Sony CDX-GT420IP / CDX-GT42IPW / CDX-GT44IP Service Manual ▷ View online
29
29
CDX-GT42IPW/GT44IP/GT420IP
CDX-GT42IPW/GT44IP/GT420IP
5-9. SCHEMATIC DIAGRAM — ATMEL SECTION —
• Refer to page 22 for Waveforms.
• Refer to page 35 for IC Block Diagrams.
• Refer to page 35 for IC Block Diagrams.
(Page 26)
IC B/D
R256
R257
R259
R260
R261
R262
R263
R264
R265
R266
R267
R268
R288
R255
R253
R250
CN261
C253
C255
C256
CN260
R270
R292
R254
R252
X250
C252
C251
C250
R251
C254
Q258
D255
D250
IC250
30
30
CDX-GT42IPW/GT44IP/GT420IP
CDX-GT42IPW/GT44IP/GT420IP
5-10. 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
LED943
LSW904
IC971
S902
LED931
S904
LSW902
LSW906
S903
S901
LSW901
LED942
LED953
LED951
LED952
LED944
LED945
LED941
R975
C971
4
3
1
2
LSW903
R943
R948
R944
R905
LSW908
R946
R945
R902
LSW909
LCD901
LIQUID CRYSTAL DISPLAY PANEL
LSW910
R901
LSW911
LSW905
LSW907
R979
R978
R977
R982
C986
R974
C983
D982
C984
R986
R985
R984
D981
R981
R987
C981
FB903
D993
R933
R931
R932
R903
Q932
R972
R904
R907
R947 R908
R909
D992
R913
R949
R912
R911
R914
R952
R950
D991
D994
R951
IC901
R910
CN901
R971
Q931
R934
R942
R941
R992
R953
R954
R915
D903
J901
RE901
B
MAIN BOARD CN370
OFF
EQ3
LSW901
LSW904
.m
SEEK–
M >
SEEK+
LSW903
DSPL/
SCRL
LED951–953
(RING ILLUMINATION)
3/REP
4/SHUF
LSW909
LSW908
LSW907
LSW905
BTM/CAT
(GT42IPW)
(GT44IP)
(GT420IP)
AF/TA/PTY
BTM
2/ALBUM+
LSW906
1/ALBUM–
5
6/PAUSE
LSW911
LSW910
1-874-380-
1-874-380-
(11)
11
(11)
11
PUSH SELECT
(VOLUME)
RE901
LED941,
S901
AUX
J901
Z
LED942,
S902
LSW902
SOURCE
LED944,
S903
LED931
(LCD BACK LIGHT)
1
2
3
4
5
MODE
LED945,
S904
IC971
(Page 23)
IC901
G-8
IC971
D-13
LED931
C-13
LED941
A-13
LED942
A-1
LED944
B-4
Ref. No.
Location
D903
G-11
D981
G-10
D982
G-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-2
Q931
G-10
Q932
G-10
Ref. No.
Location
31
31
CDX-GT42IPW/GT44IP/GT420IP
CDX-GT42IPW/GT44IP/GT420IP
R901
R902
R903
R904
R907
R908
R909
R911
R910
R912
R913
R914
R915
R981
R982
D
982
R992
CN901
R943
R944
R932
R934
R933
R931
R949
R950
R954
R971
R972
R945
R946
R951
R952
R953
R948
R947
R975
R974
R941
R942
D981
D
994
D
991
D
992
D
993
R977
R979
R978
FB903
S901
S902
S903
S904
C971
C981
C986
R984
R985
R986
C984
C983
R987
LED951
LED952
LED953
LED945
LED944
LED941
LED943
LED942
IC901
Q931
Q932
LSW901(2/2)
LSW902(2/2)
LSW903(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)
LSW
901(1/2)
LSW
902(1/2)
LSW
903(1/2)
LSW
904(1/2)
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)
LCD901
R905
RE901
J901
LED931
903
IC971
5-11. SCHEMATIC DIAGRAM — KEY SECTION —
(Page 27)
32
32
CDX-GT42IPW/GT44IP/GT420IP
CDX-GT42IPW/GT44IP/GT420IP
• IC Block Diagrams
IC401 BD3442FS-E2 (MAIN Board (2/4))
IC300 TDA8588AJ/N2/R1 (MAIN Board (1/4))
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
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
IC601 BA8271F-E2 (MAIN Board (1/4))
1
2
3
4
5
5
6
7
8
9
10
14
13
12
11
BUS ON
SWITCH
RESET
SWITCH
BATTERY
SWITCH
BUS ON
RST
BATT
CLK
VREF
GND
VCC
RESET
BUS ON
BUS ON
CLK IN
BU IN
DATA IN
DATA OUT
DATA
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