CDX-A251C - Sony Car Audio Service Manual (repair manual). Page 29

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29
29
CDX-A251C
CDX-A251C
3-13. PRINTED WIRING BOARDS — KEY SECTION —  • Refer to page 16 for Circuit Boards Location.
 : Uses unleaded solder.
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
8
9
10
11
12
13
14
1-868-120-
(21)
21
1-868-121-
(21)
21
1-868-121-
(21)
21
1-868-120-
(21)
21
AUX
6/PAUSE
SENS
4/SHUF
MODE
DSPL/DIM
SOURCE
5
CAT/BTM
PTY
BTM
LED901,S901
LCD BACK
LIGHT
LED931,932
B
MAIN BOARD
CN701
BLK
R
3
4
1
2
GND
L
BRN
BLU
R
L
2
3
1
4
5
GND
RE901
(VOLUME/PUSH DIAL SELECT)
BLU
BRN
BLK
LED951
(DISC-R)
1/GP/ALBM –
LSW918
2/GP/ALBM +
LSW917
LED952
(DISC-L)
SEEK –
. m
LED904,S904
SEEK +
M >
LED906,S906
LED902,S902
OFF
LSW913
LSW912
LED903,S903
EQ3
LED909,S909
LED941-946
(RING ILLUMINATION)
LSW915
LSW914
LED907,S907
LED908,S908
LSW911
AF/TA
(US,CND,E,MX)
(AEP,UK)
(AEP,UK)
(US,CND)
(E,MX)
SCRL
LSW910
3/REP
LSW916
SENS/BTM
(US,CND,E,MX)
(AEP,UK)
LIQUID CRYSTAL DISPLAY PANEL
56
29
1
28
LED902
S902
LED952
R955
R960
R959
R909
R963
IC971
R957
R910
R958
S901
LED932
LED931
LED901
LED951
R961
R962
S904
S903
R965
R967
R966
R968
R964
S907
S909
LED903
LED904
LED909
LED945
R993
R991
S908
S906
LED906
LED907
LED908
LED941
LED942
LED943
R997
R995
R996
R994
LED944
LED946
R971
R989
R970
R992
R990
R969
LSW918
LSW915
LSW917
LSW914
LSW916
LSW913
LSW912
LSW911
LSW910
R901
R972
C971
R979
R981
R982
D981
C981
R984
R985
R986
C983
C984
C985
D982
R931
R932
R933
R934
Q931
D903
R974
CN901
R976
IC901
R906
R907
R911
R977
R978
R987
R902
R903
R904
R915
R912
R916
R914
R913
R908
D901
R905
Q902
Q903
R953
R956
R954
R941
R942
R943
R944
R945
R946
R948
R947
R949
R952
R951
R950
R920
D902
R935
LCD901
FB901
FB902
FB903
J901
RE901
(Page 24)
(        ): SIDE B
Ref. No.
Location
• Semiconductor Location
(D901)
H-11
(D902)
H-11
(D903)
H-10
(D981)
H-8
(D982)
H-8
(IC901)
H-9
IC971
D-4
LED901
A-13
LED902
A-2
LED903
D-6
LED904
B-6
LED906
B-8
LED907
D-9
LED908
C-9
LED909
C-6
Ref. No.
Location
LED931
C-13
LED932
B-13
LED941
B-8
LED942
C-8
LED943
D-8
LED944
D-7
LED945
C-6
LED946
B-7
Ref. No.
Location
LED951
A-12
LED952
A-2
(Q902)
H-6
(Q903)
H-6
(Q931)
H-13
Ref. No.
Location
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