Sony HCD-VX550 / MHC-VX550 Service Manual ▷ View online
49
7-28.
IC PIN FUNCTION DESCRIPTION
Pin No.
Pin Name
I/O
Description
1
STK-MUTE
O
Power amplifier on/off selection signal output terminal “L”: standby mode, “H”: on
2
POWER
O
Power on/off control signal output for the audio system (+5V) and deck, panel, audio system
(+7V) “L”: standby mode, “H”: power on
(+7V) “L”: standby mode, “H”: power on
3
F-RELAY
O
Relay drive signal output for the speaker protect “H”: relay on
4
R-RELAY
O
Relay drive signal output for the speaker protect “H”: relay on Not used (open)
5
CD-POWER
O
Power on/off control signal output for the CD/video CD section
“L”: standby mode, “H”: power on
“L”: standby mode, “H”: power on
6
LINE-MUTE
O
Line muting on/off control signal output terminal “L”: muting on
7
DBFB-H/L
O
DBFB normal/high selection signal output to the M62493FP (IC101)
“L”: DBFB high, “H”: DBFB low
“L”: DBFB high, “H”: DBFB low
8
BYTE
I
External data bus line byte selection signal input terminal Fixed at “L” in this set
9
CNVSS
—
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 (IC502) “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
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 (+5V)
17
NMI
I
Non-maskable interrupt input terminal Fixed at “H” in this set
18
WAKE UP
I
Wakeup control signal input from the fluorescent indicator tube driver (IC601) “H” active
19
SCOR
I
Subcode sync (S0+S1) detection signal input terminal Not used (fixed at “L”)
20
RDS-INT
I
Serial data transfer clock signal input terminal Not used (fixed at “L”)
21
RDS-DATA
I
Serial data input terminal Not used (fixed at “L”)
22
AC-CUT
I
AC off detection signal input from the reset signal generator (IC502) “L”: AC cut checked
23
PL-CLK
O
Serial data transfer clock signal output to the pro-logic circuit Not used (open)
24
PL-DATA
O
Serial data output to the pro-logic circuit Not used (open)
25
PL-LAT
O
Serial data latch pulse output to the pro-logic circuit Not used (open)
26
TIMER LED
O
LED drive signal output of the TIMER SELECT indicator (D632) “H”: LED on
27
PROTECTOR
I
Protect on/off detection signal input from the speaker protect circuit
“L”: protect on, “H”: protect off
“L”: protect on, “H”: protect off
28
NCO
O
Not used (open)
29
IIC-CLK
I/O
Communication data reading clock signal input or transfer clock signal output with the CD
mechanism controller (IC502) and fluorescent indicator tube driver (IC601)
mechanism controller (IC502) and fluorescent indicator tube driver (IC601)
30
IIC-DATA
I/O
Communication data bus with the CD mechanism controller (IC502) and fluorescent indicator
tube driver (IC601)
tube driver (IC601)
31
NCO
O
Not used (open)
32
SQ-DATA
I
Subcode Q data input terminal Not used (fixed at “L”)
33
SQ-CLK
O
Subcode Q data reading clock signal output terminal Not used (open)
34
SW MODE
O
Not used (open)
35
CD-DATA
O
Serial data output terminal Not used (open)
36
RY-SW
I
Connection detect signal input of the headphone jack (J701)
“L”: no connected, “H”: headphone connected
“L”: no connected, “H”: headphone connected
37
CD-CLK
O
Serial data transfer clock signal output terminal Not used (open)
38
493-LATCH
O
Serial data latch pulse output to the M62493FP (IC101)
39
STBY LED
O
LED drive signal output of the I/u indicator (D754) “H”: LED on (standby mode)
MAIN BOARD IC105 M30622MA-A09FP (SYSTEM CONTROLLER)
50
Pin No.
Pin Name
I/O
Description
40
VC L+R/L–R
O
Virtual cinema L+R/L–R selection signal output to the LV1150 (IC1201)
41
VC BYPASS
O
Virtual cinema bypass control signal output terminal Not used (open)
42
FL SW
O
Filament on/off selection signal output for the fluorescent indicator tube
“L”: on, “H”: off Not used in this set
“L”: on, “H”: off Not used in this set
43
STBY RELAY
O
Main power on/off control signal output terminal “L”: standby mode, “H”: power on
Not used in this set
Not used in this set
44
BASS FREQ.
