral parts.Check the L_MUTE,SO_DEF line and theirperipheral parts.TROUBLE SHOOTING TABLE (Continued)