Sony SRS-BTV25 Service Manual ▷ View online
SRS-BTV25
SRS-BTV25
25
25
4-8. SCHEMATIC DIAGRAM - MAIN Section (4/4) -
• See page 26 for IC Block Diagrams.
Note 1: Q901 on the MAIN board cannot exchange with single. When
this part is damaged, exchange the complete mounted board.
Note 2: When the JACK board is defective, exchange the BATTERY HOLDER
(SV) ASSY (for Black) or BOTTOM FRAME (SV) ASSY (for White).
Note 3: When the USB board is defective, exchange the BATTERY HOLDER
(SV) ASSY (for Black) or BOTTOM FRAME (SV) ASSY (for White).
BOARD
(3/4)
6
MAIN
MAIN
3
(1/4)
BOARD
IC B/D
IC B/D
4
BOARD
MAIN
(1/4)
0
3
3.7
0
5
0.5
0.6
11.2
13.2
2.3
1.7
0
0
3.3
5
0.3
3.3
5
3.3
13.2
13.2
13.2
13.2
13.2
0
3.3
DZ2J140M0L
D904
CTL_PWR1
V13
DGND
10uH
L901
V13E
V51
JL903
JL904
1
2
3
4
4P
CN901
VBUS
VBUS
GND
GND
JL901
JL902
TPS2553DBVR
IC901
1
IN
2
GND
3
EN
4
FAULT
5
ILIM
6
OUT
DRC5115E0L
Q902
DRC5115E0L
Q903
DA2J10100L
D903
FB903
FB904
FB901
FB902
TPS54331GDR
IC903
1
BOOT
2
VIN
3
EN
4
SS
5
VSENSE
6
COMP
7
GND
8
PH
SJPJ-L3VL
D902
CL901
DRC5115E0L
Q906
DZ2J056M0L
D905
DGND
VBUS_PROTECT_DET
0.1
C919
DRC5115E0L
Q907
6
5
4
3
2
1
D
D
G
S
D
D
TPC6110(T5RSONY,
Q901
1
2
2P
CN902
13V
GND
MC2838-T112-1
D907
GN1G
D909
GN1G
D910
FB905
FB906
FB907
DA2J10100L
D908
C922
0.1
0.1
C901
16V
220
C902
22k
R905
100k
R928
22
C905
22
C904
22
C906
22
C903
10k
R910
2.2k
R914
12k
R912
1M
R911
33k
R913
47p
C908
1000p
C907
0.1
C909
0.01
C911
0.1
C912
1
C920
0.1
C921
25V
470
C915
220k
R915
47k
R916
10k
R917
22
C913
0.1
C916
100k
R920
C923
0.1
IC903
DC/DC CONVERTER
IC901
VBUS SWITCH
(4/4)
MAIN BOARD
USB
BOARD
JACK
BOARD
(2/2)
POWER CONTROL
OVER LOAD DETECT
B+ SWITCH
OVER LOAD DETECT
OVER LOAD DETECT
8
2
A
D
5
B
7
C
6
11
3
F
9
E
10
1
4
(Page 24)
(Page 22)
(Page 22)
SRS-BTV25
SRS-BTV25
26
26
• IC Block Diagrams
– MAIN Board –
IC102 PST850AU
GND 1
VDD 2
OUT
RD
VS
3
+
–
VREF
4
IC103, 104, 404 MM3404A33NRE
IC403 MM3404A50NRE
IC403 MM3404A50NRE
VOUT
5
NC
4
CE 3
GND 2
VDD 1
+
VOLTAGE
REFERENCE
CURRENT
LIMIT
BIAS
IC301 NJU7181RB1 (TE2)
CAP_D
5
RES_D
6
V+
8
OUT
7
IN
1
AMP_OUT
2
TRIN
3
GND
4
LEVEL
DETECTOR
DELAY
LATCH
CLR
D
+
–
–
L
IC304 NJM2752RB2
IN2A 4
V+ 3
IN1A 2
OUTA 1
CONT1 5
LOGIC
IN2B
7
GND
8
IN1B
9
OUTB
10
Vref
6
VREF
IC402 PCM1808PWR
DELTA-SIGMA
MODULATOR
DELTA-SIGMA
MODULATOR
ANTIALIAS
LOW-PASS FILTER
ANTIALIAS
LOW-PASS FILTER
AGND
VCC
2
3
3
VDD
DGND
4
5
5
LRCK 7
REFERENCE
u1/64
DECIMATION
FILTER
WITH
HIGH-PASS
FILTER
SERIAL
INTERFACE
&
MODE/FORMAT
CONTROL
FMT
12
VINR
14
VINL
13
MD1
11
MD0
10
DOUT
9
BCK
8
CLOCK & TIMING CONTROL
POWER
SUPPLY
SUPPLY
SCKI 6
VREF 1
IC406 TAS5707PHPR
SERIAL
AUDIO
PORT
7 BQ
PDAP
MICROCONTROLLER
BASED SYSTEM
CONTROL
SAMPLE RATE
AUTODETECT
AND PLL
SERIAL
CONTROL
TERMINAL CONTROL
4th
ORDER
NOISE
SHAPER
AND
PWM
VOLUME
SRC
SDIN
22
SCLK
21
LRCLK
20
VR_DIG
18
DVSSO
17
OSC_RES
16
PDN
19
SCL
24
SDA
23
AVDD
13
FAULT
BST_B
PVDD_B
PVDD_B
PVDD_B
OUT_B
PVDD_C
BST_C
PVDD_C
OUT_C
14
43
44
45
45
PGND_AB
PGND_AB
PGND_AB
47
48
48
46
41
42
40
PGND_CD
PGND_CD
38
37
39
MCLK
15
7 BQ
L
R
DRC
2x HB
FET OUT
PROTECTION
LOGIC
2x HB
FET OUT
CLICK AND POP
CONTROL
RESET
25
STEST
26
AGND
30
GND
29
DVSS
28
DVDD
27
VREG
31
GVDD_OUT
32
PVDD_D
34
PVDD_D
35
BST_D
33
OUT_D
36
OUT_A
1
PVDD_A
2
PVDD_A
3
GVDD_OUT
5
BST_A
4
SSTIMER
6
OC_ADJ
7
NC
8
AVSS
9
PLL_FLTM
10
PLL_FLTP
11
VR_ANA
12
SRS-BTV25
27
IC901 TPS2553DBVR
IC903 TPS54331GDR
GND 2
EN 3
IN 1
4 FAULT
5 ILLM
6 OUT
CHARGE
PUMP
UNDERVOLTAGE
LOCKOUT
THERMAL
SENSE
CURRENT
LIMIT
4-ms
DEGLITCH
8-ms
DEGLITCH
CURRENT
SENSE
DRIVER
+
–
RREVERSE VOLTAGE
COMPARATOR
EN 3
VIN 2
BOOT 1
7 GND
8 PH
5 VSENSE
SHUTDOWN
LOGIC
BOOT
CHARGE
THERMAL
