Sony MDX-CA790X Service Manual ▷ View online
37
MDX-CA790X
•
SERVO BOARD IC7 MB90473PFV-G-150-BNDE1 (MD MECHANISM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
MDMON
O
Power supply on/off control signal output of the MD mechanism deck section
2
LINKOFF
O
Uni-link on/off control signal output for the SONY bus interface “L”: link on
3
ERR-PWM
O
Error rate PWM output terminal Not used
4
NC
O
Not used
5
3TPWM
O
3T jitter PWM output terminal Not used
6
NC
O
Not used
7
A-ATT
O
Audio muting on/off control signal output terminal “H”: muting
8
NC
O
Not used
9
VSS
—
Ground terminal
10
NC
O
Not used
11
EMPHA_0
O
MD emphasis control signal output terminal “H”: emphasis on Not used
12
NC
O
Not used
13
DISC_EXIST
I
Disc detection sensor input terminal Not used
14
EJECT_OK
I
Front panel open/close detection input terminal “L”: close
15
OPEN_REQ
O
Eject request signal output terminal “L”: close request, “H”: open request
16
SRDT
I
Reading serial data signal input from the MD DSP
17
SWDT
O
Writing serial data signal output to the MD DSP
18
SCLK
O
Serial data transfer clock signal output to the MD DSP
19
MD-LAT
O
Serial data latch pulse output to the RF amplifier and MD DSP
20
NC
O
Not used
21
VCC
—
Power supply terminal (+3.3V)
22 to 24
NC
O
Not used
25
RXD
I
Receive data input terminal for UART communication when data writing to the internal flash
memory
memory
26
TXD
O
Transmit data output terminal for UART communication when data writing to the internal flash
memory
memory
27
FLASH_W
I
Mode select terminal for data writing to the internal flash memory
28 to 32
NC
O
Not used
33
AVCC
—
Power supply terminal (+3.3V)
34
AVRH
I
Reference voltage input for the internal A/D converter
35
AVSS
—
Ground terminal
36 to 39
NC
O
Not used
40
VSS
—
Ground terminal
41
REF_LEVEL
I
Light amount signal (ABCD) input terminal
42 to 45
NC
O
Not used
46
CC-XINT
I
Interrupt status input from the MD DSP
47 to 49
MD0 to MD2
—
Setting terminal for the CPU operational mode
50
BUS_ON
I
SONY bus on/off control signal input terminal “L”: bus on
51
BU_IN
I
Back up power supply detection signal input terminal “L” is input at low voltage
52
SQ_SY
I
Subcode Q sync (SCOR) input from the MD DSP
“L” is input every 13.3 msec Almost all, “H” is input
“L” is input every 13.3 msec Almost all, “H” is input
53
DISC-IN
I
Disc loading detection switch input terminal “L”: loading
54, 55
NC
O
Not used
56
UNISI
I
Serial data input from the SONY bus interface IC
57
UNISO
O
Serial data output to the SONY bus interface IC
58
UNICLK
I
Serial data transfer clock signal input from the system controller
38
MDX-CA790X
Pin No.
Pin Name
I/O
Description
59
NC
O
Not used
60
ADER-PWM
O
ADIP error PWM output terminal Not used
61 to 68
NC
O
For test terminal Not used
69
MDMON_CHECK
I
Power supply detection of MD mechanism deck section (MDMON)
70
MDON_CHECK
I
Power supply detection of servo section (MDON)
71 to 74
NC
O
Not used
75
RSTX
I
System reset signal input from the reset signal generator and reset switch “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”
76
NC
O
Not used
77
XIA
I
System clock input terminal Not used
78
XOA
O
System clock output terminal Not used
79
VSS
—
Ground terminal
80
X0
I
System clock input terminal (18.43 MHz)
81
X1
O
System clock output terminal (18.43 MHz)
82
VCC
—
Power supply terminal (+3.3V)
83
NC
O
Not used
84
EJECT
O
Loading motor control signal output terminal (eject direction)
85
LOAD
O
Loading motor control signal output terminal (loading direction)
86
NC
O
Not used
87
LIMIT_IN
I
Detection input from the sled limit-in detect switch
The optical pick-up is inner position when “L”
The optical pick-up is inner position when “L”
88
LOAD_END
I
Chucking completed detection switch input terminal “L”: chucking completion
89
INIT1
I
Analog/digital model setting terminal “L”: digital Not used
90, 91
INIT2, INIT3
I
Digital word size setting terminal Not used
92
NC
O
Not used
93
MD_ON
O
Power supply on/off control signal output of the servo section “H”: power on
94
MD_RST
O
System reset signal output to the servo section
95
SENS
I
Internal status (SENS) input from the MD DSP
96
NC
O
Not used
97
NC
I
Not used
98
MNT2
I
Monitor signal input from the MD DSP (for reserve terminal)
99
NC
O
Not used
100
FOK
I
Focus OK signal input terminal “H”: focus OK
39
MDX-CA790X
•
MAIN BOARD IC600 MN101E01KDA1 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
DAVDD
—
Power supply terminal (+3.3V)
2
NCO
O
Not used
3
DAVSS
—
Ground terminal
4 to 9
NCO
O
Not used
10
VDD1
—
Power supply terminal (+3.3V)
11
MMOD
I
Internal flash memory data write mode detection signal input terminal Not used
12
OSCOUT
O
System clock output terminal (27.648 MHz)
13
OSCIN
I
