Sony MEX-BT4000E / MEX-BT4000P / MEX-BT4000U / MEX-BT4050U / MEX-BT4054U Service Manual ▷ View online
MEX-BT4000E/BT4000P/BT4000U/BT4050U/BT4054U
21
3-11. SLED MOTOR ASSY
3 sled motor assy
sled motor assy
1 spring
spring
stand
stand
turn table
2 three serration screws
(M2
u 3)
three
serration
screws
(M2
u 3)
bearing (F)
bearing (R)
Note 1: Place the stand with care not to touch the turn table.
Note 2: Never remove these parts since they were adjusted.
Note 3: Take care to prevent the chassis from being bent
when tightening the three machine screws.
1RWHIRU$VVHPEO\
–
ERWWRPVLGHYLHZ
–
–
ERWWRPVLGHYLHZ
–
–
ERWWRPVLGHYLHZ
–
MEX-BT4000E/BT4000P/BT4000U/BT4050U/BT4054U
22
3-13. OPTICAL PICK-UP
3-12. OPTICAL PICK-UP SECTION
1
2 optical pick-up section
Note: Be careful not to touch the lens and hologram
terminal when removing the optical pick-up section.
–
bottom side view
–
There is space at the end of the
leaf spring (OPS) to avoid
contact with the slide.
leaf spring (OPS) to avoid
contact with the slide.
5 optical pick-up
4 lead screw assy
Prevent the end of the
leaf spring (OPS) from being
in contact with the OP slide base.
leaf spring (OPS) from being
in contact with the OP slide base.
Prevent the end of the
leaf spring (OPS) from being
in contact with the OP slide base.
leaf spring (OPS) from being
in contact with the OP slide base.
1 tapping screw
(P
1.4)
2 leaf spring (OPS)
3 rack
–
bottom side view
–
Notes for Assembly
MEX-BT4000E/BT4000P/BT4000U/BT4050U/BT4054U
MEX-BT4000E/BT4000P/BT4000U/BT4050U/BT4054U
23
23
SECTION 4
TEST MODE
SETTING THE TEST MODE
Setting method:
1. Press the [SOURCE/OFF] button for 1 second to turn the pow-
1. Press the [SOURCE/OFF] button for 1 second to turn the pow-
er off.
2. Press the [4]
[5] [1] buttons sequentially (the [1] button
is pressed for two seconds).
3. It is set to the test mode, and all segments of the liquid crystal
display light.
Releasing method:
Press the [SOURCE/OFF] button for 1 second.
Press the [SOURCE/OFF] button for 1 second.
MICROPHONE AUDIO LOOPBACK
To confi rm the state of the external microphone/internal micro-
phone used when a handsfree function is used, the microphone
audio is output from the speaker.
The breakdown judgment of the microphone can be done without
connecting H/F with the cellular phone.
To confi rm the state of the external microphone/internal micro-
phone used when a handsfree function is used, the microphone
audio is output from the speaker.
The breakdown judgment of the microphone can be done without
connecting H/F with the cellular phone.
Procedure:
1. Enter the test mode.
2. Press the [SOURCE/OFF] button to select the Bluetooth Phone
1. Enter the test mode.
2. Press the [SOURCE/OFF] button to select the Bluetooth Phone
function.
3. On/off of the microphone audio loopback function changes
whenever the [2] button is pressed (“ALBM” is displayed in
the liquid crystal display).
the liquid crystal display).
LOOPBACK
ALBM
ON
Lit
OFF
None
THE EXTERNAL MICROPHONE DETECTION
STATE DISPLAY
Connected confi rmation of the external microphone detection line
is done.
The trouble that doesn't change into an external microphone occurs
when this detection circuit is broken.
STATE DISPLAY
Connected confi rmation of the external microphone detection line
is done.
The trouble that doesn't change into an external microphone occurs
when this detection circuit is broken.
Procedure:
1. Enter the test mode.
2. Press the [SOURCE/OFF] button to select the Bluetooth Phone
1. Enter the test mode.
2. Press the [SOURCE/OFF] button to select the Bluetooth Phone
function.
