Sony MEX-BT2500 Service Manual ▷ View online
MEX-BT2500
29
29
MEX-BT2500
C410
C411
L451
2.2
µH
JC29
JC30
C301
JC31
C325
C304
C330
C305
C307
C306
C308
C309
C303
Q582
R585
Q581
Q580
D581
R583
D580
R582
C458
C457
JC15
FB458
FB457
FB456
C460
C461
FB455
FB454
CN350
C456
C455
FB453
R452
FB451
R451
FB452
R453
C454
C453
C451
C452
D707
R705
R709
D702
D703
C705
D705
C706
R706
C702
C703
R707 R708
C701
C704
C315
C313
C320
C312
C317
D312
D311
D310
D309
D308
D307
D306
D305
D303
R554
JC2
JC12
R679
D451
R491
D491
Q491
JC9
C491
D493
R528
JC1
Q492
C521
R531
L301 2.2
µH
JC13
C318
R301
C319
R302
CN300
C314
C316
D301
IC300
R455
D452
R584
R454
Q702
F301
IC602
C520
L700
1 50V
1 50V
0
0
0.22
0
0.22
0.22
0.22
0.1
0.1
10
50V
10
50V
0.22
22
16V
2SC3052EF
220k
RT1N441C
RT1N141C
MA8180M
1k
MA8075M
1k
0.01
22 16V
0
0
0
0
10 16V
0.01
0
0
28P
100
10V
0.01
0
1k
0
1k
0
100k
0.0022
0.0022
100
10V
10V
0.01
1N5404-C311-3
4.7k
1k
MA8180M
MA8068M
0.01
MA8180M
0.001
47k
0.47
0.47
47k
4.7k
3300
16V
0.22
0.1
0.1
0.01
0.22
2.2
50V
50V
10EDB40
10EDB40
10EDB40
10EDB40
10EDB40
10EDB40
10EDB40
10EDB40
10EDB40
1k
0
0
100
BAT54CLT1G
47
1SS355
RT1P141C
0
47
16V
MC2838
100k
0
RT1N141C
1000
6.3V
6.3V
100k
0
47p
150
0.22
47k
16P
10
50V
10
50V
10EDB40
TDA8588BJ
1k
BAT54ALT1G
47k
100k
2SC3052EF
10A
32V
32V
PST3428UL
1000
6.3V
6.3V
SGND
SYSRST
CDMON
CDON
BUSON
DGND
+8.3V
+3.3V
UNISI
Z-MUTE
A
B
IN-FL
IN-FR
+8.3
IN-RR
IN-RL
SGND
+B
B+
CD-LCH
CD-RCH
C
SDA
SCL
BUIN
UNI_CLK
UNI_SI
UNI_SO
RST
TEST
ACC
STB
BEEP
DIAG
ATT
RST
RL+
RL+
RL-
RL-
FL+
FL+
FL-
FL-
FR+
FR+
FR-
FR-
RR+
RR+
RR-
RR-
(1/3)
POWER AMP,
REGULATOR
RESET SIGNAL GENERATOR
Q491,492
MUTNG CONTROL
BATT
BATT
GND
AMT REM
AMT REM
GND
ACC
ACC
FRONT LCH-
FRONT LCH+
REAR LCH+
REAR LCH-
REAR RCH+
REAR RCH-
FRONT RCH+
FRONT RCH-
ACC
BATT
GND
ANT REM MAX0.1A
(AEP,UK)
Q580-582
VOLTAGE DETECT
TEL ATTENATION
DETECT
DECK BLOCK
CD MECHANISM
(MG-101TA-188)
0
(US,CND,E)
VOUT
VDD
VSS
NC
LINK_OFF
UNICLK
UNISI
UNISO
D_GND
D_3.3V
Z-MUTE
NC
NC
BU_GND
BU_3.3V
SYS_RST
DR_GND
DR_6V
BUS_ON
B/U_CHECK
OPEN_REQ
EJECT_OK
A_3.3V
A_GND
AU_RCH
AU_GND
AU_LCH
A-ATT
CDM-ON
CD-ON
DR_GND
DR_6V
TA
B
OU
T-FL
-
O
U
T-FL
+
O
U
T
-R
L
-
O
U
T-RL
+
IN
-R
L
S
-G
N
D
IN
-R
R
O
U
T
-RR
+
O
U
T-R
R
-
O
U
T-FR
+
O
U
T-FR
-
D
IAG
A
M
P
-R
E
M
SE
R
V
O3
.3V
M
EC
H6V
V
P
B
U
+B
S
D
A
S
C
L
V
P2
P
G
N
D1
S
VR
IN
-F
L
IN
-FR
BE
EP
P
G
ND
3
V
P
1
STB
PG
N
D
4
R
ST
C
RE
S
A
U
D
IO
+B
GN
D
P
AN
EL
+B
C
B
U
A
N
T-R
E
M
SENSOR BOARD
SERVO BOARD
(Page 31)
5-2. SCHEMATIC DIAGRAM – MAIN Section (1/3) –
•
See page 34 for IC Block Diagrams.
