Read Sony MEX-BT2500 Service Manual online
MEX-BT2500
32
32
MEX-BT2500
: Uses unleaded solder.
5-5. PRINTED WIRING BOARD – KEY Board –
•
See page 27 for Circuit Boards Location.
R916
IC971
C971
R975
LSW908
LSW909
LSW910
LSW911
S901
LED941
LED942
LED931
R953
R942
R903
R902
R909
R910
LSW905
LSW906
LSW907
LSW904
LSW901
LSW902
S902
S904
LED945
LED952
LED953
R908
R945
R946
R948
R943
R944
R905
LED943
LSW903
S903
R907
LED944
LED951
R947
R961
R962
LSW912
R984
R986
R941
FB901
J901
CN901
R911
R912
R913
R914
R915
D903
R974
R931
R932
R933
FB903
FB902
C987
R981
R982
D981
C985
C986
R987
R984
R985
C983
C984
R934
Q932
IC901
C981
R954
R950
R951
R952
R977
R978
R979
R988
D982
D991
D992
D993
D994
Q931
D988
D987
D990
D989
C988
R992
R921
R922
R901
R904
R923
R949
D998
FB901
LCD901
RE901
KEY BOARD
(COMPONENT SIDE)
1-871-017-
21
(21)
OFF
LED943, S902
MODE
LED945, S904
BTM
PTY
K
A
K
A
K
K1
A1
S1
K2
A2
S2
A
K
A
K
A
K
A
K
A
K
A
1
2
4
3
K1
A1
S1
K2
A2
S2
K1
A1
S1
K2
A2
S2
K1
A1
S1
K2
A2
S2
LSW901
BLUETOOTH
EQ
LSW904
SEEK–
. m
LSW903
SEEK+
M >
LED941 – 945,
LED951 – 953
LED951 – 953
A
K
S901 – 904
LSW901 – 912
SOURCE
LED944, S903
PUSH SELECT/
(VOL)
LED951 – 953
ALBM –
1
ALBM +
2
REP
3
SHUF
4
PAUSE
6
5
DIM
DSPL
(AEP, UK)
(US, CND, E)
SCRL
AF/TA
(AEP, UK)
(US, CND, E)
K1
A1
S1
K2
A2
S2
K1
A1
S1
K2
A2
S2
K1
S1
A1
K2
S2
A2
K1
A1
S1
K2
A2
S2
K1
A1
S1
K2
A2
S2
K1
A1
S1
K2
A2
S2
K1
A1
S1
K2
A2
S2
K1
A1
S1
K2
A2
S2
K1
A1
S1
K2
A2
S2
(DISC SLOT ILLUMINATION)
(LCD BACK LIGHT)
Z
LED941, S901
PUSH SELECT/
(VOLUME)
RE901
LIQUID CRYSTAL DISPLAY
KEY BOARD
(CONDUCTOR SIDE)
1-871-017-
21
(21)
ROTARY ENCODER
A
MAIN BOARD
CN701
1
2
5
3
4
AUX
1
37
A
B
C
D
E
F
1
2
3
4
5
6
7
8
9
10
11
(Page 28)
D991
E-7
D992
E-7
D993
E-7
D994
E-10
IC901
E-6
IC971
C-10
Ref. No. Location
Ref. No. Location
D903
E-9
D981
F-8
D982
F-8
D987
E-9
D988
E-9
D989
E-9
D990
E-9
•
Semiconductor Location
Ref. No. Location
Ref. No. Location
LED931
B-10
LED941
A-11
LED942
B-6
LED943
A-1
LED944
B-4
LED945
C-4
LED951
B-3
LED952
B-3
LED953
B-2
Q931
E-5
Q932
E-5
Note: Refer to the Servicing Notes “NOTE FOR REPLACEMENT
OF THE AUX JACK (J901)” (page 5), if replacing the Ref. No.
J901.
J901.
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