3. Plug in the external microphone into the MIC IN terminal.
4. The detection state of the external microphone is displayed in
4. The detection state of the external microphone is displayed in
the liquid crystal display (“TRACK” is displayed).
For MEX-BT4000P/BT4000U “TRACK” still show every
time when pull out and pull in external microphone.
MEX-BT4000E/BT4000P/BT4000U/BT4050U/BT4054U
MEX-BT4000E/BT4000P/BT4000U/BT4050U/BT4054U
24
24
SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAM - CD SERVO Section -
CD MECHANISM
DECK BLOCK
(MG-101CA-188)
AUTO POWER
CONTROL
Q710
FPI1
A
B
C
F
E
PD
LD
18
FNI2
15
FNI1
16
FPI2
17
TNI
21
TPI
20
LDO
25
MDI
24
CD HEAD AMP,
DIGITAL SERVO PROCESSOR,
AUDIO DSP
IC701
CD DRIVE/USB
CONTROLLER
IC601
FOCUS
FOO
31
TRACK
TRO
32
SL
FMO
34
SP
DMO
35
DRV_ON
DRV_ON
35
LOAD
MEC_LOAD
36
EJECT
MEC_EJECT
37
USB+
85
USB–
86
D_SW
MEC_LIMIT
39
IN_SW
MEC_INSW
40
L_SW
MEC_DSW
41
SELF
MEC_SELFSW
25
X701
16.934MHz
XO
XI
67
66
70
ADIN1 (IN_L-CH)
74
ADIN2 (IN_R-CH)
PRE_L
PRE_R
A
B
57
DAO3 (F_L-CH)
54
DAO2 (F_R-CH)
59
DAO4 (R_L-CH)
61
DAO5 (SUB-CH)
52
DAO1 (R_R-CH)
FL
FL, FR, RL, RR, SUB
RL
SUB
FR
RR
17
DEC_LRCK
23
CD_SI
22
CD_SO
24
CD_SCLK
29
CD_XCCE
19
DEC_DA
TA
18
DEC_BCK
27
DEC_INT
16
DEC_XMUTE
92
BSIF_LRCK
91
BSIF_BCK
93
DEC_XMUTE
20
DEC_GA
TE
89
BSIF_GA
TE
38
DEC_SSTBY
37
/SRAMSTB
21
DEC_REQ
88
BSIF_REQ
87
DEC_REQ
90
BSIF_DA
TA
So
79
Si
80
SCL
81
/CCE
82
28
CD_XRST
/RST
85
15
CD_ZDET
ZDET
94
3
2
1
USB_VBUS
CN971
95
SP_DATA
SA_DATA
89
96
SP_CLK
SA_CLK
90
53
CDON
CD_ON
38
56
RxD
MC_TX
24
55
TxD
MC_RX
22
52
MECON
CDM_ON
39
8
WAKEUP
WAKE_UP
40
54
ZMUTE
Z_MUTE
42
74
VBUS_ON
6
PB_RX
5
PB_TX
7
PB_CLK
21
PB_CE
VBUS_ON
51
DATA_OUT
2
DATA_IN
5
CLK
6
S
1
RESET
7
51
A-ATT
12
BU_IN
3
RESET
SYSRST
20
BU_IN
E
A_ATT
F
RESET
D
D731
SDA
EEPROM
IC680
13
SCL
12
NRESET
4
71
CP_RESET
69
CP_SCL
68
CP_SDA
72
CPON
73
CDON_15V
B+ SWITCH
Q682, 683
+1.5V
REGULATOR
IC682
IC701 VDDM1
+1.5V
REGULATOR
IC681
IC701 VDD1
BU +3.3V
SYSTEM CONTROLLER
IC501 (1/3)
SIGNAL PATH
: AUDIO
: CD
: USB
X601
12MHz
X2
X1
82
80
SERIAL FLASH
IC505
(Page 25)
(Page 25)
(Page 26)
(Page 26)
(Page 25)
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