Read Sony NAS-SV20DI / NAS-SV20I Service Manual online
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
Click on the first or last page to see other NAS-SV20DI / NAS-SV20I service manuals if exist.