Ref. No. Location
Ref. No. Location
D2
E-2
D103
H-3
D104
H-3
D108
H-4
D301
C-8
D303
C-8
D305
C-5
•
Semiconductor Location
– MAIN Section –
Ref. No. Location
Ref. No. Location
Ref. No. Location
D306
C-5
D307
C-6
D308
C-6
D309
B-6
D310
B-6
D311
C-7
D312
C-6
D451
E-8
D452
F-7
D491
D-4
D493
D-5
D502
H-5
D503
H-5
D580
D-9
D581
D-9
D602
H-2
D702
C-7
D703
C-8
D705
B-8
D707
C-9
D800
E-10
IC901
G-2
Q1
D-2
Q3
E-2
Q50
G-2
Q410
B-3
Q420
B-3
Ref. No. Location
Ref. No. Location
Q430
A-4
Q440
B-3
Q491
D-4
Q492
D-4
Q500
H-5
Q580
D-9
Q581
D-9
D801
F-9
IC50
F-2
IC300
B-6
IC401
C-3
IC501
G-5
IC602
F-7
Ref. No. Location
Q582
D-9
Q702
C-8
Q802
D-9
Q803
D-9
Q804
F-9
Q805
F-9
Q806
D-9
Ref. No. Location
Q807
D-10
Q808
D-10
(Page 30)
MEX-BT2500
30
30
MEX-BT2500
5-3. SCHEMATIC DIAGRAM – MAIN Section (2/3) –
•
See page 34 for Waveforms.
•
See page 36 for IC Pin Function Description.
C508
C507
C513
R521
R
5
4
4
R522
R502
C512
R
5
5
7
C510
R
51
1
R
5
10
R5
1
2
R
5
7
0
R
5
32
R
5
3
4
C514
C519
R563
R
5
33
R
5
2
9
R
5
6
9
R558
R567
R565
R
56
1
R517
C509
R503
R509
R556
R540
R524
R525
R526
R520
R523
L501
2.2
µH
R566
R800
R801
C800
C827
C828
C841
Q802
Q803
C840
Q805
Q806
R811
R810
Q807
D800
D801
Q808
R505
R504
R506
D
5
0
2
R
51
9
R
5
4
3
JC
8
0
R
5
3
6
JC
5
6
C889
JC50
JC55
JC27
J
C
1
4
JC
1
1
FB800
CN805
CN804
C504
C501
C515
C516
D503
R832
R831
Q804
C511
C503
C801
C887
R836
R
8
3
4
R
8
3
5
R837
R838
R839
R840
R841
R842
R843
R844
R845
R846
R
8
3
3
R542
R541
X501
S103
Q500
R547
R548
JC
5
3
X502
IC501
R507
R537
R573
R538
R550
R546
R545
JC38
R552
R551
S501
JC4
R1
CN1
MIC201
15p
15p
0.01
2.2k
1
k
2.2k
100
0.001
2
.2
k
1
1
k
1
k
1k
4
7
0
1
0
0
k
1
0
k
0.001
0.1
100k
1
0
0
k
1
k
1
0k
100k
100k
100k
1
0
0
k
47k
0.022
100
100
100k
100k
10k
10k
100k
100
100
100k
1k
1k
0.01
0.01
47
16V
1 50V
RT1N140C
RT1N140C
1 50V
RT1N141C
2SB1690K
1k
470
RT1N441C
RB705D
BAT54AL
RT1N441C
10k
10k
0
R
B
7
5
1
V
1
00
k
0
0
10
k
0
0
0
0
0
0
0
0
12P
12P
0.01
0.01
0.01
0.01
1SS355
100k
100k
RT1P141C
100
10V
100
10V
10V
100
10V
10V
0
100
1
0
0
1
0
0
100
100
100
100
100
100
100
100
100
100
1
0
0
100k
100k
18.432MHz
RT1P141C
100k
100k
