Sony DSX-A50BT / DSX-A50BTE Service Manual ▷ View online
DSX-A50BT/A50BTE
DSX-A50BT/A50BTE
17
17
5-2. BLOCK DIAGRAM - DISPLAY/POWER SUPPLY Section -
SYSTEM CONTROLLER
IC101 (2/2)
LIQUID CRYSTAL DISPLAY DRIVER
IC901
ACC
7
AMP-REM
ANT-REM
ANT-REM
5
6
6
19
+B
16
B/U B+
B/U B+
18
REGULATOR
IC401
CN102 (2/2)
AUDIO 8.5V
3
VCC2 8
+8.5V
AMP12V 13
REG 3.3V
15
REG_EN
10
VDD (BACKUP5V)
5
BU +3.3V
VCC1 9
AUDIO_EN
2
AMP_EN
12
+3.3V
REGULATOR
IC102
ACCESSORY
CHECK
Q106
B+ SWITCH
Q106
ACC_IN 55
+9V
REGULATOR
IC402
RESET
SIGNAL
GENERATOR
IC105
RESET 10
AMP_REM 72
AUDIO_EN 74
SYS_EN 73
SYS_ON 87
VDD_3.3V
EN_USB 48
FLT_USB 50
DI 48
CL 47
CE 46
EN_SYS 51
BU_IN 66
SYNC_OUT 24
FU101
USB_VBUS
VIN 3
2 LX
USBIN 7
5 USBOUT
DC/DC CONVERTER
IC501
SYNC
8
EN_SYS
4
EN_USB
12
FL
T_USB
9
D106
D107
BATTERY
CHECK
Q103
BACK UP
VOLTAGE
DETECT
Q101, 104
NOSE_SW
LSW901 – 906 (2/2),
S901 – 906
(FRONT PANEL KEY)
RCIN1
88
RC_IN0
95
J101
REMOTE IN
(VOLUME)
DIMMER
CONTROL
Q901
LIQUID CRYSTAL DISPLAY
LCD901
LED902 – 907 (Former type),
LED902, 903, 906 – 908 (New type),
LSW901 – 906 (1/2)
(ILLUMINATION)
79 RE_IN0
80 RE_IN1
80 RE_IN1
ROTARY
ENCODER
S907 (2/2)
89 KEYACK0
90 KEYACK1
DIMMER
2
LED901
(LCD BACK LIGHT)
LCD_CE
98
LCD_CLK
100
LCD_SO
99
92 KEYIN1
ROTARY
ENCODER
S907 (1/2)
59 ILL_ON
93 KEYIN0
OSCOUT
OSCIN
X101
32.768kHz
XOUT
XIN
11
13
9
8
SIRCS
2
REMOTE CONTROL
RECEIVER
IC902
SEG1 – SEG32
SEG1 – SEG32
32
COM1 – COM4
COM1 – COM4
4
12
12
CN001
CN103
1
SYS_3.3V
BT +3.3V
BT_MIC_ON (A50) 81
PUSH ENTER/
SELECT/
+3.3V
REGULATOR
IC601
X102
7.92MHz
X102
7.92MHz
(Saudi Arabia)
Except
Saudi Arabia
Ver. 1.2
Note: Refer to “NEW/FORMER DISCRIMINATION”
(page 2 on supplement-1) for New/Former types.
DSX-A50BT/A50BTE
DSX-A50BT/A50BTE
18
18
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
• f : Internal component.
•
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
• f : Internal component.
•
: Pattern from the side which enables seeing.
(The other layers’ patterns are not indicated.)
• Waveforms
– MAIN Board –
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
and
1
/
4
W or less unless otherwise
specifi ed.
• f : internal component.
• C : panel designation.
• C : panel designation.
• A : B+ Line.
• Power voltages is dc 14.4V and fed with regulated dc
• Power voltages is dc 14.4V and fed with regulated dc
power supply from ACC and BATT cords.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER
• Voltages are taken with a VOM (Input impedance 10 M
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F :
F :
AUDIO
f :
TUNER
d :
USB
E :
AUX
a :
Bluetooth
N :
MIC
• Abbreviation
AR :
AR :
Argentina
model
EA
: Saudi Arabia model
IND
: Indian model
MX
: Mexican model
RU
: Russian model
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
• Indication of transistor.
C
B
These are omitted.
