Yamaha GX-700 Service Manual page 32

GX-700/GX-700VCD
IC8 : M38199EF [P.C.B. INPUT]
µ
8 bit -COM (SYSTEM CPU)
No. Port
28 P46 MDRES
29 INT1
30 INT4
INT3
31
32 INT2
33 P41
34 INT0
35 /RESET
36 XCIN
XCOUT
37 XCOUT
38 XIN
39 XOUT
40 VSS
41 P27
42 P26
43 P25
44 P24 SPESEL
45 P23
46 P22 KALATCH
47 P21
48 P20
49 P17
P16
50
51 P15 TMLED
52 P14
53 P13
54 P12
55 P11
56 P10
57 P07
58 P06
59 P05 /SMUTE
60 P04
61 P03
62 P02
63 P01
64 P00
65 P37
66 P36
67 P35
68 P34
69 P33
70 P32
71 P31 PBMUTE
72 P30 RMUTE
73 P97
74 P96
75 P95 DOLBY
76 P94
77 P93
78 P92
79 P91 CLOSE
80 P90
81 P87
P86
82
83 P85
84 P84
31
Name I/O
O MD RESET
ACIN I POWER DOWN AC PULSE IN
MD POWER DOWN
PDN O
OPEN
REMO I REMOTE CONTROL SIGNAL IN
STEIN I TUNER STEREO/MONO DETECT
OPEN
RESET I RESET
I 32.768 kHz IN (SUB CLOCK)
XCIN
O 32.768 kHz OUT (SUB CLOCK)
XIN I 8 MHz IN (MAIN CLOCK)
XOUT O 8 MHz OUT (MAIN CLOCK)
GND O GND
SPEA O SPECTRUM ANALYZER (BA3835F) A OUT
O SPECTRUM ANALYZER (BA3835F) B OUT
SPEB
SPECTRUM ANALYZER (BA3835F) C OUT
SPEC O
O SPECTRUM ANALYZER (BA3835F) SEL OUT
DLCE O LA2787/LV1017 CE
O KARAOKE IC M65853 LATCH
FLRES O FL DRIVER RESET
O FL DRIVER CE
FLCE
LC72131/LC72720/LC75393 CE
TUCE O
STLED O STANDBY LED ON
O TIMER LED ON
/BC O PRO LOGIC IC CONTROL-BC
TEST0 O TEST PORT
O TEST PORT
TEST1
MD DIGITAL INPUT SELECT
DSEL0 O
MD DIGITAL INPUT SELECT
DSEL1 O
PRON O POWER RELAY CONTROL
SRON O SPEAKER RELAY CONTROL
O SUB WOOFER MUTE
/A O PRO LOGIC IC CONTROL-A
Y MERSION ON
/YMA O
4052 INPUT SELECT
IN1B O
IN1A O 4052 INPUT SELECT
IN2A O 4052 INPUT SELECT
IN2B O 4052 INPUT SELECT
RECA O 4066 CONTROL
RECB O 4066 CONTROL
LA7956 INPUT SELECT
VSEL0 O
VSEL1 O LA7956 INPUT SELECT
VCR O VCR REC INHIBIT
O DECK PLAYBACK MUTE
O DECK REC MUTE
REC O DECK AMP REC
DECK BIAS ON
BIAS O
O DOLBY ON
TPEQ O TAPE EQUALIZER SELECT
SOL O DECK SOLENOID ON
CPM O DECK CAPSTAN MOTOR ON
O TAPE LOADING MOTOR CLOSE
TAPE LOADING MOTOR OPEN
OPEN O
VR ENCODER A
ENVA I
ENVB I VR ENCODER B
ENMA I MD ENCODER A
ENMB I MD ENCODER B
Function
[ H : LED ON ]
[ H : LED ON ]
[ H : ON ]
[ H : ON ]
[ L : MUTE ON ]
[ H : ON ]
[ L : ON ]
[ H : INHIBIT]
[ H : 120 µ]