Read Sony CDP-XB740 / CDP-XB740E Service Manual online
24
• IC501 SYSTEM CONTROL (CXP82832-024Q) (PANEL BOARD)
Pin No.
Pin Name
I/O
Function
1
13G
O
FL grid signal output
2
14G
O
FL grid signal output
3
NC
–
Connected to VDD
4
+5V
–
Power supply (+5V)
5
SCOR
I
Sub code sync input
6, 7
GND
–
Ground
8
RMIN
I
Remote control signal input
9
GND
–
Ground
10, 11
X
–
Not used (Open)
12
LD OUT
O
Loading motor control
13
LD IN
O
Loading motor control
14
SENS
I
Sense signal input
15
XLT
O
Serial latch output
16
AMUTE
O
Audio mute output
17
PGML
O
Digital filter latch output
18
SENSOR. IN
–
Connected to VDD
19
BUSOUT
O
CONTROL-A1 transmission output
20
BUSIN
I
CONTROL-A1 receive input
21
SENSOR. SW
–
Not used (Open)
22
CLK
O
Serial clock output
23
LDON
O
Optical pick-up laser diode control output
24
DATA
O
Serial data output
25
SQCK
O
Subcode Q data readout clock output
26
SUBQ
I
Subcode Q data input
27
+5V
–
Power supply (+5V)
28
AVREF
I
Analog reference voltage input
29
KEY 0
I
Key input
30
KEY 1
I
Key input
31
KEY 2
I
Key input
32
FILTER. SW
–
Connected to ground
33
ADJ/AFADJ
I
Test mode terminal
34
LOADSW
O
Load in/out select control output
35
MODEL. SEL1
–
Model select pin (Connected to ground)
36
MODEL. SEL2
–
Model select pin (Connected to VDD)
37
AVSS
–
Analog ground
38
RST
I
Reset signal input
39
EXTAL
I
8 MHz clock input
40
XTAL
O
8 MHz clock output
• Abbreviation
FL : Fluorescent indicator tube
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