Sony MEX-BT4700U / MEX-BT4750U Service Manual ▷ View online
MEX-BT4700U/BT4750U
37
• IC Pin Function Description
MAIN BOARD IC501 MB90F883AHPF-G-103E1 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
BT_PLAY
O
Key signal output to the Bluetooth section
2
BT_FR
O
Key signal output to the Bluetooth section
3
BT_FF
O
Key signal output to the Bluetooth section
4
BT_POWER_CTRL
O
Main power on/off control signal output terminal for the Bluetooth section “H”: power on
5 to 8
BT_STATUS0 to
BT_STATUS3
I
Status input from the Bluetooth section
9
XBT_RESET
O
Reset signal output to the Bluetooth section “L”: reset
10
BT_MFUNC
O
Key signal output to the Bluetooth section
11
BT_OPRPOW
O
Key signal output to the Bluetooth section
12
BT_STATUS_POW
I
Power supply status input from the Bluetooth section “H”: Bluetooth power on
13
X_OUT
O
Sub system clock output terminal (32.768 kHz)
14
X_IN
I
Sub system clock input terminal (32.768 kHz)
15
VCC
-
Power supply terminal (+3.3V)
16
VSS
-
Ground terminal
17
C
-
Not used
18
BT_TEST2
O
Test mode setting terminal for the Bluetooth test mode 2
19
BT_TEST1
O
Test mode setting terminal for the Bluetooth test mode 1
20
XNOSE_SW
I
Front panel remove/attach detection signal input terminal “L”: front panel is attached
21
XDOOR_SW
I
Front panel remove/attach detection signal input terminal “L”: front panel is attached
22
I2C_SIO
I/O
IIC two-way data bus
23
I2C_SCK
O
IIC data transfer clock signal output terminal
24
DOOR_IND
O
LED drive signal output terminal
25
CYRIL_SEL
I
Cyrillic letter response setting terminal “H”: corresponds to Cyrillic letter
26, 27
RE_IN0, RE_IN1
I
Jog dial pulse input from the rotary encoder
28 to 30
AREA_SEL2 to
AREA_SEL0
I
Setting terminal for the destination
31
B_OUTSEL
I
Blackout setting terminal “H”: blackout effective
32
AVCC
-
Power supply terminal (+3.3V)
33
AVRH
I
Reference voltage (+3.3V) input terminal
34
XRC_IN1
I
Rotary remote commander shift key input terminal
35
AVSS
-
Ground terminal
36
SA_IN
I
Spectrum analyzer display data select signal input terminal
37
VSM
I
FM and AM signal-meter voltage detection signal input from the PLL
38
TU_ATT
O
Tuner muting on/off control signal output terminal Not used
39, 40
KEY_IN1, KEY_IN0
I
Front panel key input terminal
41
RC_IN0
I
Rotary remote commander shift key input terminal
42
XEXT_ATT_XEN
O
Muting on/off control signal output terminal
43
WAKE_UP
O
Wakeup signal output to the CD section
44
VSS
-
Ground terminal
45
XKEY_ACK0
I
Acknowledge signal (wake up signal) input terminal for the rotary remote commander
On at input of “H”
On at input of “H”
46
XKEY_ACK1
I
Acknowledge signal (wake up signal) input terminal for the front panel key
On at input of “H”
On at input of “H”
47
DAVN
I
Synchronize detection signal input of RDS data block (BT4700U only)
48
LCD_CE
O
Chip enable signal output to the liquid crystal display driver
49
LCD_SO
O
Serial data output to the liquid crystal display driver
50
LCD_SCK
O
Serial data transfer clock signal output to the liquid crystal display driver
51 to 53
XMD2, MD1, MD0
I
Operation mode setting terminal
54
XRESET
I
System reset signal input from the reset signal generator and reset switch “L”: reset
55
UNISI
I
SONY bus data input terminal Not used
56
UNISO
O
SONY bus data output terminal Not used
57
UNISCK
O
SONY bus clock signal output terminal Not used
58
RDS_ON
O
Power on/off control signal output terminal for the RDS section (BT4700U only)
59
MC_RX
I
Serial data input from the CD section
MEX-BT4700U/BT4750U
38
Pin No.
