Sony CDX-GT180 / CDX-GT280 / CDX-GT280S / CDX-GT285S Service Manual ▷ View online
CDX-GT180/GT280/GT280S/GT285S
CDX-GT180/GT280/GT280S/GT285S
21
21
1
A
B
C
D
E
F
G
H
2
3
4
5
6
7
8
9
10
11
12
13
14
A
MAIN BOARD CN701
1
LED944
3
4
5
2
1
LIQUID CRYSTAL DISPLAY PANEL
IC971
OFF
EQ3
LED941,
S901
LSW913
SEEK+
SEEK–
LSW903
DSPL
/SCRL
LED951–953,
982,1951,1952
(RING ILLUMINATION)
3/REP
4/SHUF
LSW909
LSW908
LSW907
LSW905
2/ALBUM+
LSW906
1/ALBUM–
BTM
LSW904
LSW914
MODE
5
6/PAUSE
LSW911
LSW910
1-729-842-
1-729-842-
(21)
21
(21)
21
PUSH SELECT
(VOLUME)
RE901
LSW901
AUX
J901
LSW902
LCD901
LSW912
SOURCE
LED944
(CD INDICATOR)
LED952
LSW903
IC971
LED931
LSW902
LSW906
S901
LSW901
LSW904
LED1952
GT285S
GT285S
GT285S
GT180
/GT280
/GT280S
GT180
/GT280
/GT280S
GT280
/GT280S
/GT285S
LED951
LED1951
LED941
R975
C97
1
LED953
LSW912
R944
R905
R904
R907
R908
LSW908
R971
LED982
R902
LSW909
LSW910
R942
LSW911
LSW905
LSW907
R91
5
R954
R953
R1971
LSW913
R947
R941
LSW914
37
C990
R946
C921
C922
R922
R921
R921
R982
R974
D981
R981
FB903
GT280
/GT280S
/GT285S
D993
R933
R931
R932
R909
D992
R913
R949
R914
R952
R950
D991
D994
R910
CN901
R901
R992
D903
R948
GT285S
R943
R903
R972
R1972
R945
D985
D98
6
C999
R979
R978
R977
C986
D982
R984
R987
Q932
Q931
R934
IC901
D998
C983
C984
R912
R951
C987
R988
R986
R911
R985
C981
J901
RE901
.
N
;
LED931
(LCD BACK LIGHT)
1
2
3
4
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
G-10
D982
G-10
D985
G-12
D986
G-12
D991
G-11
D992
G-11
D993
G-11
D994
G-11
IC901
G-8
IC971
C-14
LED931 C-13
LED941 C-2
LED941 C-2
LED944 B-7
LED951 B-4
LED952 C-5
LED953 C-4
LED982 D-4
LED1951 C-5
LED1952 C-3
Q931
G-13
Q932
H-13
CDX-GT180/GT280/GT280S/GT285S
CDX-GT180/GT280/GT280S/GT285S
22
22
R901
R902
R903
R904
R907
R908
R909
R911
R910
R912
R913
R914
R915
R981
R982
D98
2
CN901
R943
R944
R932
R933
R931
Q932
R949
R950
R954
R945
R953
R948
R947
R975
R974
D903
D981
D994
D991
D992
D993
LED1951
LED
982
LED1952
D98
6
D985
R977
R979
R978
R988
R992
FB9
03
C999
C922
C921
R922
R921
LSW
901(1/2)
LSW902(1/
2)
LSW
903(1/2)
S901
LSW913(1/2)
LSW914(1/2)
LSW904(1/2)
LSW905(1/2)
LSW906(1/2)
LSW907(1/2)
LSW908(1/2)
LSW
909(1/2
)
LSW
910(1/2)
LSW911(1/2)
LSW912(1/2)
R905
R946
C971
C981
C987
C986
C983
C984
C984
R984
R985
R986
R985
R986
R987
R1972
R1971
C990
LSW
902(2/2)
LSW901(2/2)
LSW912(2/2)
LSW913(2/2)
LSW
903(2/2)
LSW914(2/2)
LSW904(2/2)
LSW905(2/2)
LSW906(2/2)
LSW909(2/2)
LSW908(2/2)
LSW907(2/2)
LSW910(2/2)
LSW911(2/2)
IC971
LCD901
J901
LED931
R934
D998
Q931
LED944
R941
R942
LED941
R951
R952
LED951
R971
R972
LED952
LED
953
IC901
RE901
4-8. SCHEMATIC DIAGRAM – KEY SECTION –
(Page 19)
CDX-GT180/GT280/GT280S/GT285S
23
• IC Block Diagrams
IC750 TDA8588AJ/N2/R1 (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-GT180/GT280/GT280S/GT285S
24
IC1 TEF6607T/V3/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
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