Sony CDX-GT272 Service Manual ▷ View online
CDX-GT272
CDX-GT272
21
21
5-5. SCHEMATIC DIAGRAM – MAIN Section (2/4) –
• See page 26 for IC Block Diagrams.
IC B/D
C479
C602
C618
C617
C432
C452
C442
C462
C755
C751
JC753
C771
C769
C764
C765
C750
JC754
JC755
C775
C774
C435
C455
C445
C465
JW111
C601
R479
C753
R752
C758
C754
C756
Q478
Q479
C776
CN601
FU601
C763
C770
D479
L601
D617
IC750
D751
D752
D753
D754
D755
D756
D757
D758
D759
D760
D76
1
D762
D601
(Page 20)
(Page 22)
(Page 23)
CDX-GT272
CDX-GT272
22
22
R636
R671
R673
R510
C343
R674
R570
C306
C310
C309
C312
C508
C507
R513
R514
C504
R534
R557
R532
C510
D511
C513
R505
R504
C509
R563
R544
R568
C516
C501
R565
C550
R506
JC510
R578
C522
R690
R542
R547
R756
R503
R502
R502
R533
R531
R517
R558
R556
R519
R566
R539
R675
R676
R676
C305
C308
C302
C301
R528
R529
R672
C511
R509
R507
R537
C503
R512
R511
C512
R567
C514
R561
R543
JC504
C523
R663
R661
R522
R521
R662
R664
Q664
R302
R301
CNP301
X501
D510
X502
D512
D502
R679
D503
R549
R548
R574
R526
R677
R524
R524
R572
R527
R527
IC501
JC533
R692
R536
R535
5-6. SCHEMATIC DIAGRAM – MAIN Section (3/4) –
• See page 18 for waveforms. • See page 27 for IC Pin Function Description of IC501.
(Page 20)
(Page 21)
(Page 23)
CDX-GT272
CDX-GT272
23
23
R633
R632
R631
R634
R583
C623
CN701
R153
R151
R152
C155
C154
R155
JW140
C622
C631
C519
R601
C151
C152
C153
L151
R154
Q631
FB604
D719
D704
D581
D153
R540
R541
Q582
Q581
R584
R585
Q580
D580
R582
JC681
IC602
C157
XC61CN2802NR
5-7. SCHEMATIC DIAGRAM – MAIN Section (4/4) –
(Page 21)
(Page 20)
(Page 25)
(Page 22)
CDX-GT272
CDX-GT272
24
24
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
S902
LED931
S90
3
S901
LED942
C971
R905
R902
IC971
LSW902
LSW901
S904
LED941
LSW904
1
LSW905
LSW906
LSW907
LSW908
LSW909
LSW910
LSW903
LED951
LED953
LED954
R904
R901
LED952
R975
D994
FB903
FB901
R941
R942
FB902
R97
4
D993
R933
R931
R932
D991
D903
D992
D901
CN901
Q931
Q932
R981
R934
R982
D981
R987
R979
R910
R911
R951
R952
R950
R912
R913
D998
R978
R977
C986
D982
R985
R984
R988
C98
4
C981
C983
C987
R986
IC901
R908
R909
R949
R948
R947
R992
R907
R945
R946
R906
R922
R921
R961
R962
R962
R963
R964
R944
R943
R903
D902
C901
FB904
J901
RE901
3
4
5
2
1
RE901
PUSH SELECT
(VOLUME)
LED941,
S901
LCD901
LIQUID CRYSTAL DISPLAY PANEL
LED931
(LCD BACK LIGHT)
EQ3
DSPL/SCRL
LSW910
LSW909
IC971
1-875-958- (11)
11
1
2
4
3
OFF
LSW901
SOURCE
S903
LSW902
SEEK–
SEEK+
LED951–953
(RING ILLUMINATION)
4/SHUF
6/PAUSE
LSW908
5
LSW907
LSW906
2/ALBUM+
LSW904
3/REP
LSW905
1/ALBUM–
LSW903
1-875-958- (11)
11
;
LED942,
S902
S904
MODE
J901
AUX
37
C988
5-8. PRINTED WIRING BOARD – KEY Section –
•
: Uses unleaded solder.
(Page 19)
Ref. No. Location
• Semiconductor Location
D901
G-11
D902
G-12
D903
G-11
D981
H-10
D982
H-10
D991
G-11
D992
G-11
D993
G-11
Ref. No. Location
D994
D994
C-14
IC901
G-7
IC971
D-14
LED931 C-13
LED941 A-14
LED942 A-1
LED941 A-14
LED942 A-1
LED951 B-4
LED952 C-5
LED953 B-3
LED954 C-3
Q931
G-10
Q932
G-10
Ref. No. Location
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