Sony WX-7700MDX, Руководство по обслуживанию

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72
WX-7700MDX
Pin No. Pin Name I/O Description
33 VSS — Ground terminal
34 C —
Connected to coupling capacitor for the power supply
35 CD XRST
O System reset signal output to the uPD63711GC “L”: reset
36 CD A0
O
Command/parameter recognition selection signal output to the uPD63711GC
“L”: command transmission, “H”: parameter transmission
37 CD STB
O Data strobe signal output to the uPD63711GC
38 DVCC —
Power supply terminal (+5V) (for D/A converter)
39 DVSS — Ground terminal (for D/A converter)
40 FP CTRL
O Front panel open/close motor speed control signal output to the BA6288FS
41 CD TSTB
O CD text parameter strobe signal output to the uPD63711GC
42 AVCC — Power supply terminal (+5V) (for A/D converter)
43 AVRH
I Reference voltage (+5V) input terminal (for A/D converter)
44 AVRL
I Reference voltage (0V) input terminal (for A/D converter)
45 AVSS — Ground terminal (for A/D converter)
46, 47
KEYIN0,
KEYIN1
I Key input terminal (A/D input)
48 NCO O
Not used
49 CD ON O Power on/off control signal output for the CD mechanism deck section “L”: power on
50 to 52 NCO O
Not used
53
VSM I S meter voltage detect signal input from the tuner unit (A/D input)
54 VCC — Power supply terminal (+5V)
55 CDM ON
O Power on/off control signal output for the CD mechanism deck section “H”: power on
56 CD XTALEN
O Not used
57 CD LM LO
O
CD loading motor control signal (loading direction) output to the BA5810FP on the CD
mechanism deck section “H” active *1
58 CD LM EJ O
CD loading motor control signal (eject direction) output to the BA5810FP on the CD mechanism
deck section “H” active *1
59 CD RFOK
I RFOK signal input from the uPD63711GC
60 CD PH1 I
Detection input terminal from the disc in detect sensor on the CD mechanism deck section
“L” is input when disc is loaded in
61 CD PH3 I
Detection input terminal from the loding completion detect sensor on the CD mechanism deck
section “L” is input after disc is loaded completely
62 CD DSW I
Detection input terminal from the disc set detect switch on the CD mechanism deck section
“L” is input when disc is loaded and chuked
63
VSS — Ground terminal
64 CD PACK
I CD text pack synchronized signal input from the uPD63711GC
65 FSW IN
I Oscillation frequency input for measure against AM beat
66
CD PH2 I
Detection input terminal from the CD disc size (8cm/12cm) detect sensor on the CD mechanism
deck section “L”: 8cm, “H”: 12cm
67 CD SELFSW I
Detection input terminal from the disc self store detect switch on the CD mechanism deck section
“L” is input when disc is loaded in
68
CD LIMIT I
CD sled limit in detect switch input terminal
“L”: When the optical pick-up is inner position
69
FLASH W I
Detect signal Input terminal when writing into flash memory data
“L” is input when writing mode Not used
70
I2CSIO I/O IIC two-way data bus with the tuner unit and TDA7402TR
71 I2CCKO O IIC bus clock signal output to the tuner unit and TDA7402TR