E
Q
2
IC101 qa (OSCOUT)
1 V/DIV, 50 ns/DIV
126 ns
3.5 Vp-p
1
IC101 9 (XOUT)
1 V/DIV, 20
Ps/DIV
30.5
Ps
2.5 Vp-p
3
IC501 1 (BST), 2 (LX)
5 V/DIV, 1
Ps/DIV
2.4
Ps
18.2 Vp-p
4
IC501 8 (SYNC)
1 V/DIV, 1
Ps/DIV
2.4
Ps
3.3 Vp-p
5
IC201 ug (X12OUT)
1 V/DIV, 50 ns/DIV
83 ns
3.2 Vp-p
qa
IC901 rf (OSC)
1 V/DIV, 10
Ps/DIV
28.4
Ps
2.6 Vp-p
– KEY Board –
• Abbreviation
AR :
AR :
Argentina
model
EA
: Saudi Arabia model
IND
: Indian model
MX
: Mexican model
RU
: Russian model
Note: When the MAIN board in this unit is replaced, the destination
setting is necessary. Refer to “NOTE THE MAIN BOARD OR
SYSTEM CONTROLLER (IC101) REPLACING” (page 4).
SYSTEM CONTROLLER (IC101) REPLACING” (page 4).
Note: When the MAIN board in this unit is replaced, the destination
setting is necessary. Refer to “NOTE THE MAIN BOARD OR
SYSTEM CONTROLLER (IC101) REPLACING” (page 4).
SYSTEM CONTROLLER (IC101) REPLACING” (page 4).
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
Ver. 1.1
DSX-A50BT/A50BTE
DSX-A50BT/A50BTE
19
19
5-3. SCHEMATIC DIAGRAM - MAIN Section (1/3) -
• See page 28 for IC Block Diagrams.
(2/3)
MAIN
BOARD
1
BOARD
(3/3)
2
MAIN
IC B/D
IC B/D
IC B/D
IC B/D
7
2.4
7
7
7
14.1
8.5
7
7
7
7
7
7
7
14.1
7
4.1
7
3.3
3.3
8.5
4.9
4.9
14.1
3.3
0
12
3.3
3.3
14.1
0
3
3
3
4.1
8.4
3
3
3
3
3
8.4
3
3
3
3
3
3
8.4
3
3
3
3
0
0
0
0
0
0
0
0
0
2
2
3.3
2.6
2.4
8.4
13.9
13.9
0
0
0
6.5
6.5
0
0
3.3
0.5
0
8.9
3.3
14.1
4.9
3.3
4.9
3
3
3
3
3
3
8.4
CN102
16P
1
FL+
2
RL+
3
RR+
4
FR+
5
AMP-REM
6
ANT-REM
7
ACC
8
GND
9
FL–
10
RL–
11
RR–
12
FR–
16
+B
13
TEL-ATT
14
ILL
15
TEST
17
+B
18
+B
19
+B
GN1G
D403
GN1G
D401
RKZ18B2KGP1
D114
R106
1k
RKZ7.5B2KGP1
D106
2SC4154TP-1EF
Q104
DRC5114E0L
Q103
DRC5144E0L
Q101
1k
R107
RKZ18B2KGP1
D107
R105
220k
0.01
C110
220
R330
220
R333
220
R326
220
R329
25V
47
C105
22
R118
DRA5114E0L
Q109
J101
GN1G
D404
GN1G
D405
0
R260
0
R262
0
R263
R320
10k
R311
10k
10
R321
10
R318
R309
10k
10
C403
C407
10
10
C408
10k
R404
10k
R403
10
C314
10
C313
10
C310
10
C317
10
C305
10
C306
10
C309
4.7uH
L251
IC303
BA4560RFVM-TR
1
2
3
4
V-
5
6
7
8
V+
C401
16V
3300
Q305
LTC614TUFP8T106
Q303
LTC614TUFP8T106
Q302
LTC614TUFP8T106
Q301
LTC614TUFP8T106
2SC3052EF-T1-LEF
Q106
DA2J10100L
D116
4.7k
R346
150
R336
10k
R327
10k
R328
10k
R331
10k
R332
25V
47
C257
DRC5114E0L
Q304
100
R338
0.1
C331
16V
22
C319
IC302
BA4560RFVM-TR
1
2
3
4
V-
5
6
7
8
V+
6.3V
1000
C106
C119
1
R302
10k
C404
1
1
C409
1
C332
220
R337
12k
R301
12k
R308
12k
R319
12k
R310
100k
R312
100k
R315
100k
R307
R304
100k
220p
C304
220p
C301
220p
C303
220p
C308
100
R356
1
C340
10
C410
1
C406
140uH
L401
S-1142B90I-E6T1U
IC402
1
VOUT
2
VSS
3
ON/OFF
4
NC
5
VSS
6
VIN
LV47011P-E
IC304
1
TA
B
2
PW_GND2(FL)
3
FL–
4
STBY
5
FL+
6
VCC2
7
RL–
8
PW_GND1(RL)
9
RL+
10
RIPPLE
11
IN_RL
12
IN_FL
13
PRE_GND(BEEP?)
