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Sony CDX-3250 Service Manual page 3

Fm/mw/lw compact disc player
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Pin No.
Pin Name
59
EZ-SEL
60
SENS
61
FOK
62
LD-ON
63
NC
64
ST/MONO
65
LCD-CKO
66
LCD-SO
67
C.ALARM
68
SQ-CKO
69
CD-RST
70
SQ-SI
71
CD-SO
72
CD-LAT
73
CD-CKO
74
VREF
75
GND1
76
X-OUT
77
X-IN
78
BU-IN
79
VDD1
80
RESET
I/O
I
SHIFT + input
I
Information input from servo IC.
I
Focus OK input
O
Laser diode control
Not used. (Connect to GND.)
I/O
Used for both STEREO indicator display input and force MONO output. (FM)
O
LCD driver serial clock output
O
LCD driver serial data output
O
Caution alarm output
O
Q data read serial clock output
O
Servo IC/DAC reset output
I
Q data input
O
Serial data output to servo IC.
O
Data latch output to servo IC.
O
Serial clock output to servo IC.
Not used.
Ground
Crystal oscillator connection (4.5 MHz)
I
Crystal oscillator connection (4.5 MHz)
I
Back-up detection
Power supply (+5 V)
I
RESET input
– 20 –
Pin Description

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Cdx-4280