Sony XR-M510 Service Manual page 40

XR-M510
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Pin No. Pin Name
77 BU-IN
78 NC
79 KEYACK
80 AD ON
81 ACCIN
82
FLS PWON
83 PW-ON
84 TESTIN
85 RAMBU
86 HSTX
87 MD2
88 MD1
89 MD0
TE
L 13942296513
90 RST
91 VSS
92 X0
93 X1
94 VCC
95 ILLIN
96 I-DET
97 MOT–
98 MOT+
99 CLOSE SW
100 OPEN SW
101 to 103
NC
DSTSEL1,
104, 105
DSTSEL2
106 BOOT
107 DSP GAIN
108 DSP ON
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109 NC
110
EMPH-IN
.
111 PACK SW
112 4V SEL
113 P SEL
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I/O
Battery detection signal input from the SONY bus interface (IC501) and battery detect circuit
I
"L" is input at low voltage
O
Not used (open)
Input of acknowledge signal for the key entry Acknowledge signal is input to accept function
I
and eject keys in the power off status On at input of "H"
A/D converter power control signal output terminal
O
When the KEYACK (pin ul) that controls reference voltage power for key A/D conversion input
is active, "L" is output from this terminal to enable the input
I Accessory detection signal input terminal "L": accessory on
Power on/off control signal output of the illumination LED and liquid crystal display driver
O
(IC901, 902) "H": power on
O Main system power supply on/off control signal output terminal "H": power on
I Setting terminal for the test mode "L": test mode, Normally: fixed at "H"
Internal RAM reset detection signal input from the RN5VD33AA (IC603)
I
Input terminal to check that RAM data are not destroyed due to low voltage
This checking is made within 100 msec after reset
I
Hardware standby input terminal "L": hardware standby mode Reset signal input in this set
I
Setting terminal for the CPU operational mode (fixed at "L" in this set)
I
Setting terminal for the CPU operational mode (fixed at "H" in this set)
I Setting terminal for the CPU operational mode (fixed at "H" in this set)
System reset signal input from the reset signal generator (IC602) and reset switch (S901, 902)
I
"L": reset "L" is input for several 100 msec after power on, then it changes to "H"
—
Ground terminal
I Main system clock input terminal (3.68 MHz)
O Main system clock output terminal (3.68 MHz)
— Power supply terminal (+5V)
Auto dimmer control illumination line detection signal input terminal
I
"L" is input at dimmer detection
Detection signal input from the motor overload detection circuit for the front panel open/close
I motor (M601)
"L" is input when the motor current exceeds the specified value
Front panel open/close motor (M601) drive signal (in panel close direction) output to the
O
BA6288FS (IC502) "H" active *2
Front panel open/close motor (M601) drive signal (in panel open direction) output to the
O
BA6288FS (IC502) "H" active *2
I Front panel open/close detect switch input terminal "L" is input when the front panel is closed
I Front panel open/close detect switch input terminal "L" is input when the front panel is opened
I Not used (fixed at "H")
I
Destination setting terminal (A/D input) *3
O Serial data output to the liquid crystal display drive controller (IC607)
O Not used (open)
O Power supply on/off control signal output terminal "H": DSP on Not used (open)
O
Not used (open)
x ao
y
I Emphasis control signal input terminal Not used (fixed at "L")
i
I Cassette in/out detect switch (S901) "L": cassette in
Input terminal of whether line driver is mounted or not is detected
I
"H": line driver is not mounted
I Power select input terminal Not used (fixed at "L")
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Description
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