14
IN_FR
15
IN_RR
16
AC_GND
17
RR+
18
PW_GND3(RR)
19
RR–
20
VCC1
21
FR+
22
MUTE
23
FR–
24
PW_GND4(FR)
25
OFFSET
0.47
C102
0.47
C101
0.1
C255
1
C324
1
C327
1
C326
1
C320
1
C322
1
C323
1
C321
1
C325
0.22
C330
0.22
C318
0.22
C412
12k
R317
10k
R316
100k
R405
FB101
FB102
FB103
DRC5114Y0L
Q110
16V
220
C411
16V
C122
100
1
C328
1
C349
J303
220
R325
220
R322
220
R324
220
R323
0
R339
R259
0
47p
C329
IC301
BA4560RFVM-TR
1
2
3
4
V-
5
6
7
8
V+
4.7k
R305
4.7k
R306
0.1
C302
4.7k
R313
4.7k
R314
0
R252
0
R257
RF_ANT_IN
RF_GND
AUDIO_OUT_L
AUDIO_OUT_R
RSTN
SCL
SDA
+8.5V
POWER_GND
TU251
9
4
5
3
1
2
6
7
8
LV56831P-E
IC401
1
NC
2
AUDIO_EN
3
AUDIO 8.5V
4
NC
5
VDD(BACKUP5V)
6
IKVDD
7
NC
8
VCC
9
VCC1
10
REG_EN
11
IKREG
12
AMP_EN
13
AMP12V
14
GND
15
REG 3.3V
47k
R335
10k
R334
10k
R117
10k
R114
10k
R407
47k
R111
47k
R116
4.7k
R112
C231
1
C233
1
C237
1
C239
1
MM1836A33NRE
IC102
1
CONT
2
GND
3
NOISE
4
VOUT
5
VIN
BUIN
AMP_REM
AUDIO_EN
SYS_EN
ACC_IN
HIT2_SCL
HIT2_RST
HIT2_SDA
LINE AMP
IC301
LINE AMP
IC302
CENTER VOLTAGE GENERATOR
IC303
POWER AMP
IC304
REGULATOR
IC401
Q109, 110
IC402
1
9
11
19
20
21
14
13
8
6
18
17
16
15
3
26
24
23
5
27
4
10
2
22
12
25
7
MAIN BOARD (1/3)
+3.3V REGULATOR
IC102
(CHASSIS)
CAM251
(ANTENNA IN)
TUX-DSP02
(TUNER UNIT)
R
L
REAR
AUDIO OUT
32V
10A
FU101
(REMOTE IN)
ACCESSORY CHECK
BATTERY CHECK
Q101, 104
BACK UP VOLTAGE DETECT
+9V REGULATOR
MUTING CONTROL
MUTING
SWITCH
MUTING
MUTING
MUTING
MUTING
16
8
I
14
2
15
12
A
D
5
K
B
M
7
C
L
17
6
11
3
H
F
13
G
9
E
10
1
J
18
19
4
J301
4P
R
L
FRONT
AUDIO OUT
PW1
PW1
FRONT LCH-
FRONT LCH+
REAR LCH+
REAR LCH-
REAR RCH+
REAR RCH-
FRONT RCH+
FRONT RCH-
ACC
BATT
GND
REM OUT
MAX 0.4A
RL-
RL-
RL+
RL+
FL-
FL-
FL+
FL+
FR-
FR-
FR+
FR+
RR-
RR-
RR+
RR+
AMP REM
BATT
GND
MAX 0.3A
ACC
AMT REM
BATT
GND
ACC
AMT REM
TO
CN301
(AEP, RU, UK, AR)
(E, EA, MX, IND)
TO
CN102
TO
CN102
GN1G
D402
(AEP, UK)
10
R514
IC602
BA4560RFVM-TR
1
2
3
4
V-
5
6
7
8
V+
MIX AMP
IC602
0.1
C618
R611 33k
C617 100p
R610 33k
C616 100p
100p
C614
100p
C615
33k
R606
22k
R604
2.2
C611
33k
R607
22k
R609
2.2
C610
22k
R605
2.2
C612
22k
R608
2.2
C613
BT_LCH_N
BT_LCH_P
BT_RCH_P
BT_RCH_N
0.1
C355
(EA)
(Page 20)
(Page 21)
Ver. 1.1
DSX-A50BT/A50BTE
DSX-A50BT/A50BTE
20
20
5-4. SCHEMATIC DIAGRAM - MAIN Section (2/3) -
• See page 18 for waveforms. • See page 28 for IC Block Diagrams. • See page 29 for IC Pin Function Description.
