Read Sony HCD-GX20 / MHC-GX20 Service Manual online
37
HCD-GX20
Pin No.
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
I/O
I
I
I
I
I
I
O
O
O
O
–
–
O
O
O
O
O
I
O
O
I
O
Pin Name
TUNER STEREO
CD OPEN
TAPE PHOTO A
TAPE PHOTO B
TAPE AMS
PROTECTOR SENSOR
PT8300 LATCH
CD LED
TUNER LED
TAPE LED
VSS
VDD
GAME LED
GAME MIX LED
LC72131 CE
BD3871 DATA/LATCH
LC72131,PT8300
DATA OUT
LC72131 DATA IN
LC72131,BD3871,
PT8300 CLK
LA9241M,LC78622NE
COIN
LA9241M,LC78622NE
SQOUT
LA9241M,LC78622NE
SQCK
Description
Stereo tuning signal input
CD tray open switch signal input
A deck photo sensor singanl input
B deck photo sensor singanl input
AMS signal input
Power amplifier circuit protection signal input
Latch signal output to the I/O expander
CD LED control signal output
TUNER LED control signal output
TAPE LED control signal output
Ground
Power supply
GAME LED control signal output
GAME MIX LED control signal output
Chip select signal output to the PLL tuner IC
Data/latch signal output to the sound processor
Data output to the PLL tuner IC and the I/O expander
Data input from the the PLL tuner IC
Clock output to the PLL tuner IC, the sound processor and the I/O expander
CD command data signal output
CD subcode Q signal input
CD command clock signal output
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