Sony CDX-GT24 / CDX-GT28 Service Manual ▷ View online
CDX-GT24/GT28
CDX-GT24/GT28
21
21
1
A
B
C
D
E
F
G
H
I
2
3
4
5
6
7
8
9
10
11
12
13
14
A
MAIN BOARD CN701
1
37
LIQUID CRYSTAL DISPLAY PANEL
OFF
EQ3
LSW901
LSW904
N
SEEK–
.
SEEK+
LSW903
DSPL/SCRL
3/REP
4/SHUF
LSW909
LSW908
LSW907
LSW905
AF/TA/PTY
2/ALBUM+
LSW906
1/ALBUM–
5
6/PAUSE
LSW911
LSW910
1-874-378-
1-874-378-
(31)
31
(31)
31
PUSH SELECT
(VOLUME)
RE901
LED941,
S901
(AUX)
J901
;
LED942,
S902
LED943
S902
LED931
S903
S901
LED942
LED944
LED
945
R943
R948
R944
R905
R946
LCD901
R945
R902
R901
LSW910
LSW909
LSW908
LSW907
LSW906
LSW905
LSW903
LSW902
LSW902
SOURCE
LED944,
S903
LSW904
LSW901
S904
LED941
LSW911
LED931
(LCD BACK LIGHT)
R979
R978
R97
7
R982
C986
C983
D982
C984
R986
R985
R98
4
D981
R981
R987
C981
FB903
D993
R933
R931
R932
R903
Q932
R904
R907
R947
R908
R90
9
D998
R913
R949
R912
R911
R914
R95
2
R950
D991
R951
IC901
R910
CN901
1
2
5
4
3
C987
R988
Q931
R934
R942
R941
R992
R953
R954
R91
5
D903
D992
J901
RE901
MODE
LED945,
S904
C922
C921
4-7. PRINTED WIRING BOARD – KEY Section –
•
: Uses unleaded solder.
(Page 17)
Ref. No. Location
• Semiconductor Location
Ref. No. Location
Ref. No. Location
Ref. No. Location
D903
G-11
D981
H-10
D982
H-10
D991
G-11
D992
G-11
D993
G-11
IC901
G-8
LED931 C-13
LED941 B-13
LED942 A-1
LED941 B-13
LED942 A-1
LED944 B-4
LED945 C-4
Q931
G-10
Q932
G-10
CDX-GT24/GT28
CDX-GT24/GT28
22
22
R981
R982
R931
R932
R933
R902
R903
R913
R911
R910
R909
R908
R978
R905
R914
R915
R901
R907
R912
CN901
R904
R977
R979
FB903
C986
C987
C981
R987
C983
C984
C984
R984
R985
R986
R985
R986
R988
Q932
LCD901
S901
S902
S903
LSW901(1/2)
LSW
902(1/2)
LSW903(1/2)
LSW
904(1/2)
S904
LSW
905(1/2)
LSW
906(1/2)
LSW907(1/2)
LSW
908(1/2)
LSW909(1/2)
LSW910(1/2)
LSW911(1/2)
LSW901(2/2)
LSW902(2/2)
LSW904(2/2)
LSW905(2/2)
LSW906(2/2)
LSW907(2/2)
LSW908(2/2)
LSW909(2/2)
LSW911(2/2)
LSW910(2/2)
LSW903(2/2)
J901
LED941
R941
R942
LED943
LED942
R992
R944
R946
LED945
LED944
R943
R945
R947
R948
R950
R949
R951
R952
R954
R953
LED931
Q931
R934
D998
D981
IC901
RE901
RE901
D903
D991
D992
D993
C921
C922
D982
4-8. SCHEMATIC DIAGRAM – KEY Section –
(Page 19)
CDX-GT24/GT28
23
• IC Block Diagrams
IC750 TDA8589AJ/N2/R1/M5 (MAIN Board (1/3))
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
CDX-GT24/GT28
24
IC51 TDA733013TR (MAIN Board (2/3))
IC1 TEF6607T/V4/S470,518 (MAIN Board (2/3))
AMRFIN 1
AMRFDEC 2
FMIN2 3
FMIN1 4
LOUT 8
ROUT 9
MPXOUT 13
RSSI 14
XTAL2 15
XTAL1 16
GNDAUD 10
GNDRF 5
VCC+8.5V 6
AMRFAGC 7
AMIFAGC 11
MPXIN 12
AMOUT2
32
AMOUT1
31
AMIFAGC1
30
AMSELIN2
29
VCOLOOP
25
VCCVCO
24
VREF+4V
20
SDA
19
SCL
18
GNDDIG
17
GNDANA
23
AMSELIN1
28
TESTCT
27
VCOREF
26
VCC+8.5V
22
GREGSUP
21
AM
TUNER
FM
TUNER
OUTPUT
PLL
TUNING
SYSTEM
I2C BUS
POWER
SUPPLY
STEREO DECODER
HIGH CUT
SOFT MUTE
NOISE BLANKER
SIGNAL
IMPROVEMENT
CONTROL
BANDWIDTH
CONTROL
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
SCK
SPI
TESTREG
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
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