100k
100k
100k
100k
100k
100k
100k
0
100k
100k
0
0
Z-MUTE
UNISI
+3.3V
DGND
+8.3V
+3.3V
DGND
RDS_ON
SYSRST
CDON
CDMON
BUSON
SGND
A
B
C
D
E
F
TU-ATT
NS-MASK
DIAG
BEEP
L_CE
L_DA
L_CLK
UNI_CLK
UNI_SO
UNI_SI
BUIN
DAVN
TU_ATTIN
KEY0
KEY1
E2PSCL
E2PSIO
NOSESW
RE1
RE0
STB
RST
BT_RST
BT_ON
BT_OP
BT_MF
ATT
ACC
TEST
BT_ON
BT_OP
BT_MF
BT_RST
BT_INT
BT_AUDIO_L
BT_AUDIO_R
SIRCS
RST
RST
VOLATT
SDA
SCL
VSM
QUALITY
BT_FF
BT_FR
BT_TE2
BT_TE1
BT_MU
BT_ST3
BT_ST2
BT_ST1
BT_ST0
BT_PL
BT_INT
BT_PL
BT_ST0
BT_ST1
BT_ST2
BT_ST3
BT_MU
BT_TE1
BT_TE2
BT_FR
BT_FF
BT_TEST1(AIO1)
BT_TEST2(AIO3)
BT_STATUS0(PIO3)
BT_STATUS1(PIO5)
BT_STATUS2(PIO6)
BT_STATUS3(PIO7)
BT_MUTE(PIO11)
BT_PLAY(PIO0)
BT_FR(PIO1)
BT_FF(PIO2)
BT_INT-HF(PIO9)
GND
BT_POW_ON(PIO10)
BT_OPRPOW(PIO8)
BT_MFUNK(PIO4)
BT_RESET
GND
VSM
KEYIN1
KEYIN0
SIRC
S
R
ESET
BEEP
SYSRST
DAVSS
DAVDD
OSCIN
OSCOUT
XIN
XOU
T
BUIN
KE
YACK
I2C_SIO
NCO
VSS1
AM
PSTB
N
CO
NCO
DA
VN
TUA
TT
IN
N
SM
ASK
QUALITY
DIAG
NOSESW
VO
LA
TT
TUATT
CDMON
CDON
UNISO
U
NISI
AREASEL1
VCC3
MD2
MD1
MD0
VSS
AVRH
VCC5
N
CO
VS
S
N
CO
N
CO
RD
S_ON
UN
ISCK
NC
O
N
CO
N
CO
ILLUM
I_SEL
N
CO
N
CO
EEP_SIO
EEP_
CKO
N
CO
RE-IN0
RE-IN1
NCO
NCO
NCO
Z-M
UTE
FLA
SH
_W
DEMOSEL
NCO
BUSON
TESTIN
TELATT
ACCIN
ATT
I2C_SCK
AD_ON
AR
EASEL0
AR
EAS
EL2
B-OU
T SEL
B
T_TEST1
BT_TES
T2
BT_S
TATUS
0
BT_STATUS
1
BT_STA
TUS2
BT_STAT
US3
BT_M
UTE
BT_PLAY
BT_FR
BT_FF
BT_INT-HF
BT_POWER_CTRL
BT_STATUS_POW
BT_OPRPOW
BT_MFUNC
BT_RESET
LCD_CE
LCD_SO
LCD_CKO
NCO
NCO
NCO
N
CO
CYRIL_SEL
GND
VDD_3.3V
VCC_8.3V
A-GND
BT_AUDIO_L
A-GND
BT_AUDIO_R
(2/3)
(CHASSIS)
KEY ACTIVE
SWITCH
1
00k
(US,CND,E)
RESET
32.768kHz
SYSTEM CONTROLLER
MB90F045PF-G-9044-SPE1
SELECT
FREQUENCY
10k
9k
(E)
(US,CND,E)
(AEP,UK,E)
(AEP,UK)
(US,CND)
Q802,803
MUTING
Q804,805
MUTING CONTROL
Q806-808
B+ SWITCH
(PATTERN ANTENNA)
BT BOARD
N
CO
(US,CND,AEP,UK)
(Page 29)
(Page 31)
Note: When the BT board is replaced, it is necessary to confirm
operation.
Refer to “BLUETOOTH FUNCTION CHECKING METHOD
USING A CELLULAR PHONE” of the servicing note (See
page 5).
Refer to “BLUETOOTH FUNCTION CHECKING METHOD
USING A CELLULAR PHONE” of the servicing note (See
page 5).