Note: When the system controller (IC101) in this unit is replaced, the des-
tination setting is necessary. Refer to “NOTE THE MAIN BOARD
OR SYSTEM CONTROLLER (IC101) REPLACING” (page 4).
OR SYSTEM CONTROLLER (IC101) REPLACING” (page 4).
1
BOARD
(1/3)
MAIN
MAIN
3
BOARD
(3/3)
BOARD
CN001
KEY
A
IC B/D
1
2
4
3
3.3
3.3
0
0
0
0
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
2.6
2.4
0
0
0
0
0
0
0
0
3.3
0
0
3.3
3.3
0
3.3
3.3
0
0
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
0
3.3
0
1.3
1.3
3.3
1.6
1.5
3.3
3.3
3.3
3.3
3.3
0
0
0
0
0
1
0
3.3
3.3
0
3.3
3.3
10.1
5.1
14.1
3.3
5.1
0.9
5.1
1
5.7
1.5
5.7
3.3
0
0.9
3.3
39k
R505
0.01
C509
16V
100
C517
100k
R506
0.1
C516
DB2X41400L
D501
1
C502
JL101
JL104
JL103
JL105
JL108
JL107
JL102
JL106
1
2
3
4
5
6
7
8
8P
CN101
RESET
CLK
BUSY
TXD(UCOM->JIG)
RXD(JIG->UCOM)
BU3.3V
FLASH_W
GND
10k
R143
32.768kHz
X101
4
3
1
2
PST8228UL
IC105
VOUT
Vdd
NC
VSS
X102 7.92MHz
(EXCEPT EA)
(EA)
X102
7.92MHz
DRA5114E0L
Q102
CL014
CL013
CL012
CL011
3.3k
R133
3.3k
R130
CL015
CL016
CL017
CL018
CL019
CL020
CL021
CL022
CL023
CL024
R513
470
22
C511
10
C508
100
R501
82k
R507
25V
47
C518
470
R502
0.01
C513
680p
C510
R516
470
220k
R504
R503
10k
1k
R173
18p
C157
22p
C158
1M
R181
10uH
L501
47uH
L502
R115
100k
100
R214
IC501
OZ529IGN
1 BST
2 LX
3 VIN
4 EN_SYS
5 USB_OUT
6 FB_US
7 USB_IN
8 SYNC
9
FLT_USB
10
ISET_USB
11
VIC_USB
12
EN_USB
13
SS_SYS
14
GNDA
15
RT
16
VREF
CN103
15P
3
RE_1
2
KEY_GND
10
LCD_CLK
13
GND
7
SIRCS
4
RE_0
14 NC
11
ILL
1
KEY_GND
8
LCD_DATA
5
KEY_1
15
GND
12
PANEL_SW
9
LCD_CE
6
KEY_0
IC101
R5F3650KCDZ98FB
1
NOSE_SW
2
SIRCS
3
NC
4
NC
5
NC
6
BYTE
7
CNVSS
8
XIN
9
XOUT
10
RESET
11
OSCOUT
12
VSS
13
OSCIN
14
VCC1
15
NMI
16
CMD_ERR
17
BUSY
18
SYSRST
19
CE
20
SDI
21
SCK
22
SDO
23
USB_IN
24
SYNC_OUT
25
WDT_MON
26
BEEP
27
NC
28
NC
29
FW_TXD
30
FW_RXD
31
FW_CLK
32
FW_BUSY
33
NC
34
NC
35
NC
36
NC
37
NC
38
NC
39
EPM
40
DEBUG_1
41
DEBUG_2
42
DEBUG_3
43
DEBUG_4
44
CE
45
HIT2_SDA
46
HIT2_SCL
47
HIT2_RESET
48
EN_USB
49
NC
50
FLT_USB
51
EN_SYS
52
IPOD
53
NC
54
TELA
TT
55
ACC_IN
