Sony MDS-JA20ES Service Manual page 72

Pin No. Pin Name
85 COAX/XOPT
86 OPT2/XOPT1
87 DALATCH
88 DARST
89
LED0
90 LED1
91
TIMER
92
SOURCE
93 KEY3
94
KEY2
95
KEY1
96 AVSS
97
KEY0
98 VREF
99 +3.3V
100
MONO/ST
I/O
Optical in 1/2 or coaxial in selection signal output to the digital input selector (IC300)
O
"L": OPT 1/2, "H": COAXIAL
Optical in 1 or optical in 2 selection signal output to the digital input selector (IC300)
O
"L": OPT 1, "H": OPT 2
O Serial data latch pulse signal output to the D/A converter (IC200)
O Reset signal output to the A/D converter (IC100) and D/A converter (IC200) "L": reset
O LED drive signal output of the P (PAUSE) LED (D754) "L": LED on
O
LED drive signal output of the r REC LED (D755) "L": LED on
TIMER switch (S751) input terminal (A/D input)
I
"L": PLAY, "H": REC (OFF: center voltage)
I INPUT switch (S741) input terminal (A/D input)
Key input terminal (A/D input) S731 to S734 (TIME, FADER, FILTER, MEGA CONTROL
I
keys input)
Key input terminal (A/D input) S722 to S726 (PLAY/MODE, REPEAT, SCROLL/CLOCK
I
SET, DISPLAY/CHAR, I/u keys input)
Key input terminal (A/D input) S711 to S714 and S716 (MENU/NO, YES, PUSH ENTER,
I
CLEAR, § OPEN/CLOSE keys input)
— Ground terminal
I Key input terminal (A/D input) S701 to S706 (r REC, p, ), 0, P, ( keys input)
I Reference voltage (+3.3V) input terminal (for A/D converter)
— Power supply terminal (+3.3V) (for analog system )
I
Recording mode switch input terminal "L": mono, "H": stereo Not used (fixed at "H")
Function
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