MEX-BT2500
31
31
MEX-BT2500
5-4. SCHEMATIC DIAGRAM – MAIN Section (3/3) –
•
See page 34 for IC Block Diagrams.
Q3
C3
C6
R2
R3
R10
C2
C7
R4
R5
C8
C5
D2
R9
C423
C414
C431
C442
R440
R
420
R410
R
430
R423
R412
C421
C424
C415
C432
C443
D108
IC901
R614
D602
R612
R604
R605
C602
C603
D103
R431
R441
C430
C441
Q430
Q440
R432
R442
C404
C405
C418
R422
C422
R411
C413
D104
C600
C601
JC26
JC25
CN701
C406
C407
Q420
Q410
IC401
C419
R610
R609
R608
R607
R613
R603
R602
JC5
J1
TU1
R1
C4
R8
L1
2.2
µ
H
R12
R13
L4
R6
R7
C1
R617
R615
C605
Q50
R54
R55
L50
2.2
µ
H
C58
R57
C61
C62
C59
C60
R59
X50
IC50
R56
C50
R50
C51
C52
C53
R53
R52
C55
C56
C54
R51
C57
JW8
JC10
C604
Q1
L51
L52
2SC6027
0.01
0.01
33k
68k
1k
47
16V
0.01
33k
68k
0.01
47
16V
MA8056M
68k
1
1
1
1
100
100
100
100
10k
10k
10
50V
1
1
1
1
MA8180M
NJM12902V
100k
MA8068-M
2.2k
1k
1k
0.0047
0.0047
MA8068M
1k
1k
10
16V
10
16V
RT1N140C
RT1N140C
10k
10k
1 50V
1 50V
220
10V
10V
1k
10
50V
1k
10
50V
MA8068M
1
1
0
0
15P
0.22
0.22
RT1N140C
RT1N140C
BD3444FS
0.01
12k
12k
470
470
2.2k
47k
47k
0
100
0.1
33k
4.7
50V
0
2.2
0.01
2SA1235TP-1EF
10k
1k
330p
0
15p
15p
100p
100p
220
8.664MHz
TDA7333013TR
10k
0.1
10
0.1
0.1
0.1
100k
0.1
0.1
0.1
10
47 16V
0
2.2
50V
50V
RT1N441C-TP-1
100
100
IN-FL
IN-FR
+8.3
IN-RR
IN-RL
SGND
+B
B+
CD-LCH
CD-RCH
+3.3V
DGND
RDS_ON
C
C
D
E
F
E2PSIO
E2PSCL
QUALITY
NS-MASK
TU-ATT
TU_ATTIN
KEY1
KEY0
L_CE
L_CLK
L_DA
SCL
SDA
RE0
RE1
AUX-RCH
AUX-LCH
NOSESW
AUX-LCH
AUX-RCH
SIRCS
BT_AUDIO_L
BT_AUDIO_R
VOLATT
SCL
SDA
DAVN
SCL
SDA
VSM
KEY-1
KEY-0
CE-LCD
DATA-LCD
CLK-LCD
PANEL
+B
RE-1
D-GND
AUX-RCH
AUX-LCH
RE-0
AUX-GND
KEY-GND
SIRCS
(3/3)
(ANTENNA IN)
(TUNER UNIT)
(CHASSIS)
LINE AMP
NS DET
DISCHARGE
SWITCH
(AEP,UK)
(AEP,UK)
(US,CND,E)
MUTING
Q410,420,430,40
+5V
REGULATOR
B+ SWITCH
ELECTRICAL VOLUME,INPUT SELECT
RDS DECODER
(AEP,UK)
ANT
GND
R
L
QUALITY
S-METER
TUN_MUTE
MUTE_CON
RDS_OUT
VDD5V
GND
SCL
SDA
E2PVDD
E2PSCL
E2PSDA
VCC8.3V
BUS-RCH
BUS-LCH
TU-RCH
TU-LCH
CD-RCH
CD-LCH
AUX-RCH
DN1
DN2
AUX-LCH
OUT-RL
OUT-RR
OUT-FL
VCC
MUTE
GND
SDA
SCL
FIL
OUT-FR
XTI
XTO
SCL
SDA
SA
CSN
INTN
MPX
VDDA
REF3
REF2
REF1
VSS
TM
VDDD
RESETN
TUX-032//Q(US,CND,AEP,UK)
TUX-032//Q2(E)
(Page 29)
(Page 30)
(Page 33)
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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