Pin Name
I/O
Description
60
MC_TX
O
Serial data output to the CD section
61
XTEST_IN
-
Not used
62
Z_MUTE
I
Muting on/off control signal input from the CD section
63
XILL_IN
I
Illuminate line detect signal input for the auto dimmer control
Dimmer is present at input of “L”
Dimmer is present at input of “L”
64
ATT
O
Muting on/off control signal output terminal
65
VCC
-
Power supply terminal (+3.3V)
66
VSS
-
Ground terminal
67
BU_CHECK
I
Back up power supply detection signal input terminal “L” is input at low voltage
68
AMP_STB
O
Standby control signal output to the power amplifi er
69
XDIAG
I
Diagnostic signal input from the power amplifi er
70
EJECT_OK
I
CD eject OK signal output to the CD section
71
SA_OUT
O
Serial data output to the electrical volume
72
SA_CLK
O
Serial data transfer clock signal output to the electrical volume
73
F_AUX
O
Muting on/off control signal output terminal
74
BT_ATT_XEN
O
Muting on/off control signal output terminal for the Bluetooth section
75
VBUS_ON
O
Power on/off control signal output terminal for the CD section
76
XUSB_OVR
I
Over voltage detection signal input terminal for USB power supply section
77
FLASH_EN0
-
Not used
78
FLASH_EN1
-
Not used
79
USB_ON
O
Power on/off control signal output terminal for the USB section
80
DD_ON
O
Power on/off control signal output terminal for the USB section
81
TEL_ATT
I
Telephone muting detection signal input terminal
At input of “H”, the audio signal is attenuated by 20 dB
At input of “H”, the audio signal is attenuated by 20 dB
82
XACC_IN
I
Accessory power detection signal input terminal “L”: accessory power on
83
XBUS_ON
O
SONY bus on/off control signal output terminal Not used
84
CD_ON
I
CD servo power supply control request input terminal
85
CDM_ON
I
CD mecha power supply control request input terminal
86
XSYS_RST
O
Reset signal output terminal
87
BT_MIC_POW
O
Microphone power on/off control signal output for the Bluetooth section
“L”: power on
“L”: power on
88
XBT_MIC_SEL
O
Microphone selection signal output terminal
89
BT_MIC_DET
I
Microphone detection signal input terminal for the EXTERNAL MICROPHONE jack
90
VCC
-
Power supply terminal (+3.3V)
91
VSS
-
Ground terminal
92
OSC_IN
I
Main system clock input terminal (7.92 MHz)
93
OSC_OUT
O
Main system clock output terminal (7.92 MHz)
94
BT_MUTE
I
Muting on/off control signal input from the Bluetooth section
95
SIRCS
I
Remote control signal input from the remote control receiver
96
BT_INT-HF
I
HF operation notifi cation signal input from the Bluetooth section “H” active
97
BT_CVC
O
CVC selection request signal output to the Bluetooth section
98
ZAPPIN_BEEP
O
Beep sound drive signal output to the ellectrical volume
99
SYNC_OUT
O
Synchronize signal output to the DC/DC converter
100
BEEP
O
Beep sound drive signal output to the power amplifi er
39
MEX-BT4700U/BT4750U
SECTION 5
EXPLODED VIEWS
1
X-2176-199-1 LOCK
ASSY
2
1-835-781-11 CABLE, FLEXIBLE FLAT (21 CORE)
3
3-246-441-01 BUTTON (EJECT) (
A)
4
3-260-247-01 CUSHION (SUB PANEL)
5
3-042-244-01 SCREW
(T)
6
3-250-543-21 SCREW (+B P-TITE M2)
7
X-2342-664-1 PANEL ASSY, SUB (LCD/BT)
8
X-3384-203-2 GEAR
ASSY
10
2-668-792-01 BRACKET
(MIC)
11
2-134-636-01 SCREW
(M1.7X3.5)
12
1-834-678-11 LEAD WIRE WITH CONNECTOR
13
3-376-464-11 SCREW (+PTT 2.6X6), GROUND POINT
14
A-1643-766-A MAIN BOARD, COMPLETE (Including BT board)
(BT4700U)
14
A-1643-799-A MAIN BOARD, COMPLETE (Including BT board)
(BT4750U: E, MX, IND)
14
A-1643-808-A MAIN BOARD, COMPLETE (Including BT board)
(BT4750U: EA)
15
A-1641-142-A BT BOARD, COMPLETE (Included in MAIN board)
16
1-836-313-21 CORD, CONNECTION (MIC) (MIC IN)
17
1-776-527-71 CORD (WITH CONNECTOR) (ISO) (POWER)
(BT4700U)
17
1-833-972-11 CORD (WITH CONNECTOR) (POWER) (BT4750U)
FU701
1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) (10A/32V)
MIC801 1-542-689-11 MICROPHONE
#1
#1
7-685-792-09 SCREW +PTT 2.6X6 (S)
#2
7-685-790-01 SCREW +PTT 2.6X4 (S)
#3
7-685-793-09 SCREW +PTT 2.6X8 (S)
#4
7-685-794-09 SCREW +PTT 2.6X10 (S)
#5
7-685-135-19 SCREW +P 2.6X10 TYPE2 NON-SLIT
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
Note:
• -XX and -X mean standardized parts, so
• -XX and -X mean standardized parts, so
they may have some difference from the
original one.
