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Model
MEX-BT4000E MEX-BT4000P MEX-BT4000U MEX-BT4050U MEX-BT4054U
Pages
58
Size
4.36 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
mex-bt4000e-mex-bt4000p-mex-bt4000u-mex-bt4050u-me.pdf
Date
PREV: Sony XS-MP1611 Service Manual

Sony MEX-BT4000E / MEX-BT4000P / MEX-BT4000U / MEX-BT4050U / MEX-BT4054U Service Manual ▷ View online

MEX-BT4000E/BT4000P/BT4000U/BT4050U/BT4054U
MEX-BT4000E/BT4000P/BT4000U/BT4050U/BT4054U
37
37
5-13.  SCHEMATIC  DIAGRAM - KEY Board -
• See page 38 for IC Block Diagrams.
Note: Refer to the servicing notes “NOTE FOR REPLACEMENT 
OF THE USB CONNECTOR (CN971) AND THE AUX 
JACK (J901)” on page 5, if replacing CN971 and J901.
A
(2/4)
MAIN
BOARD
CN102
IC B/D
2.6
2.6
2.6
2.6
2.6
2.6
2.6
4.9
3.3
1.7
2.6
2.6
0
3.2
2.9
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
4.9
4.7
820
R949
820
R956
1k
R957
1k
R958
1k
R951
1k
R950
1.2k
R952
1.2k
R959
1.5k
R953
1.8k
R954
1.8k
R961
2.2k
R955
2.2k
R962
0.47
C907
VCC
OUT
GND1
GND2
RS-470
IC902
1
2
3
4
100
R980
RT3CLLM
Q900
RT3CLLM
Q901
RT3CLLM
Q902
RT3CLLM
Q903
RT3CLLM
Q904
RT3CLLM
Q905
RT3CLLM
Q906
RT3CLLM
Q907
RT3CLLM
Q908
10k
R923
10k
R922
10k
R924
10k
R925
10k
R926
10k
R927
10k
R928
10k
R929
10k
R930
120
R942
39
R935
56
R933
J901
1
2
3
4
4P
CN971
20P
CN901
1
USB_GND
2
USB_VBUS
3
D-
4
D+
5
GND
6
KEY_GND
7
AUX_L
8
AUX_R
9
AUX_GND
10
RE_0
11
RE_1
12
KEY_1
13
KEY_0
14
SIRCS
15
LCD_DATA
16
LCD_CE
17
LCD_CLK
18
ILL(FP+B)
19
PANEL_SW
20
GND
RKZ6.8B2KGP1
D903
RKZ6.8B2KGP1
D904
RKZ6.8B2KGP1
D905
1000p
C900
56
R945
1M
R981
150
R976
150
R975
1k
R974
1000p
C911
0
R967
0
FB903
0
FB902
0
FB901
R970
27
R971
27
(RED)
(GRN)
(BLU)
SMLVN6RGB1U1
LED900
(RED)
(GRN)
(BLU)
SMLVN6RGB1U1
LED902
(RED)
(GRN)
(BLU)
SMLVN6RGB1U1
LED903
68
R931
68
R932
47
R934
82
R936
R900
120
R903
120
R905
120
68
R904
82
R906
150
R912
150
R913
R911
120
R914
120
68
R915
R916
120
82
R917
82
R943
82
R944
47
R946
39
R947
82
R948
LCD901
1
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
52
2
4
49
51
3
50
RKZ5.1B2KGP1
D981
470
R964
470
R966
470
R965
C914
18p
C913
18p
C912
18p
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
17
18
19
20
21
22
29
28
27
26
25
24
23
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
IC901
NCO
R
G
B
SEG48
SEG47
SEG46
SEG45
SEG44
SEG43
SEG42
SEG41
SEG40
SEG39
SEG38
SEG37
SEG36
SEG35
SEG34
SEG33
SEG32
SEG31
SEG30
SEG29
SEG28
SEG27
SEG26
SEG25
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG1
1
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
COM4
COM3
COM2
COM1
SEG2
VDD
VDD1
VDD2
VSS
SEG52
INH
LCD_CE
LCD_CLK
LCD_DATA
100
R901
100
R984
82
R938
82
R941
120
R909
150
R910
150
R939
220
R908
220
R985
220
R982
220
R983
270
R937
68
R940
0
R986
1
C906
1
C908
DA2J10100L
D982
180
R907
0.1
C901
