Aiwa CDC-X227 YZ Service Manual page 29

Pin No. Pin Name
40 A-MUTE
41 POWER CONT
42 ST-BY MUTE
43 POWER MUTE
44 BEEP
45 DFP IN
46 DRF
47 WRQ
48 RWC
49 CD RES
50 OPEN
51 SW2
52 SW1
53 R-ENCOD2
54 R-ENCOD1
55 LCD-DI
56 REMOTE IN
57 LED
58 CD DISP SEL
59 CD CLOCK OUT
60 CD DATA OUT
61 CD CONNECT
62 CD INSIDE
63 TEST
64 L IND
65 PH. MUTE
66 RESET
67 ACC IN
68 SNS
69 BATT IN
70 IF (FM/AM)
71 E03
72 SUB PD
73 VDD
74 AM OSC
75 FM OSC
76 VSS
77 E02
78 E01
79 TEST1
80 XOUT
I/O
O Audio mute signal output.
O Power control signal output.
O ST-BY mute signal output.
O Power mute signal output.
O BEEP output (3kHz, 50ms).
I Front panel detection.
I "Detect RF" RF level detection input. Pulled up when not used.
I Sub-code Q output standby input terminal.
O Read/write control output terminal.
O DSP reset output terminal.
I Connected to a pull up resistor.
I 12 cm disc detection/12 cm disc ejection and detection.
I Leading motor start detection.
I Rotary encoder input 2.
I Rotary encoder input 1.
I LCD driver data signal input.
I Remote controller input. Pulled up when not used.
O Not used.
O Communication timing signal output to CD changer. "H": TX, "L": RX. (Not used.)
O Output synchronous clock signal for sending to CD changer. (Not used.)
O Output data signal for sending to CD changer. (Not used.)
I Connectivity check to CD changer. (Connected to ground through resistor.)
I Pick up inner track position detection.
I CD test mode. Pulled down when not used.
I Voltage input for level indicator. Pulled down when not used.
I External mute control. "L"= -20dB mute. Pulled up when not used.
I System reset. "L"= system reset.
I ACC (accessory power) ON/OFF input. OFF = Fault mode.
I Backup detection.
I Input battery ON/OFF.
I IF count signal input (FM/AM).
- Not used.
- Not used.
- Power supply.
I AM channel transmission input.
I FM channel transmission input.
- Connected to GND.
- Not used.
O Error out from change pump (for FM/AM).
- Not used.
O System clock oscillator output.
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Description