Yamaha GX-700 Service Manual page 33

IC8 : M38199EF [P.C.B. INPUT]
µ
8 bit -COM (SYSTEM CPU)
No. Port Name
85 P83 /HP
86 P82 MIC
87 CASS
P81
88 PLSW
P80
89 PA7 CRO2
90 PA6 /IPRT
91 VCC +5V
92 PA5 CLSW
93 PA4 RECINHF
94 RECINHR
PA3
95 PA2 OPSW
96 PA1 REEL
97 PA0 MUSIC
98 VEE VEE
99 AVSS AVSS
100 VREF
VREF
I/O
I HEAD PHONE DETECT
I MIC DETECT
I
CASSETTE IN DETECT
I
DECK MECHA PLAY POSITION DETECT
CrO2 (70 µs) POSITION DETECT
I
I AMP OVER CURRENT DC VOLTAGE DETECT
+5V
I DECK CLOSE SW
I REC INHIBIT FORWARD (SIDE-A)
I
REC INHIBIT REVERSE (SIDE-B)
I DECK OPEN SW
I REEL MOTOR PULSE DETECT
I TAPE MUSIC SENSOR
GND
GND
+5V
GX-700/GX-700VCD
Function
[L : HP DETECT]
[L : ABNORMAL DETECT]
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