Daewoo AKD-0275 Series Service Manual

Contents

Daewoo AKD-0275 Series Service Manual Manual pdf 31 page image

FUNCTION OF MICOM IC9-2. PIN DESCRIPTIONS- 29 -PIN1807877717673,3175747270696867792121155PIN NAMEXINXOUTEO1EO2EO3VSSVDDFMINAMINSUBPDHCTRLCTRSNS_HOLD_TEST1TEST2PE2PE3INT1DESCRIPTIONCONNECTION TO 4.5 MHz CRYSTALOUTPUT COMPAIRED WITH PHASEIF LOCAL OSCILLATION FREQUENCY IS HIGHER THANSTANDARD FREQUENCY.OUTPUT IS HIGH, IF NOT OUTPUT IS LOW, AND IF SAME OUTPUTIS HIGH-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 OPTIONCLOCK IS DISPLAYED.TEST PORT (CONNECTED TO GROUND)RECEIVING RDS DATA FROM RDS DEMODULATOR IC.REFER TO ATTACHED PAGE ABOUT DATA TIMING CHART.I/OIOOOOIIOIIII--III