Daewoo AKD-0105 Series Service Manual

Contents

FUNCTION OF MICOM IC4110-4. PIN DESCRIPTIONPIN1807877717673,3175747270696867792535455PIN NAMEXINXOUTEO1EO2EO3VSSVDDFMINAMINSUBPDHCTRLCTRSNS_HOLD_TEST1TEST2NCDESCRIPTIONCONNECTION TO 4.5 MHz CRYSTALOUTPUT COMPARED WITH PHASEIF LOCAL OSCILLATION FREQUENCY IS HIGHER THAN STANDARDFREQUENCY.OUTPUT IS HIGH, IF NOT OUTPUT IS LOW, AND IF SAME OUTPUT ISHIGH-Z.OUTPUT TERMINAL FOR AM 2ND CHANGE PUMP.(IF STANDARD FREQUENCY OF AM IS 90kHZ)--REFER TO ATTACHED PAGE.POWER TERMINALINPUT TERMINAL IF FM VCO (LOCAL OSCILLATION)INPUT RANGE:INPUT TERMINAL IF AM VCO (LOCAL OSCILLATION)INPUT RANGE:OUTPUT OF PLL LOCK UP SUB FOR SPEEDY PLL LOCK.REFER TO ATTACHED PAGE ABOUT CIRCUIT USED.INPUT TERMINAL OF FM IF COUNTINPUT RANGE : 107MHz + 30kHz, Vpp=INPUT TERMINAL OF AM IF COUNTINPUT RANGE : 450kHz + 1kHz (AM): 450kHz + 0.37kHz (LW)Vpp=PART THAT CHECKS DAMAGE OF BACK-UP MEMORY AFTERCOMING BACK TO (BACK-UP)MODE.REFER TO ATTACHED PAGE ABOUT CIRCUIT USED.CONTROL TERMINAL OF BACK UP MODE.IF INPUT IS HIGH, WORKING IS NORMAL.IF INPUT IS LOW, IT REVERTS TO BACK UP MODE.IF INPUT OF (ACC)IN IS LOW ACCORDING TO CLOCK OPTION CLOCK ISDISPLAYED.TEST PORT (CONNECTED TO GROUND)NCI/OIOOOOIIOIIII--OOO