Sony CDX-GT225C Service Manual ▷ View online
25
25
CDX-GT225C
CDX-GT225C
R901
R902
R903
R904
R905
R907
R908
R909
R911
R910
R912
R913
R914
R915
C983
C984
R986
R981
R982
C986
CN901
C981
R985
R984
R943
R944
R932
R934
R933
R931
R864
R863
R949
R950
R870
R869
R954
R874
R971
R972
R882
R881
R945
R865
R866
R946
R951
R871
R872
R952
FB903
R873
R953
C987
R868
R948
R867
R947
LED941
LED861
R975
R974
LSW901(2/2)
LSW902(2/2)
LSW903(2/2)
LSW904(2/2)
LSW901(1/2)
LSW902(1/2)
LSW903(1/2)
R941
R942
R862
LSW904(1/2)
LSW905(1/2)
LSW906(1/2)
LSW907(1/2)
LSW908(1/2)
LSW909(1/2)
LSW910(1/2)
LSW911(1/2)
LSW905(2/2)
LSW906(2/2)
LSW907(2/2)
LSW908(2/2)
LSW909(2/2)
LSW910(2/2)
LSW911(2/2)
LED862
LED864
LED865
LED871
LED872
LED873
LED942
LED943
LED944
LED945
LED951
LED952
LED953
IC971
J901
R987
R977
R979
R978
R988
C971
S901
S902
S903
S904
LCD901
LED931
R861
Q932
D997
D998
Q991
Q992
D981
D982
IC901
D994
D991
D992
D993
D903
RE901
(Page 23)
5-9. SCHEMATIC DIAGRAM – KEY Section –
26
26
CDX-GT225C
CDX-GT225C
• IC Block Diagrams
IC401 BD3442FS-E2 (MAIN Board (1/4))
IC750 TDA8589BJ/N2/R1/M5 (MAIN Board (2/4))
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
SERVO5V
MECH6V
VP
B.UP+B
SDA
SCL
VP2
PGND3
SVR
IN-FL
IN-FR
BEEP
PGND2
VP1
STB
PGND1
RST
CRES
AUDIO8.3V
GND
PANEL+B
CBU
FL
RL
RR
VP
FR
I
2
C BUS
1
2
BUS-L
100k
100k
100k
100k
100k
100k
250k
250k
250k
BUS-R
TU-L 3
4
TU-R
5
CD-L
6
CD-R
7
AUX-L
8
AUX-G
9
AUX-R
10
DS32
11
DS11
12
DS22
13
EBIAS
14
DS21
15
DS11
16
DS31
26 OUTF1
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 OUTF2
24 OUT-R1
23 OUT-R2
FADER
FADER
22 OUTS1
21
20
OUTS2
19
ADJ
18
SOUT
17
DATA
CLK
FADER
FADER
LPF
EFFECT
INPUT
GAIN
FADER
IC51 TDA7333013TR (MAIN Board (1/4))
VDDA
INTERPOLATOR
RAM
BUFFER
&
CONTROL
LOGIC
TEST LOGIC
&
PIN MUX'S
I
2
C/SPI
INTERFACE
BAND PASS
FILTER
SIGMA DELTA
CONVERTER
SINC4
FILTER
REF3
REF2
REF1
VSS
VDDD
RESETN
TM
1
MPX
16
CSN
SDAOUT
RDSREG
3
INTN
MPX
SINC4REG
SDAIN
SCK
SPI
TESTREG
SCK
SPI
TESTREG
14
2
3
4
5
6
7
8
INTN
15
SA
13
SDA
12
SCL
11
OSCILLATOR
XTO
10
XTI
9
RDS
DEMODULATOR &
SYNCHRONIZATION
2
27
CDX-GT225C
• IC Pin Descriptions
IC501 MB90F045PF-G-9065-SPE1 (SYSTEM CONTROL) (MAIN BOARD (3/4))
IC501 MB90F045PF-G-9065-SPE1 (SYSTEM CONTROL) (MAIN BOARD (3/4))
Pin No.
