Sony CDX-GT355 Service Manual ▷ View online
29
CDX-GT355
IC401 TDA7419TR (MAIN Board (1/2))
2
3
1
4
5
6
7
SUPPLY
I2C BUS
DIGITAL CONTROL
INPUT
MULTIPLEXER
15
18
17
16
16
19
20
21
22
23
24
27
25
26
28
8
9
10
11
12
13
14
SOFTSEP
MONO FADER
SOFTSEP
MONO FADER
SOFTSEP
MONO FADER
SUBWOOFER
L.P.F
MIX
MIX
HPF
BUSS
MIDDLE
SPECTRUM
ANALYZER
TREBLE
SOFTSTEP
VOLUME
IN GAIN
AUTO ZERO
SOFT
MUTE
LOUDNESS
HPF
SOFTSEP
MONO FADER
SOFTSEP
MONO FADER
SOFTSEP
MONO FADER
ACOUTR
ACINR
ACINL
ACOUTL
AC2INL
AC2INR
SE2L
SE2R
SE1L
SE1R
DIFFL
DIFFG
DIFFR
CREF
GND
OUTLR2
OUTRF
OUTRR1
OUTLR1
OUTLF
MUTE
SCL
SDA
VDD
SAIN
SAOUT
VREF
OUTRR2
30
CDX-GT355
• IC PIN DESCRIPTIONS
• IC3 MB90486BPFV-G-177E1 (CD SYSTEM CONTROL) (SERVO BOARD (2/2))
Pin No.
Pin Name
I/O
Pin Description
1
CDON_1500MV
O
Servo 1.5 V power supply control signal output
2 to 5
NC
—
Not used. (Open)
6
DRVON
O
Motor drive mute signal output
7
CD_BUS0
I/O
Bus data input/output 0
8
CD_BUS1
I/O
Bus data input/output 1
9
VSS
—
Ground
10
CD_BUS2
I/O
Bus data input/output 2
11
CD_BUS3
I/O
Bus data input/output 3
12
CD_BUCK
O
Bus clock signal output
13
CD_XCCE
O
Chip enable signal output
14
CD_XRST
O
Reset signal output
15
CD_ZDET
I
Zero detection signal input
16 to 20
NC
—
Not used. (Open)
21
VCC
—
Power supply (+3.3 V)
22
DAC_ZDETL
I
Zero data detection signal input (L-ch) Not used (Pull down)
23
DAC_ZDETR
I
Zero data detection signal input (R-ch) Not used (Pull down)
24
NC
—
Not used. (Open)
25
RXD
I
UART RXD data input (MCBUS/Flash data input)
26
TXD
O
UART TXD data output (MCBUS/Flash data output)
27
DEC_SSTBY
O
SRAM STANDBY mode control signal output
28, 29
NC
—
Not used. (Open)
30
DEC_INT
I
Request signal input
31, 32
NC
—
Not used. (Open)
33
AVCC
—
Power supply (+3.3 V) for A/D converter
34
AVRH
—
External reference voltage for A/D converter
35
AVSS
—
Ground
36
NC
—
Not used. (Open)
37
DEC_XMUTE
O
Mute signal output L: mute
38, 39
NC
—
Not used. (Open)
40
VSS
—
Ground
41
NC
—
Not used. (Open)
42
MEC_LIMIT
I
Sled limit in detection switch signal input
43
MEC_LOAD
O
Loading motor signal output (Load direction)
44
MEC_EJECT
O
Loading motor signal output (Eject direction)
45
MEC_INSW
I
Pack-in detection signal input
46
MEC_DSW
I
Chucking end detection switch signal input
47, 48
MD0, MD1
I
CPU operation mode designation signal input (Pull up)
49
MD2
I
CPU operation mode designation signal input (Pull down)
50
BUS_ON
I
Bus on signal input L: bus on
51
BU_IN
I
Backup on/off signal input H: backup on, L: backup off
52
NC
I
Not used. (Open)
53
MEC_SELFSW
I
Disc insert detection switch signal input L: disc in interruption
54, 55
NC
—
Not used. (Open)
56
UNISI
I
Serial data input
57
UNISO
O
Serial data output
58
UNICKI
I
Serial clock input
59
LINEOFF
O
Line off signal output
60
A_ATT
O
Audio attenuation signal output H: ATT on
31
CDX-GT355
61
EJECT_OK
I
Front panel open signal input H: eject
62
OPEN_REQ
O
Front panel open/close request signal output Not used in this set.