original one.
• Items marked “*” are not stocked since
they are seldom required for routine ser-
vice. Some delay should be anticipated
when ordering these items.
vice. Some delay should be anticipated
when ordering these items.
• The mechanical parts with no reference
number in the exploded views are not sup-
plied.
plied.
• Color Indication of Appearance Parts Ex-
ample:
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color Cabinet’s Color
• Abbreviation
EA :
EA :
Saudi
Arabia
model
IND
: Indian model
MX
: Mexican model
5-1. MAIN SECTION
Note: When the BT board or MAIN board (including BT board) is replaced, it is necessary to confi rm operation. Refer to
“BLUETOOTH FUNCTION CHECKING METHOD USING A CELLULAR PHONE” of the servicing note (See page 5).
not supplied
not
supplied
supplied
not supplied
(SUB board)
(SUB board)
not supplied
(ANTENNA board)
(ANTENNA board)
not supplied
not supplied
MIC801
MAIN
board
board
FU701
not supplied
not supplied
CD mechanism deck section
(MG-101Z-188//Q)
(MG-101Z-188//Q)
not supplied
#1
#2
#1
#1
#3
#4
#5
#5
#3
#4
#2
#1
$
#
#
1
2
3
4
5
6
7
5
8
11
not supplied
not supplied
not supplied
&
%
%
"
"
&
$
10
13
13
16
17
14
15
12
#3
front panel section
The components identifi ed by mark
0
or dotted line with mark
0 are critical for
safety.
Replace only with part number specifi ed.
Replace only with part number specifi ed.
40
MEX-BT4700U/BT4750U
5-2. FRONT PANEL SECTION
51
A-1643-771-A PANEL OVERALL ASSY, FRONT (BT4700U)
51
A-1643-801-A PANEL OVERALL ASSY, FRONT (BT4750U)
52
3-264-712-01 SPRING
(OPEN)
53
X-2345-065-1 BUTTON ASSY (S) (BT4700U)
53
X-2345-066-1 BUTTON ASSY (S) (BT4750U)
54
X-2345-063-1 PANEL (SV) ASSY, FRONT (BT4700U)
54
X-2345-064-1 PANEL (SV) ASSY, FRONT (BT4750U)
55
X-2320-325-1 KNOB
ASSY
(S)
56
1-780-433-11 CONDUCTIVE BOARD, CONNECTION
57
3-874-328-02 ILLUMINATOR
(LCD)
58
X-2320-324-2 PANEL
(SV)
ASSY,BACK
59
3-250-543-21 SCREW (+B P-TITE M2)
60
X-2187-544-1 CASE ASSY (for FRONT PANEL)
61
3-229-100-01 SHEET
(SW),
ADHESIVE
CN971
1-820-858-31 CONNECTOR, USB (SOCKET)
LCD901 1-802-879-11 DISPLAY PANEL, LIQUID CRYSTAL (BT4700U)
LCD901 1-802-879-21 DISPLAY PANEL, LIQUID CRYSTAL (BT4750U)
RE901
LCD901 1-802-879-21 DISPLAY PANEL, LIQUID CRYSTAL (BT4750U)
RE901
1-487-023-11 ROTARY ENCODER (PUSH ENTER/SELECT/
(VOLUME))
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
Note: Refer to the servicing notes “NOTE FOR REPLACEMENT OF THE USB
CONNECTOR (CN971)” (See page 4), if replacing the Ref. No. CN971.
51
52
53
54
55
56
57
58
59
59
60
not supplied
not supplied
not supplied
not supplied
not supplied
not supplied
LCD901
CN971
RE901
not supplied
(JACK board)
(JACK board)
not supplied
(KEY board)
(KEY board)
not supplied
61
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