Sony SA-NS300 Service Manual ▷ View online
SA-NS300
17
• IC Block Diagrams
IC11 PCM1754DBQR (MAIN Board (1/2))
IC12 PCM1808PWR (MAIN Board (1/2))
IC18 PST3645NR (MAIN Board (1/2))
1
AUDIO
SERIAL
PORT
POWER
SUPPLY
SUPPLY
BCK
SYSTEM
CLOCK
2
DATA
3
LRCK
4
DGND
5
NC
6
VCC
15
SERIAL
CONTROL
PORT
FMT
14
4x/8x OVERSAMPLING DIGITAL
FILTER & FUNCTION CONTROL
ENHANCED MULTI LEVEL
DELTA-SIGMA MODULATOR
D/A
CONVERTER
D/A
CONVERTER
ZERO
DETECT
OUTPUT AMP
& LOW-PASS
& LOW-PASS
FILTER
OUTPUT AMP
& LOW-PASS
& LOW-PASS
FILTER
MUTE
SYSTEM
CLOCK
MANAGER
16 SCK
13 DEMP
12 TEST
11 ZEROA
9 AGND
7
LOUT
8
ROUT
10 VCOM
VDD 2
OUT 1
GND 3
+
–
VREF
CD
5
NC
4
Reference
Delta Sigma
Modulator
Delta Sigma
Modulator
x1/64
Decimation
Filter
with
High Pass Filter
Power
Supply
Clock
and
Timing
Control
Antialias
LPF
Serial
Interface
Mode/
Format
Control
Control
Antialias
LPF
BCK
VINL
VREF
VINR
AGND
AVCC
1
DVDD
DGND
LRCK
DOUT
SCKI
FMT
MOD1
MOD0
2
3
4
5
6
7
8
9
9
10
13
14
11
12
12
SA-NS300
18
IC15 TPS54325PWPR (MAIN Board (1/2))
IC16 TPS54325PWPR (MAIN Board (1/2))
IC16 TPS54325PWPR (MAIN Board (1/2))
IC20 YDA153-PZE2 (MAIN Board (1/2))
1
–30%
+
–
UV
–20%
+
–
+
+
–
+
–
OV
2
REF
VO
VFB
3
VREG5
4
SS
SS
REF
–10%
SW
REF
PGND
SOFT START
CONTROL LOGIC
5
GND
6
PG(OD)
7
EN
14
13
VCC
15
POWERPAD
VIN
12 VBST
11 SW2
10 SW1
10 SW1
VREG5
VREG5
1 SHOT
9 PGND2
8 PGND1
8 PGND1
SS
PWM
EN
LOGIC
VREG5
REF
UVLO
PROTECTION
LOGIC
UV
OCP
VCC
OV
UVLO
TSD
XCON
C4
B2
B3
C2
C1
A4
B4
IN+
AGND
IN–
B1
A1
OUT+
PGND
OUT–
A2
C3
A3
VREF
/PD
PLT
AR
/PROT
VDD
INPUT
BUFFER
OUTPUT
BUFFER
DIGITAL
MODULATOR
NON-CLIP2 &
POWER LIMIT
CONTROL
START UP &
SHUT DOWN
CONTROL
PROTECTION
CIRCUIT
19
SA-NS300
SECTION 5
EXPLODED VIEWS
1
X-2547-037-1 CABINET
ASSY
2
1-481-528-11 FILTER, CLAMP (FERRITE CORE)
3
4-986-971-12 SCREW
(3.5)
4
4-218-253-31 SCREW (M2.6), +BTTP
SP1
1-858-386-11 LOUD SPEAKER (5 cm)
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
Note:
• -XX and -X mean standardized parts, so
• -XX and -X mean standardized parts, so
they may have some difference from the
original one.
original one.
• Items marked “*” are not stocked since
they are seldom required for routine ser-
vice. Some delay should be anticipated
when ordering these items.
vice. Some delay should be anticipated
when ordering these items.
• The mechanical parts with no reference
number in the exploded views are not sup-
plied.
plied.
• Color Indication of Appearance Parts Ex-
ample:
KNOB, BALANCE (WHITE) . . . (RED)
Parts Color Cabinet’s Color
5-1. CABINET SECTION
1
2
3
4
4
3
not supplied
panel section
bottom panel section
not supplied
not supplied
SP1
20
SA-NS300
5-2. PANEL SECTION
51
4-175-511-01 IND
(LINK)
52
X-2548-651-1 BUTTON
(REAR)
ASSY
53
4-198-894-01 COVER
(LINK)
54
A-1764-138-A BACK-PANEL BOARD, COMPLETE
55
3-087-053-01 +BVTP 2.6 (3CR)
56
1-832-554-21 CABLE, FLEXIBLE FLAT (9 CORE)
57
4-185-316-11 PACKING
(PLATE)
58
4-185-316-21 PACKING
(PLATE)
59
4-175-503-01 IND
(PARTY)
60
X-2548-650-1 BUTTON
(RM)
ASSY
61
A-1764-136-A FRONT-PANEL BOARD, COMPLETE
62
1-832-543-21 CABLE, FLEXIBLE FLAT (7 CORE)
63
4-261-066-01 PACKING
(BUTTON)
64
4-185-318-01 PACKING,
CABINET
65
A-1819-534-A PANEL
ASSY
66
4-261-066-11 PACKING
(BUTTON)
67
2-584-656-11 WASHER,
POLYETHYLENE
68
4-261-066-21 PACKING
(BUTTON)
#1
7-685-647-79 SCREW +BVTP 3X10 TYPE2 IT-3
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
51
52
53
54
55
55
55
56
57
58
58
59
60
68
67
61
62
63
64
65
66
not supplied
not supplied
not supplied
#1
Note: If the wire (fl at type) was replaced, fold it some as the
wire (fl at type) before replacement.
Ver. 1.1
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