Sony NAS-SV20DI / NAS-SV20I (serv.man2) Service Manual ▷ View online
NAS-SV20Di/SV20i
NAS-SV20Di/SV20i
29
29
4-6. SCHEMATIC DIAGRAM - PANEL Section -
• See page 30 for IC Block Diagrams.
Note 1: The mount parts on the MOTHER board installed in this set
cannot exchange with single excluding a part of parts. When
the mount parts that have not been described in electrical parts
list are damaged, exchange the entire mounted board.
the mount parts that have not been described in electrical parts
list are damaged, exchange the entire mounted board.
Note 2: The mount parts on the TOUCH KEY board installed in this
set cannot exchange with single. When the TOUCH KEY
board is defective, exchange the entire FRONT PANEL
ASSY.
board is defective, exchange the entire FRONT PANEL
ASSY.
CN102
A
BOARD
(1/2)
MAIN
B
MAIN
CN252
BOARD
(2/2)
IC B/D
C
BOARD
CN104
(1/2)
MAIN
CN251
BOARD
D
MAIN
(2/2)
3.3
3.3
0
1.3
2.1
2.1
0
1.8
0.7
0.7
1.3
0
0.7
1.8
0.7
1.3
1.3
0.7
0
0.7
2.8
0
4.7
4.2
5
5
3.3
3.3
5
3.3
3.3
5
BZ501
JL501
JL502
JL503
JL509
JL510
JL511
JL504
JL505
JL506
JL507
JL508
47
R501
JL516
JL517
JL518
C506
1
VCC
OUT
GND
PNA4823M02S0
IC501
1
2
3
5P
CN502
1
GND
2
GND
3
POWER_SW
4
RED_LED
5
GREEN_LED
1
2
3
4
5
6
7
7P
CN501
GND
LCD_XRST
+3.3V
SP1_CLK
SP1_CS0
LCD_A0
SP1_SO
1
2
3
4
5
6
7
8
9
10
11
12
13
13P
CN503
GND
BKL-ON
DIMMER
GREEN_LED
RED_LED
POWER_SW
SP1_SO
SP1_CLK
SP1_CS0
LCD_XRST
3.3V
GND
BUZZER
10k
R516
1k
R504
RT1N431M-TP-1
Q502
2SC4154TP-1EF
Q503
2SC4154TP-1EF
Q504
2SC4154TP-1EF
Q505
2SC4154TP-1EF
Q506
2SC4154TP-1EF
Q507
2SC4154TP-1EF
Q508
SELG1WA10CXMLF74-P0A0
D501
SELG1WA10CXMLF74-P0A0
D502
1k
R517
1k
R518
68
R519
68
R520
68
R521
68
R522
22k
R523
22k
R524
4.7k
R525
4.7k
R526
ISA1235AC1-T112-1EF
Q509
47k
R527
10k
R528
JL512
JL513
1
2
3
4
CN504
4P
BU3.3V
SIRCS
GND
5V
RT1N431M-TP-1
Q510
100
R529
RT1N431M-TP-1
Q501
IC501
REMOTE CONTROL
Q501, 502
BUZZER DRIVE
(LCD BACKLIGHT)
(LCD BACKLIGHT)
Q503-508
DIMMER CONTROL
LED DRIVE
Q509, 510
RECEIVER
LCD BOARD
13
A
15
E
D
C
4
14
16
17
8
G
B
1
11
3
10
I
9
J
F
H
6
2
5
7
12
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
30P
CN801
DGND
DGND
TPA+
USB D+
TPA-
USB D-
TPB+
USB Vbus
TPB-
Accessory Identify
F/W PWR+
F/W PWR+
Accessory Power
Reserved
DGND
DGND
Reserved
iPod RX
iPod TX
Accessory Detect
S Video Y
S Video C
Composite Video
Remote Sense
LINE-IN L
LINE-IN R
LINE-OUT L
LINE-OUT R
A/V Return
iPod Detect
C801
0.1
C803
22
0
R804
JL801
JL802
JL803
JL804
JL807
JL808
JL809
1
2
3
4
5
6
7
8
8P
CN802
XOC
ENABLE
IPOD_DET
VBUS
D-
D+
GND
FGND
10
C812
MIC2005-0.5YM6TR
IC801
1 VIN
2 GND
3 ENABLE
4
FAULT/
5
CSLEW
6
VOUT
1
2
2P
CN803
5V
GND
JL810
JL811
C802
22
JL812
JL813
C814
22
C815
22
VDR801
VDR802
VDR803
VDR804
VDR805
VDR806
S
SSM3K15FU(TE85L)
Q801
R808
10k
R809
10k
VDR807
C816
22
D801
MC2840-T112-1
IPOD BOARD
IC801