63
MECON
O
Mechanism deck power supply control signal output
64
CDON
O
Servo power supply control signal output
65
XUART
I
Sony-Bus/MC-Bus change signal input Not used (Pull up)
66
ZMUTE
O
Zero detection mute signal output
67
MECON_CHK
I
MECHA +6V power rising detection signal input
68
CDON_CHK
I
SERVO +3.3V power rising detection signal input
69 to 74
NC
—
Not used. (Open)
75
RSTX
I
System reset signal input
76
NC
—
Not used. (Open)
77
X1A
—
Not used. (Open)
78
X0A
—
Not used. (Connected to Vss.)
79
VSS
—
Ground
80
X0
I
Main-clock input (12 MHz)
81
X1
O
Main-clock output (12 MHz)
82
VCC
—
Power supply (+3.3 V)
83
XWD
I
Not used. (Open)
84
XINIT3
I
Not used. (Open)
85
NC
—
Not used. (Open)
86
XSJIG
I
Not used. (Open)
87 to 89
XINIT0 to 2
I
Not used. (Open)
90 to 96
NC
—
Not used. (Open)
97
XDES
I
Destination setting pin
98
XLINE
I
Not used. (Open)
99, 100
NC
—
Not used. (Open)
Pin No.
Pin Name
I/O
Pin Description
32
CDX-GT355
• IC501 MB90488BPF-G-204E1 (SYSTEM CONTROL) (MAIN BOARD (2/2))
Pin No.
Pin Name
I/O
Pin Description
1
AREASEL2
I
Destination setting pin (Pull up)
2
AREASEL1
I
Destination setting pin (Pull up)
3
AREASEL0
I
Destination setting pin (Pull down)
4
611_SEL
I
611WA/611TA setting pin (Pull down)
5
BEEP
O
Beep signal output
6
NCO
—
Not used (Open)
7
NOSE_SW
I
Front panel detect signal input
8
DIAG
I
Power AMP status signal input
9
VOLATT
O
Electronic volume attenuate control signal output
10
CYRIL_SEL
I
CYRIL/NON-CYRIL Setting pin (Pull down)
11
VSS
—
Ground
12
TUATT
O
Tuner mute control signal output
13
NSMASK
O
Not used (Open)
14
WMA
I
WMA mode setting pin (Pull up)
15
LCD_SEL
I
Illumination voltage setting pin (Pull down)
16
NCO
—
Not used (Open)
17
FUNC_SEL
O
BUS AUDIO IN/TUNER select signal output
18
NCO
—
Not used (Open)
19
NCO
—
Not used (Open)
20
NCO
—
Not used (Open)
21
NCO
—
Not used (Open)
22
NCO
—
Not used (Open)
23
VCC5
—
Power supply (+3.3V)
24
EEP_SIO
I/O
EEPROM bus serial data input/output
25
EEP_CKO
O
EEPROM bus serial clock output
26
AMPSTB
O
Power AMP standby signal output
27
LCD_CE/FLS_SI
O
LCD driver chip enable output
28
LCD_SO/FLS_SO
O
LCD driver serial data output
29
LCD_CKO
O
LCD driver serial clock output
30
RDSON
O
RDS ON signal output (Not used)
31
NCO
—
Not used (Open)
32
NCO
—
Not used (Open)
33
I2C_CKO
O
I2C bus serial clock output
34
I2C_SIO
I/O
I2C bus serial data input/output
35
DAVDD
—
Power supply (+3.3V) for A/D converter
36
AVRH
—
A/D converter reference voltage supply (+3.3V)
37
DAVSS
—
Ground
38
QUALITY
I
Not used (Pull down)
39
VSM
I
S-meter voltage detect signal input
40
KEYIN1
I
Key signal input
41
KEYIN0
I
Key signal input
42
VSS
—
Ground
43
RC_IN0
I
Rotary commander key signal input
44
SA_IN
I
Spectrum analyzer data input
45
SA_CKO
O
Spectrum analyzer clock output
46
DOOR_IND
O
Door indicator on/off signal output
47
RE-1
I
Rotary encoder (Volume) signal input
48
RE-0
I
Rotary encoder (Volume) signal input
49
MD0
I
Operation mode setting pin (Pull up)
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