O
Sync bass frequency normal/high selection signal output to the M62493FP (IC101)
“L”: sync bass off (normal), “H”: sync bass high
“L”: sync bass off (normal), “H”: sync bass high
45, 46
NCO
O
Not used (open)
47
493-DATA
O
Serial data output to the M62493FP (IC101)
48
493-CLK
O
Serial data transfer clock signal output to the M62493FP (IC101)
49
ST-MUTE
O
Tuner muting control signal output to the FM/AM tuner unit “H”: muting on
50
STEREO
I
FM stereo detection signal input from the FM/AM tuner unit “L”: stereo
51
TUNED
I
Tuning detection signal input from the FM/AM tuner unit “L”: tuned
52
ST-CE
O
PLL chip enable signal output to the FM/AM tuner unit
53
ST-DOUT
O
PLL serial data output to the FM/AM tuner unit
54
ST-DIN
I
PLL serial data input from the FM/AM tuner unit
55
ST-CLK
O
PLL serial data transfer clock signal output to the FM/AM tuner unit
56
SENSE
I
Internal status detection monitor input terminal Not used (fixed at “L”)
57
HOLD
O
Laser power control signal output terminal Not used (open)
58
XLT
O
Serial data latch pulse output terminal Not used (open)
59
XRST
O
Reset signal output to the CD mechanism controller (IC502) “L”: reset
60
DISC-SENS
I
Disc status detection signal input from the disc sensor (IC703)
61
TBL-SENS
I
Disc tray status detection signal input from the disc tray sensor (IC702)
62
VCC
—
Power supply terminal (+5V)
63
TBL-L
O
Motor drive signal output to the disc tray turn motor driver (IC701) “L” active *1
64
VSS
—
Ground terminal
65
TBL-R
O
Motor drive signal output to the disc tray turn motor driver (IC701) “L” active *1
66
LOAD-OUT
O
Motor drive signal output to the disc tray slide motor driver (IC801) “H” active *2
67
LOAD-IN
O
Motor drive signal output to the disc tray slide motor driver (IC801) “H” active *2
68 to 70
ENC3 to ENC1
I
Detection signal input from the disc tray address detect rotary encoder (S811)
71
OUT-OPEN
I
Detection signal input from the disc tray open/close detect switch (S801)
“L”: open, “H”: close
“L”: open, “H”: close
72
B-TRG
O
Deck-B side trigger plunger drive signal output terminal “H”: plunger on
73
A-TRG
O
Deck-A side trigger plunger drive signal output terminal “H”: plunger on
74
CAPM-CNT2
O
Capstan motor (M1) drive signal output terminal “H” active *3
75
CAPM-CNT1
O
Capstan motor (M1) drive signal output terminal “H” active *3
*1 Disc tray turn motor (M701) control
*2 Disc tray slide motor (M801) control
Stop
Counter-
clockwise
Clockwise
Brake
Stop
Table In
Table Out
Brake
TBL-L (pin
^£
)
“H”
“L”
“H”
“L”
LOAD-OUT (pin
^§
)
“L”
“L”
“H”
“H”
TBL-R (pin
^∞
)
“H”
“H”
“L”
“L”
LOAD-IN (pin
^¶
)
“L”
“H”
“L”
“H”
Terminal
Mode
Terminal
Mode
*3 Capstan motor (M1) control
Stop
Forward
Direction
Reverse
Direction
Brake
CAPM-CNT1 (pin
&∞
)
“L”
“L”
“H”
“H”
CAPM-CNT2 (pin
&¢
)
“L”
“H”
“L”
“H”
Terminal
Mode
51
Pin No.
Pin Name
I/O
Description
76
CAP-M-H/L
O
High/normal speed selection signal output of the capstan motor (M1)
“L”: normal speed, “H”: high speed
“L”: normal speed, “H”: high speed
77
AMS-IN
I
Whether a music is present or not from HA12215F (IC301) is detected at automatic music sensor
“L”: music is present, “H”: music is not present
“L”: music is present, “H”: music is not present
78
TC-MUTE
O
Line muting on/off selection signal output to the HA12215F (IC301)
“L”: muting off, “H”: muting on
“L”: muting off, “H”: muting on
79
R/P-PASS
O
Recording/playback/pass selection signal output to the HA12215F (IC301)
“L”: recording mode, “H”: pass, “Hi-z”: playback mode
“L”: recording mode, “H”: pass, “Hi-z”: playback mode
80
NR-ON/OFF
O
Dolby NR on/off selection signal output to the HA12215F (IC301)
“L”: dolby off, “H”: dolby on
“L”: dolby off, “H”: dolby on
81
REC-MUTE
O
Recording muting on/off selection signal output to the HA12215F (IC301)
“L”: muting on, “H”: muting off
“L”: muting on, “H”: muting off
82
BIAS
O
Recording bias on/off selection signal output to the HA12215F (IC301)
“L”: bias off, “H”: bias on
“L”: bias off, “H”: bias on
83
EQ-H/N
O
Normal/high speed selection signal output to the HA12215F (IC301)
“L”: normal speed, “H”: high speed
“L”: normal speed, “H”: high speed
84
PB-A/B
O
Deck-A/B selection signal output to the HA12215F (IC301) “L”: deck-A, “H”: deck-B
85
ALC-ON/OFF
O
Automatic limiter control signal output to the HA12215F (IC301) “L”: limiter on
86
B-PLAY-SW
I
Detection input from the deck- B play detect switch (S1002) “H”: deck-B play
87
A-PLAY-SW
I
Detection input from the deck- A play detect switch (S1001) “H”: deck-A play
88
A-HALF
I
Detection input from the deck-A cassette detect switch (S1003)
“L”: cassette in, “H”: no cassette
“L”: cassette in, “H”: no cassette
89
B-HALF
I
Detection input from the deck-B half detect switch (S1006)
90
B-SHUT
I
Shut off detection signal input from the deck-B side reel pulse detector (IC1002)
91
A-SHUT
I
Shut off detection signal input from the deck-A side reel pulse detector (IC1001)
92
SOFT-TEST
O
Output terminal for the software test (open)
93
KEY/CD-ADJ
I
Setting terminal for the CD adjustment mode
94
KEY/CD-ADJ
I
Setting terminal for the CD adjustment mode
95
MODEL-IN
I
Destination setting terminal
96
AVSS
—
Ground terminal (for A/D conversion)
97
SPEC-IN
I
Setting terminal for the version
98
AVREF
I
Reference voltage (+5V) input terminal (for A/D conversion)
99
AVCC
—
Power supply terminal (+5V) (for A/D conversion)
100
TC-RELAY
O
Recording/playback select signal output to the REC/PB switch (IC602)
“L”: playback, “H”: recording
“L”: playback, “H”: recording
52
Pin No.