56
AT
T
57
AMP_MUTE
58
AMPSTB
59
ILL_ON
60
VCC2
61
NC
62
VSS
63
PIC_ERR
64
NC
65
BT_MUTE(A50)
66
BU_IN
67
NC
68
NC
69
NC
70
NC
71
NC
72
AMP_REM
73
SYS_EN
74
AUDIO_EN
75
BT_TX(A50)
76 BT_RX(A50)
77 NC
78 NC
79 RE-IN0
80 RE-IN1
81 BT_MIC_ON(A50)
82 BT_RTS(A50)
83 BT_CTS(A50)
84 BT_RESET(A50)
85 BT_POWER(A50)
86 NC
87 SYS_ON
88 RCIN1
89 KEYACK0
90 KEYACK1
91 NC
92 KEYIN1
93 KEYIN0
94 AVSS
95 RC_IN0
96 AVRH
97 AVDD
98 LCD_CE
99 LCD_SO
100 LCD_CLK
220k
R177
LRB751V
-40T1G
D1
15
10M
R176
10
C504
10
C505
220k
R303
100
R179
2.2
C514
0.01
C515
8.2k
R509
47k
R222
0
R803
0
R804
10
C160
100
R204
100
R209
100
R215
100k
R213
100
R208
100
R211
100
R207
100
R210
100k
R212
100
R206
10k
R216
100
R203
100k
R198
100
R174
100
R152
100
R171
100k
R202
100k
R194
100
R159
100
R161
100
R160
100
R185
1k
R167
1k
R162
470
R157
100
R190
100
R195
100k
R183
100
R197
1k
R200
100
R187
100
R186
100
R193
100
R390
100
R191
100
R189
100k
R219
100k
R220
100k
R221
100k
R172
100k
R168
100
R169
100k
R175
C155
0.1
10k
R139
10k
R140
0.01
C144
0.01
C143
1k
R132
1k
R131
BT_RX
0.01
C152
1000p
C151
1000p
C149
1000p
C150
100k
R184
C136
0.1
0.01
C252
0.01
C161
ACC_IN
AMP_REM
AUDIO_EN
FW_BUSY
FW_TXD
SDO
SCK
HIT2_RST
HIT2_SDA
HIT2_SCL
FLT_USB
EN_USB
CNVSS
FW_RXD
FW_TXD
FW_BUSY
FW_CLK
P
ANEL_DET
SIRCS
RE_1
RE_0
KEY_0
LCD_SO
LCD_CLK
PANEL_DET
SDI
USB_IN
LCD_CE
LCD_CLK
BUSY
WDT_MON
KEY_1
KEY_0
KEY_1
SIRCS
LCD_CE
SYS_EN
CMD_ERR
RE_1
100
R165
RE_0
SYSRST
LCD_SO
EN_SYS
BT_MUTE
CE
SYNC
FW_CLK
FW_RXD
CNVSS
FLT_USB
SYNC
EN_SYS
EN_USB
100
R156
100
R155
100
R154
100
R153
100
R158
1
2
3
4
5
6
7
8
9
10
11
12
13
14
29
30
31
28
32
IC101
SYSTEM CONTROLLER
IC501
DC/DC CONVERTER
IC105
RESET SIGNAL
MAIN BOARD (2/3)
(NC)
GENERATOR
B+ SWITCH
16
8
I
14
2
15
12
A
D
5
K
B
7
C
17
6
11
3
H
F
13
G
9
E
10
1
J
4
R180
BT_MIC_ON
BT_RTS
BT_CTS
BT_RESET
BT_POWER
BT_TX
100k
R149
100k
R138
39p
C159
(EA)
(EA)
39p
C162
100 (EA)
0 (EXCEPT EA)
R180
(Page 21)
(Page 27)
(Page 19)
Ver. 1.1
Click on the first or last page to see other DSX-A50BT / DSX-A50BTE service manuals if exist.