Read Sony MEX-BT4700U / MEX-BT4750U Service Manual online
MEX-BT4700U/BT4750U
MEX-BT4700U/BT4750U
20
20
SECTION 4
DIAGRAMS
4-1. BLOCK DIAGRAM - AUDIO Section (1/2) -
• SIGNAL PATH
: USB
: CD PLAY
: AUDIO
: Bluetooth
: MIC
• R-ch is omitted due to same as L-ch.
CN971
(USB)
CN501
D400
2
3
CD MECHANISM
DECK
(MG-101Z-188//Q)
SENSOR
BOARD
SERVO BOARD
BT BOARD
(PATTERN ANTENNA)
MIC801
AU_LCH
RXD (MC-BUS)
CD_ON
CDM_ON
VBUS_ON
60 MC_TX
84 CD_ON
85 CDM_ON
75 VBUS_ON
84 CD_ON
85 CDM_ON
75 VBUS_ON
TXD (MC-BUS)
D- (USB)
D+ (USB)
59 MC_RX
XSYS_RST
BT_ON
BT_ON
SYS_RST
SYS_RST
BU_CHECK
BU_CHECK
AU_ATT
AU_RCH
R-CH
BT_AUDIO_L
BT_AUDIO_R
R-CH
Z_MUTE
EJECT_OK
WAKE_UP
62 Z_MUTE
70 EJECT_OK
43 WAKE_UP
70 EJECT_OK
43 WAKE_UP
88 XBT_MIC_SEL
51 XMD2
89 BT_MIC_DET
53 MD0
D801
D802
D472
D502
5
3
7
F_WRITE
(NC)
NCO
TX
4
RX
1
RESET
RESET
SWITCH
Q598
INVERTER
Q599
MUTING
CONTROL
Q493
78 FLASHEN1
2
CLK
61 XTEST_IN
INVERTER
Q597
XEXT_A
TT_XEN
42
AT
T
64
BT_MUTE
MUTING
CONTROL
Q490
BT_A
TT_XEN
74
MIC AMP
IC813 (1/2)
SYSTEM CONTROLLER
IC501 (1/3)
CENTER VOLTAGE
REGULATOR
IC813 (2/2)
AUDIO
+8.5V
MIC
+3.3V
+3.3V
MIC B+
MIC_IN-
MIC_IN+
MIC
AMP
IC814
MIC AMP
Q824, 825
MUTING
Q862
B+ SWITCH
Q820 - 822
MIC INPUT
SELECT
IC812
INVERTER
Q823
J801
EXTERNAL
MICROPHONE
BT_TEST1
BT_TEST2
BT_TEST2
BT_MFUNC
BT_FF
BT_FR
BT_TEST1
19
BT_TEST2
18
BT_MFUNC
10
BT_FF
3
BT_FR
2
BT_PLAY
BT_CVC
BT_INT-HF
BT_STATUS0
BT_STATUS1
BT_STATUS1
BT_PLAY
1
BT_CVC
97
BT_MUTE
BT_MUTE
94
BT_INT_HF
96
BT_OPRPOW
BT_POW_ON
BT_OPRPOW
11
BT_RESET
XBT_RESET
9
BT_STATUS_POW
12
BT_STATUS0
5
BT_STATUS1
6
BT_STATUS2
BT_STATUS2
7
BT_STATUS3
BT_STATUS3
8
BT-L
ATT
CD-L
A
MUTING
CONTROL
Q470, 471
+
DOOR_SW
D494
73
F_AUX
B
USB SELECT
SWITCH
IC971
USB ON/OFF
CONTROL
Q971
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