AIWA CT-FX530M
Service Manual

IC DESCRIPTION IC, µPD178018AGF/IC, µPD178006AGC-539-3B9
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 Pin Name AM/FM S-M LEVEL-M A-VOL CONT CD CONNECT CD DISP SEL CD CLO CD DI CD DO CD CLI LCD CE DFP LAMP LCD DI LCD DO LCD CLO CD ACC CONT POWER MUTE ST-BY MUTE POWER CONT CONT 1 CONT 2 GND VDD MUTE BAND CONT RADIO CONT RDS MODE IF REQ AM IF FM IF VDD FM OSC AM OSC GND EO 0 EO 1 GND LOC/DX ST IND/SD IN PHONE MUTE I/O I I I I O O I O I O O I/O O O O O O O O O � � O O O O O I I � I I � O O � O I I Description AF signal input during RDS AF operation and FM S meter signal input Level meter signal input Detects microphone input for auto volume operation.Pulled down when not used. CD changer connection check. Pulled down when not used. Determines the timing with which data is transferred to the head unit.Open when not used. Clock output to CD changer. Open when not used. Data input from CD changer. Pulled down when not used. Data output to CD changer. Open when not used. Clock input from CD changer. Open when not used. LCD DRV (LC75854W) CE output. Outputs "H" only when FLAP IN (pin 67) is "L".Open when not used. LCD DRV (LC75854W) data input. Open when not used. LCD DRV (LC75854W) data output. LCD DRV (µIPD16432B) clock output. LCD DRV (LC75854W) clock output. Transmits the power on/off status of head unit to changer. Open when not used. Muting output to power amp Standby/muting output to power amp Unit power control output LCD DRV power control 1 LCD DRV power control 2 Ground for port Power supply for port Audio muting output AM/FM power switching output. AM:�H�, FM: �L�. Radio ON/OFF. Power switching output. Radio ON: �H�. Outputs "H" during RDS AF operation. Open when not used. Output to request IF count signal. AM IF count signal input FM IF count signal input Power supply for PLL FM local oscillation input AM local oscillation input Ground for PLL Error output from charge pump (for FM) Error output from charge pump (for AM) Ground LOC/DX switching output during radio seek (LOC: "H", DX: "L"). Open when not used. Stop pulse input during FM/AM seek. Muting control input -20 dB. Mute: �L�.

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