Sony CDX-GT929U / CDX-GT970US Service Manual ▷ View online
CDX-GT929U/GT970US
37
MUTE
MUTE
ENABLE
LOGIC
STANDBY/
MUTE
BATTERY
DETECTION
CHIP DETECT/
DIAGNOSTIC
PROTECTION/
DIAGNOSTIC
SWITCH
REGULATOR
SWITCH
REFERENCE
VOLTAGE
LOADDUMP
PROTECTION
TEMPERATURE
PROTECTION
BACK-UP
SWITCH
REGULATOR
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
TAB
OUT–FL–
OUT–FL+
OUT–RL–
OUT–RL+
IN–RL
S–GND
IN–RR
OUT–RR+
OUT–RR–
OUT–FR+
OUT–FR–
DIAG
SW2(ANT–REM)
SW1(AMP–REM)
REG3(SERVO)
REG4(DR+B)
VP(REG)
REG(BU5V)
SDA
SCL
VP2
PGND3
SVR
IN–FL
IN–FR
AC GND
PGND2
VP1
STB
PGND1
RST
CRES
REG1(AUDIO+B)
GND(REG)
REG5(ILL)
CBU
FL
RL
RR
VP
FR
I
2
C BUS
IC201 TDA8588AJ/N2/R1 (MAIN Board (2/4))
IC702 LB1930M-TLM-E (MAIN Board (3/4))
1
2
3
4
5
6
7
8
9
10
VCC
RIN
SGND
FIN
NC
NC
OUT2
NC
PGND
OUT1
CONTROL
CIRCUIT
MOTOR
DRIVE
CIRCUIT
BUFFER
BUFFER
CDX-GT929U/GT970US
38
IC703 BA09CCOWFP-E2 (MAIN Board (3/4))
IC620 NJM2377M(TE2) (MAIN Board (4/4))
IC110 BA8271F-E2 (MAIN Board (4/4))
DRIVER
VCC
2
1
3
5
4
TSD
N.C
OUT
N.C
VCC
CTL
OCP
OVP
VREF
8
7
5
6
VREF
OSC
0.52V
30A
L.O
PWM
ER.AMP
S.C.P
U.VLO
IN
F.B
GND
OUT
REF
CT
CS
VCC
1
2
4
3
1
2
3
4
5
5
6
7
8
9
10
14
13
12
11
12
11
BUS ON
SWITCH
RESET
SWITCH
BATTERY
SWITCH
BUS ON
RST
BATT
CLK
VREF
GND
VCC
RESET
BUS ON
CLK IN
B CHK
BUS ON
CLK IN
B CHK
DATA IN
DATA OUT
DATA I/O
CDX-GT929U/GT970US
39
IC602 BD9781HFP (MAIN Board (4/4))
IC601 TPS2051BDRG4 (MAIN Board (4/4))
IC621 NJM2903M (MAIN Board (4/4))
1
VIN
2
SW
3
RT
4
GND
6
INV
7
SYNC
5
FB
DRIVER
CURRENT LIMIT
ERROR
AMP
SOFT
START
PWM
COMPARATOR
THERMAL
SHUT DOWN
LATCH
OSC
SYNC
VREF
1
2
GND
OC
IN
CHARGE
PUMP
3
IN
4
EN
DRIVER
CURRENT
LIMIT
THERMAL
SENCE
UVLO
CS
8
7
7
5
6
OUT
OUT
OUT
OUT
OUT
1
2
AIN
AIN
GND
3
4
8
7
VCC
BOUT
BIN
BIN
6
5
AOUT
CDX-GT929U/GT970US
40
• IC Pin Function Description
MAIN BOARD IC303 M30626FHPA14GP (SYSTEM CONTROL)
MAIN BOARD IC303 M30626FHPA14GP (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Description
1
DST SEL0
I
Destination setting pin 0
2
FSW IN
I
D/D converter oscillator frequency count control signal input
3
UNI SO
O
SONY bus serial data signal output
4
UNI SI
I
SONY bus serial data signal input
5
UNI CKO
O
SONY bus serial clock signal output
6
BYTE
I
Connect to ground. (Fixed to “L”.)
7
CNVSS
I
Port for fl ash write H (Write switch) Normally operation: “L”
8
XCIN
I
Sub clock signal input (32.768 kHz)
9
XCOUT
O
Sub clock signal output (32.768 kHz)
10
RESET
I
Reset signal input
11
XOUT
O
Main clock signal output (6 MHz)
12
VSS
—
Ground pin
13
XIN
I
Main clock signal input (6 MHz)
14
VCC1
—
Power supply pin (+3.3 V)
15
NMI
I
Non-maskable interruption signal input Fixed to “H” for external pull-up resistor.
16
CDM ON
I
CD mechanism deck power supply control request signal input
17
DAVN
I
GT929U: RDS (Radio data system) data block synchronized detect signal input
GT970US: Not used in this set. (Pull down)
GT970US: Not used in this set. (Pull down)
18
TUNER ATT IN
I
Tuner mute zero cross detect signal input
19
NS MASK
O
GT929U: Noise mask signal output GT970US: Not used in this set. (Open)
20
BEEP
O
Beep signal output
21
TUNER ATT
O
Tuner mute signal output
22
EESIO (TU)
I/O
Tuner EEPROM serial data signal input/output
23
EECKO (TU)
O
Tuner EEPROM serial clock signal output
24
NC
O
Not used. (Open)
25
ATT
O
Mute signal output
26
NC
O
Not used. (Open)
27
I2C CKO
O
I2C bus serial clock signal output
28
I2C SIO
I/O
I2C bus serial data signal input/output
29
TX
O
Flash write data signal output
30
RX
I
Flash write data signal input
31
NC
O
Not used. (Open)
32
NC
O
Not used. (Open)
33
CD TX
O
CD fl ash write data signal output
34
CD RX
I
CD fl ash write data signal input
35
E MUTE
O
Electronic volume mute signal output
36
E DATA
O
Spectrum analyzer serial data signal output
37
E CLK
O
Spectrum analyzer serial clock signal output
38
NC
O
Not used. (Open)
39
HOLD
I
External data bus (HOLD) signal input Fixed to “L” for external pull-down resistor.
40
AMP DIAG
I
Amplifi er self-diagnostic test function signal input
41
AMP STB
O
Amplifi er standby signal output
42
NC
O
Not used. (Open)
43
VBUS IN
I
USB power supply request signal input “H”: USB power ON.
44
WRI/WR
I
External data bus (WRI/WR) signal input Fixed to “H” for external pull-up resistor.
45
WAKE UP OUT
O
CD mechanism wake up signal output
46
OPEN REQ
I
CD mechanism open request signal input
47
EJECT OK
O
CD mechanism eject control signal output
48
P MONITOR
O
P-SNSR process monitor signal output
49
CD ON
I
CD servo power supply on/off control signal input
50
Z DET
I
CD zero mute signal input “H”: ATT on
51
ILL IN
I
Illumination detect signal input
52
ACC IN
I
Accessory detect signal input
53
TEL ATT
I
Telephone mute detect signal input
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