Sony CDX-GT170 / CDX-GT170S / CDX-GT270 / CDX-GT270S (serv.man2) Service Manual ▷ View online
9
9
CDX-GT170/GT170S/GT270/GT270S
CDX-GT170/GT170S/GT270/GT270S
1-5. SCHEMATIC DIAGRAM — MAIN SECTION (4/4) —
R633
R632
R631
R634
R583
C623
CN701
R153
R151
R152
C155
C154
R155
JW140
C622
R584
C631
C519
R601
C151
C152
C153
R540
R541
JC681
Q582
R585
Q581
L151
R154
IC602
Q631
Q580
FB604
D580
R582
D581
D704
D719
JW52
D609
D153
C157
(Page 6)
(Page 7)
(Page 8)
(Page 11)
Ver. 1.2
10
10
CDX-GT170/GT170S/GT270/GT270S
CDX-GT170/GT170S/GT270/GT270S
1-6. PRINTED WIRING BOARD — KEY SECTION —
: Uses unleaded solder.
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
37
LIQUID CRYSTAL DISPLAY PANEL
IC971
GT270/GT270S
OFF
EQ3
LSW901
LSW904
.m
SEEK–
M >
SEEK+
LSW903
DSPL/SCRL
LED951–953
(RING ILLUMINATION)
3/REP
4/SHUF
LSW909
LSW908
LSW907
LSW905
BTM
2/ALBUM+
LSW906
(GT270/GT270S)
(GT270/GT270S)
1/ALBUM–
1
(GT170/GT170S)
(GT170/GT170S)
2
5
6/PAUSE
LSW911
LSW910
1-874-378-
1-874-378-
(21)
21
(21)
21
PUSH SELECT
(VOLUME)
RE901
LED941,
S901
AUX
J901
Z
LED942,
S902
LED943
S902
LED931
S903
S901
LED942
LED953
LED951
LED952
LED944
LED945
R975
C971
1
2
4
3
R943
R948
R944
R905
R946
LCD901
R945
R902
R901
IC971
LSW910
LSW909
LSW908
LSW907
LSW906
LSW905
LSW903
LSW902
LSW902
DSPL
(GT270/GT270S)
(GT170/GT170S)
SOURCE
LED944,
S903
LSW904
LSW901
S904
LED941
LSW911
LED931
(LCD BACK LIGHT)
R979
R978
R977
R982
C986
R974
C983
D982
C984
R986
R985
R984
D981
R981
R987
C981
FB903
D993
R933
R931
GT270/GT270S
GT270/GT270S
R932
R903
Q932
R972
R904
R907
R947 R908
R909
D998
R913
R949
R912
R911
R914
R952
R950
D991
D994
R951
IC901
R910
CN901
R971
C987
R988
Q931
R934
R942
R941
R992
R953
R954
R915
D903
D992
RE901
1
2
3
4
5
MODE
LED945,
S904
(Page 5)
IC901
G-8
IC971
D-14
LED931
C-13
LED941
B-13
LED942
A-1
LED944
B-4
Ref. No.
Location
D903
G-11
D981
H-10
D982
H-10
D991
G-11
D992
G-11
D993
G-11
D994
F-14
• Semiconductor Location
Ref. No.
Location
LED945
C-4
LED951
B-3
LED952
C-4
LED953
C-3
Q931
G-10
Q932
G-10
Ref. No.
Location
11
11
CDX-GT170/GT170S/GT270/GT270S
CDX-GT170/GT170S/GT270/GT270S
R981
R982
R931
R932
R933
R902
R903
R913
R911
R910
R909
R908
R978
R905
R914
R915
R901
R907
R912
CN901
R904
R977
R979
C986
C987
C981
R987
C983
C984
R984
R985
R986
R988
Q932
LCD901
S901
S902
S903
LSW
901(1/2)
LSW
902(1/2)
LSW
903(1/2)
LSW
904(1/2)
S904
LSW
905(1/2)
LSW
906(1/2)
LSW
907(1/2)
LSW
908(1/2)
LSW
909(1/2)
LSW
910(1/2)
LSW
911(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
LED942
LED944
LED945
LED952
LED953
R941
R942
LED943
LED931
Q931
R934
D998
R992
R943
R944
R945
R946
R947
R948
R949
R950
R951
R952
R953
R954
LED951
R971
R972
IC971
C971
R975
IC901
D981
D982
R974
D994
D991
D992
D993
D903
RE901
FB903
1-7. SCHEMATIC DIAGRAM — KEY SECTION —
(Page 9)
12
12
CDX-GT170/GT170S/GT270/GT270S
CDX-GT170/GT170S/GT270/GT270S
• IC Block Diagrams
IC401 BD3442FS-E2 (MAIN Board (1/4))
IC750 TDA8588BJ/N2/R1 (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
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