Read Sony MEX-BT2900 / MEX-BT2950 Service Manual online
MEX-BT2900/BT2950
MEX-BT2900/BT2950
26
26
5-5. PRINTED WIRING BOARD - KEY Board -
•
: Uses unleaded solder.
• See page 21 for Circuit Boards Location.
Note: Refer to the servicing notes “NOTE FOR REPLACEMENT OF
THE AUX JACK (J901)” (See page 5), if replacing the Ref. No.
J901.
J901.
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 CN403
IC902
IC901
A1
A2
K1
K2
S1
S2
LSW901 – 908
S901 – 907
LED940, 944–952, 955,
LED956, 960, 961, 995-998
A
K
S1
S2
S3
S4
LED931
A
K
1
52
LSW901
LSW902
LSW908
LCD901
LED940
LED944
LED945
LED946
LED947
LED948
LED949
LED950
LED951
LED998
LED952
LED955
LED960
LED956
LED961
LED995
(BT2900: US, CND)
(BT2900: AEP, UK)
(BT2950)
LED996
LED997
S901
S902
S903
S904
S905
S2
S1
S4
S2
S4
S2
S4
S4
S1
S3
S3
S1
S3
S1
S3
S4
S1
S3
S2
S4
A1
S1
A2
S2
K1
K2
A1
S1
A2
S2
K1
K2
A1
S1
A2
S2
K1
K2
LSW903
A1
S1
A2
S2
K1
K2
LSW904
A1
S1
A2
S2
K1
K2
LSW905
A1
S1
A2
S2
K1
K2
LSW906
A1
S1
A2
S2
K1
K2
LSW907
A1
S1
A2
K
K
A
A
S2
K1
K2
S2
S2
S1
S3
K
K
A
K
A
K
A
K
A
K
A
K
A
A
K
K
K
A
A
K
A
K
A
K
A
K
K
A
A
K
A
K
A
A
S4
S906
S907
R988
R989
1
16
17
32
33
48
49
64
1
2
14
15
D975
3
1
D982
D983
D985
D986
D991
D992
D993
D994
Q931
Q932
R1000
FB901
FB902
FB903
R901
R902
R903
R904
R905
R906
R907
R908
R910
R911
R912
R919
CN901
R920
R921
R931
R933
R934
R935
R936
R941
R942
R960
R961
R962
R963
R964
R965
R966
R968
R969
R970
R971
R972
R973
R974
R977
R978
R979
R980
R981
R982
R983
R987
R992
R993
R995
R996
R997
R998
R999
D903
C971
C981 C983
C984
C986
1-882-655-
(11)
11
1-882-655-
(11)
11
LED949-951, 955, 956, 960, 961, 995-997
(ILLUMINATION)
Z
SCRL
DSPL
ALBUM +
2
ALBUM –
1
m
.
SEEK –
LSW908
LSW907
PAUSE
6
LSW906
LSW905
SHUF
4
MIC
5
LSW904
REP
3
LSW903
LSW902
LSW901
CAT
PTY
PTY
PTY
AF/TA
PTY
LED944
(DISC SLOT INDICATOR)
LED945,S904
CALL
LED998,S902
OFF SOURCE
LED947,S903
LED946,S905
LED948,S901
BT
LED952,S906
SEEK +
>
M
MODE
LED940,S907
LED931
(LCD BACK LIGHT)
S909
ROTARY
ENCODER
S909
PUSH SELECT/
(VOLUME)
J901
AUX
IC902
LIQUID CRYSTAL DISPLAY PANEL
B C E
B C E
1
2
3
4
5
S2 S4
S1 S3
(Page 22)
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