Pin Name
I/O
Description
1
SENSE
I
Internal status (SENSE) signal input from the CXD3008Q (IC101)
2
SENSE CLK
O
Sense serial data reading clock signal output to the CXD3008Q (IC101)
3
DSP DATA
O
Serial data output to the CXD3008Q (IC101)
4
DSP LATCH
O
Serial data latch pulse output to the CXD3008Q (IC101)
5
DSP CLK
O
Serial data transfer clock signal output to the CXD3008Q (IC101)
6 LD ON O
Laser power selection signal output to the CXA2568M (IC103) “H”: laser on
7
REMOTE IN
I
Remote control signal input terminal Not used (open)
8
BYTE
I
External data bus line byte selection signal input “L”: 16 bit, “H”: 8 bit (fixed at “L”)
9
CN VSS
Ground terminal
10
DSP MUTE
O
Muting on/off control signal output to the CXD3008Q (IC101) “H”: muting on
11
CTRL1
O
Clock selection signal output to the CXD3008Q (IC101)
“L”: 16.9344 MHz (double speed), “H”: 33.8688 MHz
“L”: 16.9344 MHz (double speed), “H”: 33.8688 MHz
12
XRESET
I
Reset signal input from the system controller (IC501) “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 (10 MHz)
14
VSS
—
Ground terminal
15
XIN
I
Main system clock input terminal (10 MHz)
16
VCC
—
Power supply terminal (+5V)
17
NMI
I
Non-maskable interrupt input terminal (fixed at “H” in this set)
18
SCOR
I
Subcode sync (S0+S1) detection signal input from the CXD3008Q (IC101)
19
AGC HOLD signal output.
20 8830 HINT
Interrupt request signal input from the MPEG video/audio decoder (IC506)
21
NTSC/PAL select signal output.
22
DF LATCH
O
Serial data latch pulse output to the D/A converter (IC509) “L” active
23
Not used.
24
8830 RESET
Reset signal output to the MPEG video/audio decoder (IC506) “L”: reset
25
JOG1
I
Rotary encoder jog dial pulse input terminal Not used (fixed at “H”)
26
JOG2
I
Rotary encoder jog dial pulse input terminal Not used (fixed at “H”)
27
28
Chip select signal of D/A converter (IC511).
29
30
I
2
C and serial data input from CD mechanism control (IC501).
I
2
C and serial data output from CD mechanism control (IC501).
31
Serial data output to the MPEG video/audio decoder (IC505) and D/A converter (IC509)
32
Serial data input from the MPEG video/audio decoder (IC505)
33
Serial data transfer clock signal output to the MPEG video/audio decoder (IC505) and D/A
converter (IC509)
converter (IC509)
34
RTS signal to serial port (check connector).
35
NC
RTS1
S-CLK
S-DATA I
S-DATA O
I2C/TX
I2C/RX
OSD CS
VMUTE
O
O
O
O
O
O
Not used (open)
36
SUBQ DATA
I
Sub-code Q data input from the CXD3008Q (IC101)
37
SUBQ CLK
O
Sub-code Q data reading clock signal output to the CXD3008Q (IC101)
38
P.ON
O
Power on/off control signal output terminal Not used (open)
39
BUS XRDY
I
Ready signal input terminal Not used (fixed at “H”)
40
BUS
O
Not used (open)
41
BUS XHOLD
I
Hold signal input terminal Not used (fixed at “H”)
—
O
O
O
I
I
I/O
I/O
CTRL2
NT/PAL OUT
NC
—
Video muting on/off control signal output terminal “L”: muting on
VIDEO BOARD IC505 M30624MG-A05FP (CD MECHANISM CONTROLLER)
Click on the first or last page to see other HCD-VX550 / MHC-VX550 service manuals if exist.