Read Sony HCD-VM330AV Service Manual online
62
HCD-VM330AV
•
MAIN BOARD IC801 M30622MGA-A57FP (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
NC
—
Not used (open)
2
LOAD POS
O
Loading motor drive signal (load-out direction) output the motor driver (IC881)
3
LOAD NEG
O
Loading motor drive signal (load-in direction) output the motor driver (IC881)
4
RMC
I
Remote control signal input from the remote control receiver (IC702)
5
TABLE POS
O
Table motor drive signal (counterclockwise) output to the motor driver (IC881)
6
LOAD IN SW
I
Load in/out detect switch (S842) input “L”: load in
7
LOAD OUT SW
I
Load in/out detect switch (S842) input “L”: load out
8
—
—
Not used (fixed at “L”)
9
CNVSS
—
Not used
10
SUBXIN
I
Sub system clock input terminal (32.768 kHz)
11
SUBXOUT
O
Sub system clock output terminal (32.768 kHz)
12
RESET
I
System reset signal input from the reset signal generator (IC802) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
13
XOUT
O
Main system clock output terminal (16 MHz)
14
VSS
—
Ground terminal
15
XIN
I
Main system clock input terminal (16 MHz)
16
VCC
—
Power supply terminal (+5V)
17
NC
—
Not used (fixed at “H”)
18
T-SENS2
I
Table position sensor (IC13) input terminal
19
C-SCOR
I
Subcode sync (S0+S1) detection signal input terminal Not used (open)
20
KB-SCL
O
Serial data transfer clock signal output to the KEYBOARD (J801)
21
C-MUTE
O
Muting on/off control signal output terminal “H”: muting (center speaker)
22
PWM1
O
Focus servo drive PWM signal output terminal Not used (open)
23
R-MUTE
O
Muting on/off control signal output terminal “H”: muting (rear speakers)
24
PWM2
O
PWM signal output terminal Not used (open)
25
PL-RQ
O
Serial data latch pulse output to the M62464FP (IC301)
26
PWM3
O
RFDC PWM signal output terminal Not used (open)
27
PL-DATA
O
Serial data output to the M62464FP (IC301)
28
PL-CLK
O
Serial data transfer clock signal output to the M62464FP (IC301)
29
IIC CLK
I/O
Communication data reading clock signal input or transfer clock signal output with the video CD
controller (IC502) and display controller (IC701)
controller (IC502) and display controller (IC701)
30
IIC DATA
I/O
Communication data bus with the video CD controller (IC502) and display controller (IC701)
31
NC
—
Not used
32
C-SQSO
I
Subcode Q data input terminal Not used
33
C-SQCK
O
Subcode Q data reading clock signal output terminal Not used
34
FRONT
O
Selection signal output of the rear speaker output signal to the BU4066BC (IC307)
“H”: Same the front channel
“H”: Same the front channel
35
REAR
O
Selection signal output of the rear speaker output signal to the BU4066BC (IC307)
“H”: Rear channel
“H”: Rear channel
36
KB-SDA
I
Keyboard data input from the KEYBOARD (J801)
37
KB-CTRL
O
Keyboard control signal output to the KEYBOARD (J801)
38
S/W-MUTE
O
Muting on/off control signal output terminal “H”: muting (super woofer)
39
NC
—
Not used (open)
40
R-RELAY
O
Relay drive signal output for the surround speaker (rear and center) protection “H”: on
41
NC
—
Not used (fixed at “L”)
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