Sony XR-C440, Руководство по обслуживанию

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45 ILLON O Illumination power supply control pin
At PW SEL on: ACC on: “H”
At PW SEL off: Power on: “H”
46 BEEP O Beep sound output pin
47 MUT O System mutig control pin. At muting: “H”
48 VOLCE O Chip enable output pin to electrical volume
49 SUBCE O Chip enable output pin to sub volume (not used)
50 VOLCKO O Clock output pin to electrical volume
51 SUBCKO O Clock output pin to sub volume (not used)
52 VOLSO O Data output pin to electrical volume
53 TAPMUT O Tape mutig control pin. At muting: “H”
54 DOLON I/O DOLBY control input/output pin
At initial mode: valid/invalid selection input of DOLBY function
At normal mode: DOLBY on/off output
55 DOLBC I/O DOLBY B/C selection pin
At initial mode: valid/invalid selection input of DOLBY C function
At normal mode: DOLBY B/C selection output. “L”: DOLBY B, “H”: DOLBY C
56 AMSIN I Tape music with/without detection pin. “L”: with music
57 MTLSEL I/O METAL control input/output pin
At initial mode: auto/manual serection input of METAL function. “L”: manual
At manual mode: METAL on/off output. “H”: on
At auto mode: input st 30 MTLIN
58 AD_ON O Power supply control pin for A/D conversion
59 RAMBU I Reset detection pin of RAM
60 RESET I Reset input pin
61 SIRCS I SIRCS signal input pin
62 BU_IN I Buck up power supply detection pin
63 PW_SEL I Power select switch input pin
64 ACCIN I Accessory voltage detection pin
65 NOSESW I Front panel removal or attaching detection pin
66 TELMUT I Telephone muting detection pin. “L”: 20dB audio muting
67 KEYACK O Key acknowledge signal input pin
68 VDD — Power supply
69 OSCOUT O Main system clock output pin (5MHz)
70 OSCIN I Main system clock input pin (5MHz)
71 GND — GND
72 XT_OUT O Sub system clock output pin (32.768kHz)
73 XT_IN I Sub system clock input pin (32.768kHz)
74 AVDD — Power supply
75 AVREF0 I A/D reference voltage input pin
76, 77 KEYIN0, KEYIN1 I Key input pin (A/D input)
78 D.POSI I D-BASS switch input pin (A/D input)
79 VSM I FM/AM signal meter voltage detection pin (A/D input)
80 KEYSEL I Key function setting pin
Pin No. Pin Name I/O Function