0.1
C905
0.1
C909
0.1
C910
RKZ18B2KGP1
D900
1.5k
R960
RE901
2
4
5
3
1
LCD-DATA
LCD-CLK
LCD-CE
LCD-DATA
S[37]
S[22]
S[34]
S[19]
S[38]
S[23]
S[33]
S[39]
S[32]
S[24]
S[40]
S[31]
S[25]
S[8]
S[41]
S[30]
S[26]
S[42]
S[9]
S[27]
COM[2]
COM[1]
COM[3]
S[28]
COM[4]
S[29]
COM[3]
S[48]
S[30]
COM[4]
S[47]
S[31]
S[3]
S[46]
S[32]
S[4]
S[45]
S[5]
S[33]
S[44]
S[29]
S[6]
S[34]
S[17]
S[28]
S[7]
S[35]
S[27]
S[8]
S[36]
S[26]
S[25]
S[10]
S[2]
S[24]
S[1
1]
S[3]
S[23]
S[12]
S[4]
S[22]
S[13]
S[5]
S[43]
S[43]
S[14]
S[6]
S[44]
S[42]
S[15]
S[7]
S[45]
S[41]
S[16]
S[46]
S[40]
S[17]
S[47]
S[39]
S[18]
S[48]
S[38]
S[19]
COM[1]
S[37]
S[20]
S[36]
S[21]
S[21]
S[35]
S[20]
COM[2]
S[9]
S[1]
S[12]
S[10]
S[14]
S[15]
S[1
1]
S[16]
S[13]
S[18]
LCD-CE
LCD-CLK
S[1]
S[2]
LC75839PW
(LCD BACK LIGHT)
(KEY ILLUMINATION)
(RING ILLUMINATION)
REMOTE CONTROL RECEIVER
IC902
LIQUID CRYSTAL DISPLAY DRIVER
IC901
S959
PAUSE
6
MIC/ZAP
5
S960
S961
SHUF
S962
4
REP
S963
3
S964
S965
S966
PTY
S957
CALL
S956
S955
S954
S953
S952
S951
ENCODER
ROTARY
LIQUID CRYSTAL DISPLAY
KEY BOARD
-2
-1
-2
-1
-2
-1
-2
-1
-2
-1
-2
-1
-2
-1
-2
-1
-2
-1
AUX
PUSH ENTER/
SELECT/
(VOLUME)
Q900-908
LED DRIVE
SOURCE
OFF
SEEK +
SEEK -
MODE
AF/TA
PTY
PTY
CAT
(US, CND)
(AEP, RU, UK)
(E, EA, MX, IND)
1
ALBUM
2
ALBUM
SCRL
DSPL
16
8
I
14
2
15
12
A
D
5
B
7
C
6
11
3
H
F
13
G
9
E
10
1
J
4
(Page 33)
Ver. 1.1
MEX-BT4000E/BT4000P/BT4000U/BT4050U/BT4054U
MEX-BT4000E/BT4000P/BT4000U/BT4050U/BT4054U
38
38
•  IC Block Diagrams
– MAIN Board –
IC301  TDF8556AJ/N5
IC402  NJM2881F33 (TE1)
IC401  BD3467FV-E2
IC681, 682  NJM2878F3-15 (TE2)
MUTE
MUTE
ENABLE
LOGIC
STANDBY/
MUTE
CHIP DETECT/
DIAGNOSTIC
PROTECTION/
DIAGNOSTIC
SWITCH
REGULATOR
SWITCH
REFERENCE
VOLTAGE
LOAD DUMP
PROTECTION
TEMPERATURE
PROTECTION
BACK-UP
SWITCH
REGULATOR
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
TAB
OUT-FL–
OUT-FL+
OUT-RL–
OUT-RL+
IN-RL
S-GND
IN-RR
OUT-RR+
OUT-RR–
OUT-FR+
OUT-FR–
DIAG
ANT-REM
AMP-REM
SERVO+3.3V
MECHA+6V
VP
BU+B
I2C_SIO
I2C_SCK
VP2
P-GND1
SVR
IN-FL
IN-FR
BEEP
P-GND3
VP1
STB
P-GND4
RST
CRES
AUDIO+B
(8.5V)
GND
PANEL+B
CBU
FL
RL
RR
VP
FR
I
2
C BUS
A1 1
INPUT SELECTOR
(2 SINGLE-END AND 4 STEREO ISO)
MUTE
MAIN GAIN
ADJUST
SUB GAIN
ADJUST
I2C
BUS
LOGIC
2ND ORDER LOW-PASS FILTER
INPUT GAIN
OUTC
40
A2 2
B1 3
B2 4
CP1 5
CN 6
CP2 7
ISO
GND
AMP
ISO
GND
AMP
DP1 8
DN 9
DP2 10
ISO
GND
AMP
ISO
GND
AMP
EP1 11
EN 12
EP2 13
ISO
GND
AMP
ISO
GND
AMP
FP1 14
FN1 15
ISO
GND
AMP
FN2 16
FP2 17
MIN 18
SPA1 19
SPA2 20
ISO
GND
AMP
OUTS
39
OUTR1
38
OUTR2
37
OUTF1
36
OUTF2
35
INF2
34
IG1
28
IG2
27
VCC
26
INF1
33
INR2
32
INR1
31
INS
30
INC
29
FADER
 ATT
FADER
 ATT
FADER
 ATT
FADER
 ATT
FADER
 ATT
FADER
 ATT
FADER
BOOST
FADER
BOOST
FADER
BOOST
FADER
BOOST
FADER
BOOST
FADER
BOOST
+
+
VCC
FIL
25
GND
24
SDA
23
SCL
22
MUTEB
21
5
VIN
4
VOUT
2
GND
3