System clock input terminal (27.648 MHz)
14
VSS1
—
Ground terminal
15
XIN
I
System clock input terminal (32.768 kHz)
16
XOUT
O
System clock output terminal (32.768 kHz)
17
VDD2
—
Power supply terminal (+3.3V)
18
MOD1
I
Setting terminal for the CPU operational mode fixed at “H”
19
RESET
I
System reset signal input from the reset signal generator and reset switch “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”
20
RCIN1
I
Rotary remote commander shift key input terminal
21
ACCIN
I
Accessory power detection signal input terminal “L”: accessory power on
22
TESTIN
I
Test mode setting terminal “L”: test mode, normally fixed at “H”
23
TELLATT
I
Telephone muting detection signal input terminal
At input of “H”, the audio signal is attenuated by 20 dB
At input of “H”, the audio signal is attenuated by 20 dB
24
ATT
O
Audio muting on/off control signal output terminal
25
ADON
O
A/D converter power control signal output
When the KEY ACK (pin 27) that controls reference voltage power for key A/D conversion input
is active, “L” is output from this terminal to enable the input
When the KEY ACK (pin 27) that controls reference voltage power for key A/D conversion input
is active, “L” is output from this terminal to enable the input
26
NCO
—
Not used
27
KEYACK
I
Acknowledge signal (wake up signal) input terminal for the key entry Acknowledge signal is
input to accept any function key in the standby status On at input of “H”
input to accept any function key in the standby status On at input of “H”
28
TUATTIN
I
Tuner muting zero-cross detection signal input terminal
29
MDON
I
Power supply on/off control signal input of the servo section
30
MDMON
I
Power supply on/off control signal input of the MD mechanism deck section
31
BUIN
I
Back up power supply detection signal input terminal “L” is input at low voltage
32
NCO
O
Not used
33
UNISO
O
Serial data output to the SONY bus interface IC
34
UNISI
I
Serial data input from the SONY bus interface IC
35
UNICKO
O
Serial data transfer clock signal output to the SONY bus interface IC and MD mechanism
controller
controller
36 to 38
NCO
O
Not used
39
OPENREQ
O
Front panel open request signal output terminal Not used
40
BUSON
O
SONY bus on/off control signal output terminal “L”: bus on
41
MDBOOT
O
Internal flash memory data write control signal output terminal Not used
42
SYSRST
O
System reset signal output to the MD mechanism controller and SONY bus interface IC
43 to 50
NCO
O
Not used
51
AMPATT
O
Amplifier muting on/off control signal output terminal Not used
52
DEST1
I
Setting terminal for the destination
53, 54
DEST2, DEST3
I
Setting terminal for model discrimination Not used
55
DOORSW
I
Front panel open/close detection input terminal “L”: close
40
MDX-CA790X
Pin No.
Pin Name
I/O
Description
56
DIAG
I
DIAG signal input from the power amplifier
57
VOLATT
O
Muting on/off control signal output to the electrical volume
58
NCO (AUX)
O
Not used
59
NOSESW
I
Front panel remove/attach detection signal input terminal “L”: front panel is attached
60 to 62
NCO
O
Not used
63
VSS2
O
Ground terminal
64
TUATT
O
Tuner muting on/off control signal output terminal
65
NCO (TUON)
O
Not used
66
NSMASK
O
Discharge control signal output for the noise detection circuit “H”: discharge
67
E2P_CKO
O
Serial data transfer clock signal output to the EEPROM in tuner unit
68
E2P_SIO
I/O
Two-way data bus with the EEPROM in tuner unit
69
DOORIND
O
Illumination LED drive signal output of the sub panel
70
AMPSTB
O
Standby on/off control signal output to the power amplifier
71 to 75
NCO
O
Not used
76
LCDSO
O
Serial data output to the LCD controller
77
LCDCE
O
Chip enable signal output to the LCD controller
78
LCDCKO
O
Serial data transfer clock signal output to the LCD controller
79
I2C_SIO
I/O
IIC two-way data bus with the tuner unit, electrical volume and power amplifier
80
NCO
O
Not used
81
I2C_CKO
O
IIC bus clock signal output to the tuner unit, electrical volume and power amplifier
82
DAVN
I
Data transmit completed detection signal input terminal
83
SIRCS
I
SIRCS signal input terminal
84
NCO
O
Not used
85
BEEP
O
Beep sound drive signal output terminal
86 to 88
NCO
O
Not used
89
VDD3
—
Power supply terminal (+5V)
90
NCO
O
Not used
91
VSS3
—
Ground terminal
92
QUALITY
I
Noise level detection signal input at SEEK mode (A/D input)
93
VSM
I
FM and AM signal-meter voltage detection signal input from the tuner unit (A/D input)
94
KEYIN1
I
Front panel key input terminal (A/D input)
95
KEYIN0
I
Front panel key input terminal (A/D input)
96
RCIN0
I
Rotary remote commander key input terminal (A/D input)
97 to 99
NCO
O
Not used
100
VREF+
I
Reference voltage (+5V) input terminal
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