Sony NAS-S55HDE / NAS-SC55PKE / SS-S55HDE Service Manual ▷ View online
NAS-S55HDE/SS-S55HDE
57
IC1902 R1232D121B-TR-F
IC5003 RP103N181B-TR-FA
Q
R
S
2
DRIVER
OSCILLATOR
VIN
1
PGND
3
VDD
VDD
CURRENT
LIMIT
OUTPUT
CONTROL
SLOPE
COMPENSATION
PHASE
COMPENSATION
VREF
UVLO
SOFT
START
VDD
4
CE
CHIP
ENABLE
5 VOUT
6 TEST
7 AGND
8 LX
TEST
PWM
COMPARATOR
ERROR
AMPLIFER
VDD 1
GND 2
CE 3
NC
4
REGULATOR
VOUT
5
– MAIN Board –
IC102 WM8776SEFT/RV
48
1
2
3
4
5
6
7
8
9
10
11
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
AIN1L
AIN2L
AIN3L
AIN4L
AIN5L
AIN1R
AIN2R
AIN3R
AIN4R
AIN5R
DACBCLK
DACMCLK
DIN
ADCLRC
ZFLAGR
ZFLAGL
ADCBCLK
ADCMCLK
DOUT
AVDD
ADCREFP
ADCREFGND
ADCREFGND
VMIDADC
AUXL
AUXR
DACREFP
DACREFN
VMIDDAC
VOUTR
VOUTL
NC
NC
AINOPL
AINVGL
AINVGR
AINOPR
AGND
ADCLRC
DGND
DVDD
MODE
CE
DI
CL
HPOUTL
HPOUTR
HPGND
HPVDD
INPUT MIXER
STEREO
ADC
ALC
AUDIO INTERFACE
AND
DIGITAL
FILTERS
CONTROL INTERFACE
LOW PASS FILTERS
STEREO
ADC
VMID
12
NAS-S55HDE/SS-S55HDE
58
IC103 SN74LVC125APWR-12
1OE
1A
1Y
2OE
2A
2Y
GND
Vcc
4OE
4A
4Y
3OE
3A
3Y
1
2
3
4
5
6
7
8
9
10
11
12
13
14
IC106 TK11133CSCL-G
CONTROL
CIRCUIT
BANDGAP
REFERENCE
+
–
OVER HEAT &
OVER CURRENT
PROTECTION
1
VCONT
3
NP
2
GND
4
VOUT
5
VIN
IC109 TC4066BFS-EL (UK)
14
13
12
11
10
9
8
1
2
3
4
5
6
7
I/O 1
O/I 1
O/I 2
I/O 2
C2
C3
VSS
VDD
C1
C4
I/O 4
O/I 4
O/I 3
I/O 3
NAS-S55HDE/SS-S55HDE
59
IC201 MIP2F20MS1SO
CONSTANT
CURRENT
SOURCE
2
FB
1
VDD
4
VCC
5 DRAIN
8 SOURCE
7 SOURCE
7 SOURCE
3
CL
VCL
CLAMP CIRCUIT
(ILIMIT SETTING)
IN
ICL.LOW
VCL.OUT
ILIMIT VARIABLE
CIRCUIT
+
–
–
+
–
+
–
–
7.2V
+
–
–
2.4V
VCC UV
VCC OVP
OVERHEAT
PROTECTION
S
R
R
Q
Q
Q
RESTARTING
TRIGGER
R
S
S
Q
Q
Q
+
–
–
27%
22%
22%
FOR LIGHT LOAD
DETECTION INTERMITTENT
OSCILLATION CONTROL
GENERATOR
CLOCK
12kHz
MAXDC
5.7V
5.0V
5.0V
VDD UV
5.7V
REGULATOR
VDD CLAMP
CIRCUIT
6.6V
+
–
ILIMIT
CORRECTION
CIRCUIT
FOR
DRAIN CURRENT
DETECT
GATE DRIVER
POWER
MOSFET
AT TURNING ON
BLANKING PULSE
GENERATION CIRCUIT
IC302, 303, 305 SI8001FDE
OVER
CURRENT
PROTECTOR
LATCH
&
DRIVER
OVER HEAT
PROTECTOR
REGULATOR
ON/OFF
SOFT
START
+
–
+
–
RESET
VREF
COMPARATOR
ERROR AMP
OSC
1
VIN
2
SW OUT
3
GND
4
ADJ
5
SOFT
ST
AR
T
OVER
CURRENT
PROTECTOR
LATCH
&
DRIVER
OVER HEAT
PROTECTOR
REGULATOR
ON/OFF
SOFT
START
+
–
–
+
–
–
RESET
VREF
COMPARATOR
ERROR AMP
OSC
1
VIN
2
SW OUT
3
GND
4
ADJ
5
SOFT
ST
AR
T
IC304 SI-8008TM-TLS
NAS-S55HDE/SS-S55HDE
60
12
11
10
9
8
7
6
5
4
3
VSUBC
XVSS
OUTR2
VSSR
OUTR1
VDDR
VSSL
VSSR
OUTL2
OUTL1
VSSL
VDDL
2
1
PWM
CLOCK
GENERATOR
(SECONDARY)
CLOCK
GENERATOR
(PRIMARY)
31
29
25 OVFFLAGL
26 SFLAG
27 INIT
30
S H P
GAIN
CONTROL
INIT/
MUTE
SAMPLING
RATE
CONVERTER
FILTER &
LOW CUT
FILTER
LINER
INTERPOLATOR
Δ Σ
48
XFSOIN
47
XVDD
HPVDDL
46
45
HPOUTL1
HPVSSL
44
43
HPOUTL2
HPVDDR
42
41
HPOUTR1
HPVSSR
40
HPOUTR2
39
37
FSOCKO
38
FSOI
13
XOVSS
14
XFSOOUT
15
XOVDD
16
DVDD
17
DVSS
18
NSPMUTE
19
SOFTMUTE
20
PGMUTE
SERIAL
CONTROLLER
21
SCDT
22
SCSHIFT
23
SCLA
TCH
24
OVFFLAGR
28 MCKSEL
32 BFVDD
33 BFVSS
34 TEST
35 DVDD
36 XFSIIN
LRCK
BCK
DATA
IC702 CXD9788AR
THERMAL &
OVER CURRENT
PROTECTION
VOLTAGE
REFERENCE
ON/OFF
CONTROL
VIN 1
GND 2
VCONT 3
NC
4
VOUT
5
+
–
IC701 TK63118SCL-G@GT
IC380 TK11100CSCB-G
VOUT
1
FB
2
VIN
3
NOISE P
ASS
6
GND
5
VCONT
4
CONTROL
CIRCUIT
OVER HEAT
PROTECTION
&
OVER CURRENT
PROTECTION
+
–
BANDGAP
REFERENCE
IC307 TK73400AU3G0L-C
1
VCONT
2
VIN
3
GND
4
VOUT
5
FB
VREF
–
+
+
THERMAL &
OVER CURRENT
PROTECTION
ON/OFF
CONTROL
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