Service manual

60
Pin No. Pin Name I/O Description
78 LDIN O
Motor control signal output to the loading motor driver (IC400) “L” active *1
79 LDOUT
O Motor control signal output to the loading motor driver (IC400) “L” active *1
80 LD-LOW
O
Loading motor drive voltage control signal output for the loading motor driver (IC400)
“H” active
81
NC I Not used (fixed at “L”)
82
A1OUT O Sircs remote control signal output of the CONTROL A1 II
83 MUTE O
Audio line muting on/off control signal output terminal “L”: line muting on
84 STB O
Strobe signal output to the power supply circuit “L”: standby mode, “H”: power on
85 COAX/XOPT O
Optical in 1/2 or coaxial in selection signal output to the digital input selector (IC300)
“L”: OPT 1/2, “H”: COAXIAL
86 OPT2/XOPT1 O
Optical in 1 or optical in 2 selection signal output to the digital input selector (IC300)
“L”: OPT 1, “H”: OPT 2
87 DALATCH
O Serial data latch pulse signal output to the D/A converter (IC200)
88 DARST O
Reset signal output to the A/D converter (IC100) and D/A converter (IC200) “L”: reset
89
LED0 O LED drive signal output terminal Not used (pull down)
90 LED1 O
LED drive signal output terminal Not used (pull down)
91
TIMER I
TIMER switch (S751) input terminal (A/D input)
“L”: PLAY, “H”: REC (OFF: center voltage)
92
SOURCE I INPUT switch (S741) input terminal (A/D input)
93
KEY3 I Key input terminal (A/D input) S731 (PITCH CONTROL key input)
94
KEY2 I
Key input terminal (A/D input) S721 to S724, S732 and S733 (DISPLAY/CHAR, SCROLL,
PLAY MODE, I/u, FILTER, TIME keys input)
95
KEY1 I
Key input terminal (A/D input) S711 to S714 and S716 (MENU/NO, YES, PUSH ENTER,
EJECT § keys input)
96 AVSS
— Ground terminal
97
KEY0 I
Key input terminal (A/D input) S701 to S706 (REC r, p, ), 0, P, · keys input)
98 VREF I Reference voltage (+3.3V) input terminal (for A/D converter)
99 +3.3V
— Power supply terminal (+3.3V) (for analog system )
100
MONO/ST
I
REC MODE switch (S746) input terminal “L”: MONO, “H”: STEREO
*1 Loading motor (M103) control
Mode
Terminal
LDIN (pin &•)
“L” “H” “L” “H”
LDOUT (pin &ª)
“H” “L” “L” “H”
LOADING EJECT BRAKE RUN IDLE