VBUS SWITCH
DOCK
iPod/iPhone
OVER CURRENT
PROTECT
JL552
JL554
JL555
JL556
JL557
JL558
C552
1
C553
1
JL551
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CN551
16P
RES
RS(A0)
CSB
SCL
SDA
VSS
PS0
VDD
VOUT
C3P
C1P
C1N
C2P
C2N
C4P
V0
JL553
C551
1
1
2
3
4
5
6
7
7P
CN552
SP1_SO
LCD_A0
SP1_CS0
SP1_CLK
+3.3V
LCD_XRST
GND
0
R554
0
R555
0
R556
0
R557
10p
C556
10p
C557
10p
C558
R552
10k
R553
0
LCD-JUNC BOARD
LIQUID
CRYSTAL
ELEMENT
LCD1
1
2
3
4
5
6
6P
CN201
5V
5V
GND
3.3V
BU3.3
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
16P
CN300
LEDON
MS_BS/SD_CMD
BOOTSEL0
MS_DA
TA1/SD_DA
TA1
BOOTSEL1
MS_DA
TA0/SD_DA
TA0
PWRON
MS_DA
TA2/SD_DA
TA2
3.3V_VDD
MS_INS/SD_INS
VDD_GP3
MS_DA
TA3/SD_DA
TA3
VIO18
MS_SCKO/SD_CKO
GND
-/SD_CKI
1
2
3
4
5
6
6P
CN302
GND
DIAG_EN
3.3V_VDD
UR
T0_SRIN
UR
T0_SOUT
VDD_VIO3
6P
CN400
1
2
3
4
5
6
7
8
8P
CN600
XOC
ENABLE
IPOD_DET
VBUS
D-
D+
GND
FGND
8P
CN801
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
30P
CN1001
CODEC_XRST
POWER_SW
RED_LED
GREEN_LED
UR
T1_SOUT
GND
UR
T1_SRIN
POWER_ON
78K0_RESET
FLMD0
VDD_HP
LRCK_L
GND
BCK_L
GND
SDIN_L
GND
SDOUT_L
GND
AUDIO_SEL
SDA
SCL
DAB33_ON
DAB12_ON
DAB_XRST
UR
T2_SOUT
UR
T2_SRIN
MUTE
NC
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
13P
CN1000
BUZZER
GND
3.3V
LCD_XRST
SP1_CS0
SP1_CLK
SP1_SO
POWER_SW
RED_LED
GREEN_LED
DIMMER
BKL-ON
GND
1
2
3
4
5
6
7
7P
CN1101
2.85V
GND
INT
SCL
GND
SDA
RESET
MOTHER BOARD
NETWORK
(NC)
(NC)
(NC)
S400
(GREEN)
(RED)
SML72423C-TP15
D400
100
R400
220
R401
150
R402
JL403
JL402
JL401
JL400
5P
CN400
1
GREEN_LED
2
RED_LED
3
POWER_SW
4
GND
5
/
POWER_SW BOARD
GND
(ON/STANDBY)
S601
S602
S603
JL601
JL602
JL603
JL604
5P
CN601
1
NC
2
PARTY
3
VOL_DOWN
4
VOL_UP
5
GND
C603
0.01
C601
0.01
C602
0.01
100
R603
100
R601
100
R602
TACT_SW BOARD
+
VOLUME
START/CLOSE
PARTY
VOLUME
–
TOUCH KEY
BOARD
1
3
2
5
4
6
7
8
(Page 27)
(Page 26)
(Page 27)
(Page 26)
NAS-SV20Di/SV20i
NAS-SV20Di/SV20i
30
30
• Waveforms
– MAIN Board –
1
IC103 8 (X2)
1 V/DIV, 100 ns/DIV
238 ns
2.8 Vp-p
2
IC102 6 (SCKI)
1 V/DIV, 50 ns/DIV
88.5 ns
2.6 Vp-p
3
IC102 7 (LRCK)
1 V/DIV, 10
Ps/DIV
22.6
Ps
3.2 Vp-p
356 ns
3.3 Vp-p
4
IC102 8 (BCK)
1 V/DIV, 200 ns/DIV
5
IC101 6 (3A)
200 mV/DIV, 50 ns/DIV
92 ns
0.6 Vp-p
6
IC107 qg (XOUT)
1 V/DIV, 20 ns/DIV
41.4 ns
2.3 Vp-p
IC251, 263 TPS54233DR
EN 3
VIN 2
BOOT 1
7 GND
8 PH
5 VSENSE
SHUTDOWN
LOGIC
BOOT
CHARGE
THERMAL
SHUTDOWN
SS 4
ENABLE 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
9 A/V
CURRENT
SENSE
ERROR
AMPLIFIER
• IC Block Diagrams
- MAIN Board -
IC102 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
IC104 MC14052BDTR2
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
2Y0
1Y2
VCC
1Y1
1-COM
1Y0
1Y3
A
B
GND
GND
INH
2Y1
2Y3
2-COM
2Y2
IC107 YDA156-VZE2
DVSS 1
GPIO6 2
GPIO5 3
GPIO5 3
PLLAVSS
14
PLLAVDD
13
DVSS
20
MUTE_N
23
NC
24
TEST
21
