Sony WM-FX855 Service Manual page 22

Pin No. Pin Name I/O
47 BEEP O
48 HOLDER I
49 NC —
50 WAKE UP I
51 NC —
52 DDC (TC) CTL O
53 MUTE CTL O
54 TC DATA O
55 TC CLK O
56 NC —
57 AVSS —
58 NC —
59 AVR I
60 F/R SW I
61 KEY IN I
62-64 NC —
Output of beep sound (f=1.6 kHz)
Input of cassette cover open/close switch " L ": Close, " H ": Open
Not used for this set (Open)
Input of interrupt signal for STOP mode cancel
Not used for this set (Open)
Output of DC-DC converter ON/OFF control signal " L ": ON
Output of audio MUTE control signal " L ": MUTE ON
Output of communication data to µPD17073
Output of communication clock to µ PD17073
Not used for this set (Open)
Ground terminal (A/D converter)
Not used for this set (Open)
Input of A/D converter reference voltage
Input of mechanism deck mode switch (A/D input) " L ": FWD, VDD/2: REV
Key input terminal (A/D input)
Not used for this set (Open)
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Function