Pin Name
I/O
Pin Description
1
AREASEL0
I
Destination function setting pin 0
2
AREASEL1
I
Destination function setting pin 1
3
AREASEL2
I
Destination function setting pin 2
4
AREASEL3
I
Destination function setting pin 3
5
BEEP
O
BEEP signal output to power amplifier
6
CYRIL_SEL
I
Cyril correspondence discrimination signal input “L”: No correspondence
7
NOSE_SW
I
Front panel attachment detect signal input “L”: Panel on, “H”: Panel off
8
DIAG
I
Status signal input from power amplifier
9
VOLATT
O
Electronic volume attenuate control signal output
10
NCO
O
Not used. (Open)
11
VSS
—
Ground pin
12
TUATT
O
Tuner mute control signal output
13
NSMASK
O
Noise mask signal output
14 to 22
NCO
O
Not used. (Open)
23
VCC5
—
Power supply pin (+3.3V)
24
EEP_SIO
I/O
EEPROM bus serial data signal input/output
25
EEP_CKO
O
EEPROM bus serial clock signal output
26
AMPSTB
O
Stand-by signal output to power requlation
27
LCD_CE
O
Chip enable signal output to LCD driver
28
LCD_SO
O
Serial data signal output to LCD driver
29
LCD_CKO
O
Serial clock signal output to LCD driver
30
RDS ON
O
RDS (radio data system) ON signal output
31
RE-IN0
I
Rotary encoder signal input 0
32
RE-IN1
I
Rotary encoder signal input 1
33
I2C_CKO
O
I2C bus serial clock signal output
34
I2C_SIO
I/O
I2C bus serial data signal input/output
35
DAVDD
—
A/D converter power supply pin (+3.3V)
36
AVRH
—
A/D converter external reference power supply pin (+3.3V)
37
DAVSS
—
A/D converter Ground pin
38
QUALITY
I
Noise detect signal input
39
VSM
I
S-meter voltage detect signal input
40
KEYIN1
I
Key signal input 1
41
KEYIN0
I
Key signal input 0
42
VSS
—
Ground pin
43
RC_IN0
I
Rotary commander key signal input
44 to 48
NCO
O
Not used. (Open)
49
MD0
I
Operation mode setting pin 0 (Pull up)
50
MD1
I
Operation mode setting pin 1 (Pull up)
51
MD2
I
Operation mode setting pin 2 (Pull down)
52
KEYACK
I
Key acknowledgment detect signal input
53
TU_ATTIN
I
Tuner mute zero cross detect signal input
54
BUIN
I
Back-up power supply detect signal input
55
NCO
O
Not used. (Open)
56
DAVN
I
RDS data block synchronized detect signal input
57
NCO
O
Not used. (Open)
58
UNISI
I
S-BUS data signal input
59
UNISO
O
S-BUS data signal output
60
UNISCK
O
S-BUS clock signal output
28
CDX-GT225C
61
CODEC_SEL
I
MP3 select signal input “H”: MP3, “L”: Non-MP3
62
ILLUMI SEL
I
Illumination voltage setting signal input “H”: 10.4 V, “L”: 9.0 V
63
NCO
O
Not used. (Open)
64
SIRCS
I
Remote control signal input
65 to 67
NCO
O
Not used. (Open)
68
FLASH_W
I
Memory mode select signal input Not used in this set. (Pull up)
Normally “H” input: Single chip mode, after reset “L”: Flash write mode
69, 70
NCO
O
Not used. (Open)
71
RC_IN1
I
Rotary commander shift key signal input
72
ACC_IN
I
Accessory power supply detect signal input
73
TESTIN
I
Test mode detect signal input
74
TELATT
I
Telephone attenuate detect signal input
75
NCO
O
Not used. (Open)
76
AD_ON
O
A/D converter power supply control signal output
77
RESET
I
System reset signal input
78
NCO
O
Not used. (Open)
79
XOUT
O
Low speed operation clock signal output (32.768 kHz)
80
XIN
I
Low speed operation clock signal input (32.768 kHz)
81
VSS1
—
Ground pin
82
OSCIN
I
High speed operation clock signal input (18.432 MHz)
83
OSCOUT
O
High speed operation clock signal output (18.432 MHz)
84
VCC3
—
Power supply pin (+3.3 V)
85
DEMOSEL
I
DEMO select signal input “H”: DEMO on, “L”: DEMO off
86
ATT
O
Audio mute control signal output
87
BUSON
O
BUS ON signal output
88
SYSRST
O
System reset signal output
89 to 92
NCO
O
Not used. (Open)
93
Z-MUTE
I
CD zero cross mute detect signal input
94
B OUT SEL
I
Black out with/without discrimination select signal input “H”: Black out
95
INI RS
I
REAR/SUB INITIAL setting signal input “H”: REAR INITIAL, “L”: SUB INITIAL
96
MO-DISP
I
Motion display signal input “H”: Motion display on, “L”: Motion display off
97
DIM_SEL
I
Dimmer select signal input (Pull up) “H”: Dimmer, “L”: No dimmer
98
CD_ON
I
CD mechanism servo power supply control request signal input
99
CDM_ON
I
CD mechanism deck power supply control request signal input
100
COL_SW
I
Illumination color select signal input (Pull up)
“H”: Two colors selection/initial slave, amber, “L”: Color/slave, amber
Pin No.
Pin Name
I/O
Pin Description
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