Sony CDX-GT820IP Service Manual ▷ View online
CDX-GT820IP
CDX-GT820IP
29
29
R902
D916
Q910
R92
9
R93
0
R931
R932
R90
9
R870
R871
R871
R90
8
C902
Q911
C903
CN901
FB901
FB902
FB903
FB902
FB903
S901
R867
R866
C910
R877
R874
R933
R873
R876
R912
C916
C918
R926
R92
7
R928
LED903
LED901
LED902
LED906
LED904
LED907
LED908
LED909
LED910
LED911
LED912
LED913
LED914
LED915
LED916
R868
R816
R913
R818
R820
R801
R803
R805
R807
R804
R806
R808
R923
R925
R809
R811
R813
R810
R812
R814
R815
R817
R819
R802
R895
R915
R821
R823
R825
R822
R824
R826
R827
R829
R831
R828
R830
R832
R833
R835
R837
R834
R836
R838
R839
R841
R840
R842
R843
R844
R845
R847
R846
R848
LED918
LED920
LED919
LED917
R924
D905
R872
C909
C909
C911
R875
R879
R878
C914
R901
R900
R893
R892
R899
R89
8
R896
R897
C912
R894
R922
R869
R920
R921
R881
R884
R886
R880
R882
R90
6
R907
C920
C915
S902
S903
S904
S905
S906
S907
S908
S914
S913
S912
S911
S910
S909
R859
R860
R861
R862
R863
R864
R858
R857
R856
R855
R854
R853
R865
R914
S915
S916
IC903
IC902
J901
Q902
Q903
Q904
Q905
R903
R905
R904
X901
RB901
D918
D917
D907
D915
D914
D915
D914
D908
D912
D912
D911
D913
D910
D909
D906
D913
D910
D909
D906
RE901
IC901
R916
FL901
C917
5-12. SCHEMATIC DIAGRAM – KEY Section –
• See page 19 for Waveforms. • See page 31 for IC Block Diagrams. • See page 34 for IC Pin Function Description of IC901.
(Page 27)
CDX-GT820IP
CDX-GT820IP
30
30
1
2
3
6
5
4
17
18
19
20
7
10
15
16
12
11
14
13
8
9
LIFT AMP
LIFT AMP
CIN (L)
OUT (RL)
RL-
RL+
VCC
RR+
RR-
OUT (RR)
CIN (R)
GND (R)
COUT (R)
OUT (FR)
FR-
FR+
REF
FL+
FL-
OUT (FL)
COUT (L)
GND (L)
SIGNAL AMP
FRONT-RIGHT
REAR-RIGHT
FRONT-LEFT
REAR-LEFT
SIGNAL AMP
SIGNAL AMP
SIGNAL AMP
• IC Block Diagrams
IC300 TDA8588AJ/N2/R1 (MAIN Board (1/4))
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
ANT–REM
AMP–REM
SERVO3.3V
MECH6V
VP
BU+B
SDA
SCL
VP2
PGND1
SVR
IN–FL
IN–FR
BEEP
PGND3
VP1
STB
PGND4
RST
CRES
AUDIO+B
GND
PANEL+B
CBU
FL
RL
RR
VP
FR
I
2
C BUS
IC601 BA8271F-E2 (MAIN Board (1/4))
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
RST
BUS.IN
CLK-IN
B/U-C
BUS.IN
CLK-IN
B/U-C
DATA IN
DATA OUT
DATA I/O
IC401 BD3442FS-E2 (MAIN Board (2/4))
IC402 NJM2792V(TE2) (MAIN Board (2/4))
1
2
BUS-RCH
100k
100k
100k
100k
100k
100k
250k
250k
250k
BUS-LCH
TU-RCH 3
4
TU-LCH
5
CD-RCH
6
CD-LCH
7
AUX-RCH
8
AUX-GND
9
AUX-LCH
10
DS3-L
11
DS1-L
12
DS2-L
13
EBIAS
14
DS2-R
15
DS1-R
16
DS3-R
26 OUT-FR
27 VCC
VCC
VCC2
28 MUTE
29 SCL
30 SDA
31 GND
32 FIL
INPUT
SELECTOR
VOLUME1
/MUTE
VOLUME2
I2C
BUS
LOGIC
TREBLE
/BASS
/MIDDLE
SPECTRUM
ANALYZER
FADER
25 OUT-FL
24 OUT-RR
23 OUT-RL
FADER
FADER
22 SUBOUT-R
21
20
SUBOUT-L
19
ADJ
18
SAOUT
17
SADA
SACLK
FADER
FADER
LPF
EFFECT
INPUT
GAIN
FADER
CDX-GT820IP
31
IC250 NJM2387ADL3(TE2) (MAIN Board (3/4))
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
IC620 NJM2377M(TE2) (MAIN Board (3/4))
1
2
3
4
5
CURRENT
LIMIT
THERMAL