PVSSR
28
PVSSR
27
OUTPR
26
PVDDPR
25
PVSSL
34
OUTPL
35
PVDDPL
36
OUTMR
29
PVDDMR
30
PVDDML
31
PVSSL
33
REFA
38
REFD
39
AVSS
40
DVSS
41
DVDD18
42
VREF
37
GPIO11
43
GPIO7
47
DVDD3
48
XOUT
15
XIN
16
DVDD3
17
GPIO4 4
GPIO3 5
GPIO3 5
DVDD18 6
GPIO2 7
GPIO1 8
GPIO0 9
GPIO1 8
GPIO0 9
IC_N 10
PLLDVDD 11
PLLDVSS 12
GPIO8
46
GPIO9
45
GPIO10
44
GENERAL
IO
SWITCH
AUDIO
INTERFACE
SUB
DSP
DSP
D/A
CONVERTER
INTERFACE
MAIN
DSP
FM
SYNTHESIZER
CLOCK
GENERATOR
PRESET
ROM
PLL
NOISE
SHAPER
DIGITAL
AMPLIFIER
17 LEVEL
DYNAMIC
ELEMENT
MATCHING
17 LEVEL
D/A
CONVERTER
OUTML
32
SDA
18
SCL
19
MICROPROCESSOR
INTERFACE
REGISTERS
PROT_N
22
NAS-SV20Di/SV20i
31
IC255 S-1323B18NB-N8DTFG
- IPOD Board -
IC801 MIC2005-0.5YM6TR
IC252 MM3404Z28URE
IC254 MM3404A12URE
IC254 MM3404A12URE
VOUT
3
CE 1
GND 2
VDD
4
+
–
VOLTAGE
REFERENCE
CURRENT
LIMIT
BIAS
VOUT 1
VIN
4
ON/OFF
3
VSS 2
+
–
–
OVERCURRENT
PROTECTION
REFERENCE
VOLTAGE
ON/OFF
CONTROL
CONTROL
LOGIC &
DELAY TIMER
SLEW
RATE
CONTROL
THERMAL
SENSOR
GATE
CONTROL
VIN
GND
ENABLE
VOUT
FAULT/
POWER
FET
CURRENT
MIRROR FET
CURRENT
LIMIT
CONTROL
LOOP
VREF
1
2
3
6
4
CSLEW
5
UNDER
VOLTAGE
DETECTOR
NAS-SV20Di/SV20i
32
• IC Pin Function Description
MAIN BOARD IC103
μPD78F0501AMC (S)-CAB-E2-AX (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
D_RESET
O
Reset signal output to the digital power amplifi er
2, 3
NO USE
-
Not used
4
SIRCS
I
SIRCS signal input terminal
5
AC_DETECT
I
Power failure detection input terminal
6
XRESET
I
System reset signal input terminal
7
FLMD0
I
Not used Fixed at “L” in this set
8
X2
O
System clock output terminal (4.19 MHz)
9
X1
I
System clock input terminal (4.19 MHz)
10
REGC
-
Not used
11
VSS
-
Ground terminal
12
VDD
-
Power supply terminal (+3.3V)
13
NO USE
I
Not used
14
POWER_ON
O
Power supply on/off control signal output terminal
15
D_ERROR
I
Protect detection signal input from the digital power amplifi er
16
SIRCS
I
SIRCS interrupt signal input terminal
17
POWER_SW
I
Power key signal input terminal
18
RED_LED
O
LED (red) drive signal output terminal “L”: LED (red) on
19
GREEN_LED
O
LED (green) drive signal output terminal “L”: LED (green) on
20
VDD_HP
I
Power supply voltage detection signal input terminal for the VDD_HP
21
NO_USE
I
Not used
22
RXD
I
Serial data input terminal for the software writing UART
23
TXD
O
Serial data output terminal for the software writing UART
24
5V_OFF
O
Power supply on/off control signal output terminal for the DC/DC converter
“H”: DC/DC converter off
“H”: DC/DC converter off
25
SI
-
Not used
26
XSCK
-
Not used
27
AVREF
I
Reference voltage input terminal the A/D converter (+3.3V)
28
AVSS
-
Ground terminal for the A/D converter
29
MUTE
O
Audio muting on/off signal output terminal
30
SPEC_IN
I
Destination setting terminal
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