NOISE BYPASS
1
CONTROL
BANDGAP
REFERENCE
THERMAL
PROTECTION
5
VIN
4
VOUT
2
GND
3
N.C.
1
CONTROL
BANDGAP
REFERENCE
THERMAL
PROTECTION
• Waveforms
– MAIN Board –
2
IC501 qd (OSCOUT)
1 V/DIV, 50 ns/DIV
145 ns
3 Vp-p
3
IC701 yj (XO)
1 V/DIV, 20 ns/DIV
59 ns
3.7 Vp-p
4
IC601 is (X2)
1 V/DIV, 50 ns/DIV
83 ns
2 Vp-p
1
IC501 qa (XOUT)
1 V/DIV, 20 
Ps/DIV
30.4 
Ps
2.6 Vp-p
Ver. 1.1
MEX-BT4000E/BT4000P/BT4000U/BT4050U/BT4054U
39
– KEY Board –
IC901  LC75839PW-US-H
IC1300  OZ539IGN-A1-0-TR
BST 1
LX 2
FLT_USB
9
VIN 3
EN_SYS 4
USBOUT 5
ISET_USB
10
RT
15
VREF
16
FB_USB 6
USBIN
2V
UVLS
7
SYNC 8
GNDA
14
VIC_USB
11
SS_SYS
13
EN_USB
12
HDR
+
OSCILLATOR
REFERENCE
GENERATOR
OVER CURRENT
PROTECTION
VS
SEL
Q
S
R
ADJUSTMENT
GENERATOR
CHARGE
PUMP
OVER-CURRENT
LIMIT
USB FAULT
PROTECITON
VOUT_SYS (USBIN)
FAULT PROTECTION
+
–
+
–
+
–
+ 
–
25
S27
26
S28
23
S25
24
S26
27
S29
28
S30
29
S31
30
S32
31
S33
32
S34
33
S35
34
S36
3
P1/S1
4
P2/S2
1
2
5
P3/S3
6
P4/S4
7
8
9
10
11
12
52
COM3
51
S51/COM4
59
VSS
64
DI
63
CL
62
CE
60
S53/OSCI
55
S52
61
INH
COMMON
DRIVER
CLOCK
GENERATOR
CCB INTERFACE
SHIFT REGISTER
CONTROL
REGISTER
SEGMENT DRIVER & LATCH
13
14
15
16
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
S17
S18
17 18
S19
S20
19 20
S21
S22
35
S37
36
S38
37
S39
38
S40
21
S23
22
S24
39
S41
40
S42
48
47
46
S48
45
S47
44
S46
43
S45
42
S44
41
S43
50
S50
49
S49
54
COM1
53
COM2
58
VDD2
57
VDD1
56
VDD
Ver. 1.1
MEX-BT4000E/BT4000P/BT4000U/BT4050U/BT4054U
40
•  IC Pin Function Description
MAIN BOARD  IC501  R5F3650NBDZ98FA (SYSTEM  CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
LCD_SO
O
Serial data output to the liquid crystal display driver
2
LCD_CLK
O
Serial clock signal output to the liquid crystal display driver
3
NOSE_SW
I
Front panel remove/attach detection signal input terminal    “L”: Front panel is attached
4
SIRCS
I
Remote control signal input from the remote control signal receiver
5
PB_TX
O
Serial data output to the serial fl ash
6
PB_RX
I
Serial data input from the serial fl ash
7
PB_CLK
O
Serial data transfer clock signal output to the serial fl ash
8
BYTE
I
External data bus width select signal input    Connect to VSS in this unitt
9
CNVSS
I
Flash write signal input terminal    Normally operation: “L”, Flash write: “H”
10
XIN
I
Low speed operation clock signal input terminal (32.768 kHz)
11
XOUT
O
Low speed operation clock signal output terminal (32.768 kHz)
12
RESET
I
System reset signal input from the reset signal generator    “L”: reset
13
OSCOUT
O
High speed operation clock signal output terminal (7.92 MHz)
14
VSS
-
Ground terminal
15
OSCIN
I
High speed operation clock signal input terminal (7.92 MHz)
16
VCC1
-
Power supply terminal (+3.3V)
17
NMI
I
Non-maskable interrupt signal input terminal    Fixed at “H” in this unit