PROTECTION
OVERVOLTAGE
PROTECTION
BANDGAP
REFERENCE
VIN
CONT
VOUT
VADJ
GND
CDX-GT820IP
32
• IC Pin Function Descriptions
MAIN BOARD (4/4) IC303 M30626FHPA16GP (SYSTEM CONTROL)
MAIN BOARD (4/4) IC303 M30626FHPA16GP (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Description
1
DST_SEL0
I
Destination/unit setting pin (Fixed at L: FM (200k)/AM (10k))
2
FSW-IN
I
DC-DC converter oscillation frequency count signal input
3
UNI_SO
O
SONY-BUS data signal output
4
UNI_SI
I
SONY-BUS data signal input
5
UNI_CKO
O
SONY-BUS clock signal output
6
BYTE
I
Connect to VSS. (Fixed at L)
7
CNVSS
I
Flash writer signal input (L: normally operation, H: writer mode)
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
13
XIN
I
Main-clock signal input (6 MHz)
14
VCC1
—
Power supply pin (+3.3 V)
15
NMI
I
Nonmaskable interruption signal input (Fixed at H)
16
CDM_ON
I
CD mechanism deck power control request signal input
17
DAVN
I
RDS data block synchronized detection signal input (Fixed at H)
18
TUNER ATT-IN
I
Not used. (Open)
19
NS-MASK
O
Not used. (Open)
20
BEEP
O
Beep signal output
21
TUNER ATT
O
Tuner mute control signal output
22
EESIO(TU)
I/O
Serial data signal input/output for EEPROM communication.
23
EECKO(TU)
O
Serial clock signal output for EEPROM communication.
24
FUNC_SEL
O
iPod audio input/AUX audio input select control signal output (L: iPod audio input, H: AUX
audio input)
audio input)
25
ATT
O
Audio mute control 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 writer transmitter signal output
30
RX
I
Flash writer receiver signal input
31, 32
NC
O
Not used. (Open)
33
CD_TX
O
CD mechanism deck transmitter signal output
34
CD_RX
I
CD mechanism deck receiver signal input
35
E-MUTE
O
Electronic volume IC mute detection signal output
36
E-DATA
O
Spectrum analyzer data signal output
37
E-CLK
O
Spectrum analyzer clock signal output
38
NC
O
Not used. (Open)
39
HOLD
I
External data bus (HOLD) signal input (Fixed at L)
40
AMP_DIAG
I
Amplifi er self diagnostic mode signal input
41
AMP_STB
O
Amplifi er standby signal output
42
LANG
I
Foreign language font display mode with/without setting signal input (Fixed at L: without
foreign language font display mode)
foreign language font display mode)
43
NC
O
Not used. (Open)
44
WRI/WR
I
External data bus (WRI/WR) signal input (Fixed at H)
45
WAKE_UP_OUT
O
Wake-up signal output (L: sleep mode, H: wake-up mode)
46
OPEN_REQ
I
Front panel open request signal input
47
EJECT_OK
O
CD eject OK signal output
48
NC
O
Not used. (Open)
49
CD_ON
I
CD mechanism servo power control request signal input
50
Z_DET
I
CD zero cross mute detection signal input
51
ILL-IN
I
Illumination detection signal input
52
ACC_IN
I
Accessory power supply detection signal input
53
TEL_ATT
I
Telephone attenuator detection signal input
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