Sony HCD-EP505 Service Manual page 35

Pin No. Pin Name
78
VSS
79
X2
80
X1
81
VDD
82
XT1
83
XT2
84
RESET
85 REMOTE
86
PWRFAIL
87 RDSCLK
88
CDCLK
89
SENSORB
90 SENSORA
91 CD DOOR SW
92
CD-EN
93
SOL
94 TU-EN
95 MOTOR-ON
96 AMS
97 ENCODERA
98 ENCODERB
99 AVSS
100 KEY1
I/O
— Ground terminal
O Main system clock output terminal (4.194304 MHz)
I Main system clock input terminal (4.194304 MHz)
— Power supply terminal
I Sub system clock input terminal (32.768 kHz) Not used
O Sub system clock output terminal (32.768 kHz) Not used
System reset signal input from the reset signal generator "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
I Remote control signal input from the remote control receiver
I Power failure detection signal input terminal "L": power failure, "H": power on
Serial data transfer clock signal input from the RDS decoder
I
(Used for the AEP, UK models)
I Serial data transfer clock signal input from the CD block
I Tape sensor input terminal Not used
I Tape play/rec detect sensor input terminal "L" input when the tape play/rec detect
I
CD lid open/close detect switch (SW300) input terminal "L": CD lid is closed
O CD power on/off control signal output terminal
O Trigger plunger drive signal output terminal "H": trigger plunger on
O Tuner power on/off control signal output terminal
O Motor control signal output terminal
Whether a music is present or not from AMS is detected at auto music sensor
I
"L": music is not present, "H": music is present
I Jog dial pulse input from the rotary encoder (VOLUME) (A phase input)
I Jog dial pulse input from the rotary encoder (VOLUME) (B phase input)
— Ground terminal
I Key input terminal (A/D input)
Description
HCD-EP505
Ver 1.1
35