18
RC_IN1
I
Rotary remote commander shift key input terminal
19
BUIN
I
Back up power supply detection signal input terminal    “L” is input at low voltage
20
SYSRST
O
Reset signal output to the serial fl ash and CD drive/USB controller    “L”: reset
21
PB_CE
O
Chip enable signal output to the serial fl ash
22
MC_RX
I
Serial data input from the CD drive/USB controller
23
DOOR_SW
I
Front panel remove/attach detection signal input terminal    Not used
24
MC_TX
O
Serial data output to the CD drive/USB controller
25
DOOR_ING
O
LED drive signal output terminal    Not used
26
SYNC_OUT
O
Synchronize signal output to the DC/DC converter
27
EJECT_OK
O
Eject OK signal output terminal    Not used
28
BEEP
O
Beep sound drive signal output to the power amplifi er
29
I2C_SCL
O
IIC serial clock signal output terminal
30
I2C_SDA
I/O
IIC two-way serial data bus terminal
31
FW_TXD
O
Flash writer data output terminal
32
FW_RXD
I
Flash writer data input terminal
33
FW_CLK
I
Flash writer clock signal output terminal
34
FW_BUSY
O
Flash writer busy signal output terminal
35
XM_TX
O
Serial data output to the SIRIUSXM IN connector (US and Canadian models only)
36
XM_RX
I
Serial data input from the SIRIUSXM IN connector (US and Canadian models only)
37
XM_POWER_EN
O
Power supply on/off control signal output to the SIRIUSXM IN connector 
(US and Canadian models only)
38
CD_ON
I
Power supply on/off control signal input terminal for the CD section
39
CDM_ON
I
Power supply on/off control signal input terminal for the CD mechanism section
40
WAKE_UP
O
System wake up signal output to the CD drive/USB controller
41
EPM
O
EPM signal output terminal    Fixed at “L” in this unit
42
Z_MUTE
I
Muting on/off control signal input from the CD drive/USB controller
43 to 45
NCO
-
Not used
46
CE
O
Chip enable signal output terminal    Fixed at “H” in this unit
47
HIT2_SDA
I/O
IIC two-way serial data bus with the FM/AM tuner unit
48
HIT2_SCL
O
IIC serial clock signal output to the FM/AM tuner unit
49
HIT2_RESET
O
Reset signal output to the FM/AM tuner unit
50
EN_USB
O
Power supply on/off control signal output to the DC/DC converter
51
VBUS_ON
I
VBUS on/off control signal input from the CD drive/USB controller    “H”: VBUS on
52
FLT_USB
I
Over current detection signal input from the DC/DC converter
53
EN_SYS
O
Power supply on/off control signal output to the DC/DC converter
54
IPOD
I
iPod connection mode is difference slope setting terminal
55
EXTATT_XEN
-
Not used
56
TELATT
I
Telephone attenuator detection signal input terminal
57
ACC_IN
I
Accessory power detection signal input terminal    “L”: accessory power on
58
ATT
O
Muting on/off control signal output terminal    “H”: muting on
Page of 58
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