SHUTDOWN
SS 4
ENABLE
THRESHOLD
THRESHOLD
ENABLE
COMPARATOR
+
+
–
6 COMP
MAXIMUM
CLAMP
FREQUENCY
SHIFT
GATE
DRIVE
LOGIC
LOGIC
BOOT
UNDERVOLTAGE
LOCKOUT
OSCILLATOR
SLOPE
COMPENSATION
ECO-MODE
MAXIMUM CLAMP
DISCHARGE
LOGIC
VOLTAGE
REFERENCE
PWM
COMPARATOR
PWM
LATCH
6
Q R
S
12 A/V
CURRENT
SENSE
ERROR
AMPLIFIER
SRS-BTV25
28
• IC Pin Function Description
MAIN BOARD IC101 R5F364A6DFB (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1 to 5
NO USE
-
Not used
6
BYTE
I
External data bus width selection signal input terminal Fixed at “L” in this unit
7
CNVSS
I
Processor mode selection signal input terminal
8, 9
NO USE
-
Not used
10
RESET
I
System reset signal input from the reset switch “L”: reset
11
XO
O
System clock output terminal (8 MHz)
12
VSS
-
Ground terminal
13
XI
I
System clock input terminal (8 MHz)
14
VCC1
-
Power supply terminal (+3.3V)
15
NO USE
-
Not used
16
AC CUT
I
AC cut detection signal input from the voltage detect IC
17
VBUS_OCP_DET
I
VBUS over current detection signal input terminal
18
BT_MUTE
I
Muting on/off control signal input from the bluetooth section
19 to 28
NO USE
-
Not used
29
TXD1
O
Serial data output terminal for fl ash writing
30
RXD1
I
Serial data input terminal for fl ash writing
31
CLK1
O
Serial data transfer clock signal output terminal for fl ash writing
32
BT_CTS
I
Clear to send signal input from the bluetooth section
33
BT_TXD
O
Serial data output to the bluetooth section
34
BT_RXD
I
Serial data input from the bluetooth section
35
BT_RESET
O
System reset signal output to the bluetooth section
36
BT_RTS
O
Request to send signal output to the bluetooth section
37
BT_CTL_PWR
O
Power on/off control signal output terminal for the bluetooth function
38
NO USE
-
Not used
39
EPM
O
EPM signal output terminal for fl ash writing Fixed at “L” in this unit
40 to 43
NO USE
-
Not used
44
CE
O
Chip enable signal output terminal for fl ash writing Fixed at “H” in this unit
45
DAMP_SDA
I/O
Serial data input/output with the power amplifi er
46
DAMP_SCL
I/O
Serial data transfer clock signal input/output with the power amplifi er
47
DAMP_RESET
O
System reset signal output to the power amplifi er
48
DAMP_PDN
O
Power down signal output to the power amplifi er “L”: power down
49
CTL_V5A
O
Power on/off control signal output terminal for the audio function
50
AUDIO_DET
I
Audio level detection signal input from level detect IC
51 to 56
NO USE
-
Not used
57
DA_DZF
-
Not used
58
NO USE
-
Not used
59
INPUT SEL
O
Audio source selection signal output to input select IC
60
VCC2
-
Power supply terminal (+3.3V)
61
NO USE
-
Not used
62
VSS
-
Ground terminal
63 to 69
NO USE
-
Not used
70
CTL_PWR
O
Power on/off control signal output terminal for the power amplifi er
71
DAMP_FAULT
I
Fault signal input from the power amplifi er “L”: fault
72
DC_DET (PROTECT)
I
DC detection signal input terminal
73
KEY_PWR
I
Power key input terminal
74 to 82
NO USE
-
Not used
83
LED PWR
O
LED drive signal output terminal for POWER indicator LED “H”: LED on
84
LED BT
O
LED drive signal output terminal for bluetooth indicator LED “H”: LED on
85
LED BASS
O
LED drive signal output terminal for BOOST indicator LED “H”: LED on
86
LED AUDIO
O
LED drive signal output terminal for AUDIO IN indicator LED “H”: LED on
87 to 89
NO USE
-
Not used
90
KEY_1 (PWR/VOL+–)
I
Top panel key input terminal (A/D input)
91
KEY_2 (BT)
I
Top panel key input terminal (A/D input)
92
KEY_3 (BASS/PLAY)
I
Top panel key input terminal (A/D input)
93
DESTINATION
I
Destination setting signal input terminal
94
AVSS
-
Ground terminal
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