Daewoo AKD-0105 Series Service Manual

Contents

FUNCTION OF MICOM IC42PIN39401844424143656438476037596662PIN NAMEPO1PO0PO0PN0/BEEPPN2PN3PN1PH1/ADI1PH2/ADI2PO2PM1PJ0PO3PJ1PH0 / ADI0PI0DESCRIPTIONTUNER MUTE PORT.WHEN TUNING, OUTPUT IS HIGH THEN MUTE IS ON.(SEEK, WHEN SD CHECK)AUDIO MUTE PORT, ACTIVE HIGHNCOUTPUT PORT OF BEEP.BEEP COMES OUT AT 2.08, OR 3.75kHz DEPENDING ON OPERATIONREQUESTEDBAND SELECT PORT IN TUNER MODE.FM MW LWBAND_1 H L LBAND_2 L H LWHEN RADIO MODE IS CHOUSED. OUTPUT IS HIGHSTEREO INPUT TERMINALSTARTING IS HIGH, WHEN INPUT IS LOW ON AIR STEREO ISDISPLAYEDSIGNAL DETECTION PORT.STARTING INPUT IS HIGH, INPUT IS CHANGED INTO LOWWHEN RECEIVING THE RADIO FREQUENCY.MUTING (WHEN CHECKING AF IN RADIO MODE)LOW (IN ACTIVE, HIGH AND OTHERS MODES)INPUT TERMINAL OF USING-TELEPHONE SIGNAL STARTING IS HIGH.MUTING IF ACTIVE BECOMESLOCAL MODE HIGHDX MODE LOWSTARTING IS LOWN.CUSED RADIO MODE ONLY. STARTING OUTPUT IS LOW.MONO MODE LOWSTEREO MODE HIGHSIGNAL METER INPUT TERMINALRANGE-AT SEEK LOCAL :DX :AT AFSECURITY CODE STORAGE.NORMAL 5V, ACTIVE 2.5VI/OOOOOOOOIIOOIOOII