Read Sony ICD-MS1 Service Manual online
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Pin No.
Pin Name
I/O
Description
157
PF1
O
Not used (open)
158
PF2
O
Not used (open)
159
SYNC
O
FS sync signal output to the ADPCM (IC164)
160
LIGHT
O
LED drive signal output terminal of the liquid crystal display module (LCD720) back light
indicator (D720) “H”: LED on
indicator (D720) “H”: LED on
161
VCC
—
Power supply terminal (+3.3V)
162
PF6
O
Not used (open)
163
PF7
O
Not used (open)
164
VSS
—
Ground terminal
165
AVSS
—
Ground terminal (for A/D converter)
166
XHOLD
I
HOLD switch (S761) input terminal “L”: HOLD on, “H”: HOLD off
167 to 170
KEYIN3 to
KEYIN0
I
Key return signal input from the key matrix “L” input when key pressing
171
VORSW
I
VOR switch (S764) input terminal “L”: VOR on, “H”: VOR off
172
SPEED
I
PLAY SPEED select switch (S763) input terminal (A/D input)
“L”: SLOW, “M”: FAST, “H”: NORMAL
“L”: SLOW, “M”: FAST, “H”: NORMAL
173
BATT
I
Dry battery power supply voltage detection signal input terminal (A/D input)
174
TEST1
I
Setting terminal for the test mode Not used (fixed at “H”)
175
TEST2
I
Setting terminal for the test mode “L”: test mode (normally: fixed at “H”)
176
AVCC
—
Power supply terminal (+3.3V) (for A/D converter)
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