![background image](http://html.mh-extra.com/html/sony/hcd-rv7/hcd-rv7_service-manual_420869061.webp)
61
HCD-RV7/RV8
•
MAIN BOARD IC501 M30620MCN-A05FP (SYSTEM CONTROLLER (CD MECHANISM CONTROL))
Pin No.
Pin Name
I/O
Description
1
NO-USE
—
Not used
2
STEREO
I
FM stereo detection signal input from the tuner unit “L”: stereo
3
TUNED
I
Tuning detection signal input from the tuner unit “L”: tuned
4
SIRCS
I
Remote control signal input
5 to 7
SUR1 to SUR3
O
Control signal output to the surround signal processor
8, 9
GND
—
Ground terminal
10
XC-IN
I
Sub system clock input terminal (32.768 kHz)
11
XC-OUT
O
Sub system clock output terminal (32.768 kHz)
12
RESET
I
System reset signal input from the reset signal generator “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
13
X-OUT
O
Main system clock output terminal (16 MHz)
14
VSS
—
Ground terminal
15
X-IN
I
Main system clock input terminal (16 MHz)
16
VCC
—
Power supply terminal (+3.3V)
17
NMI
I
Non-maskable interrupt input terminal
18
NO-USE
I
Not used
19
SYSCS
I
Chip select signal input from the MPEG audio/video decoder
20
AC-CUT
I
AC off detection signal input from the reset signal generator “L”: AC cut checked
21
ST-MUTE
O
Tuner muting on/off control signal output “H”: muting on
22
ST-CE
O
PLL chip enable signal output to the tuner unit
23
ST-DOUT
O
PLL serial data output to the tuner unit
24
BU-PWM3
O
PWM signal output to terminal Not used
25
ST-DIN
I
PLL serial data input from the tuner unit
26
BU-PWM2
O
PWM signal output to terminal Not used
27
ST-CLK
O
PLL serial data transfer clock signal output to the tuner unit
28
BU-PWM1
O
PWM signal output to terminal Not used
29
IIC-CLK
I/O
Communication data reading clock signal input or transfer clock signal output with the fluorescent
indicator tube driver
30
IIC-DATA
I/O
Communication data bus with the fluorescent indicator tube driver
31
TXD1
O
Not used
32
SYSOK
O
Acknowledge signal output to the MPEG audio/video decoder
O
Video muting on/off control signal output to the video amplifier “H”: muting on
I
Not used
O
Serial data output to the MPEG audio/video decoder
I
Serial data input from the MPEG audio/video decoder
I
Serial data transfer clock signal input from the MPEG audio/video decoder
O
Power on/off control signal output for the CD/video CD section “H”: power on
O
Clock (32.768 kHz) signal output terminal (for test mode)
O
Request signal output to the MPEG audio/video decoder
I
Reset signal output to the fluorescent indicator tube driver “L”: reset
42
NO-USE
I
Not used
43
SYSRST
O
Reset signal output to the motor/coil driver, MPEG audio/video decoder and D/A converter
“L”: reset
44
LOAD-IN
O
Turn motor drive signal output
45
LOAD-OUT
O
Turn motor drive signal output
46
OPEN-SW
I
Disc tray open detection signal input “L”: disc tray open
47
CLOSE-SW
I
Disc tray close detection signal input “L”: disc tray close
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299