Sony DVP-NW50 Service Manual ▷ View online
45
45
DVP-NW50
DVP-NW50
6-23. SCHEMATIC DIAGRAM — DVD AMP SECTION (3/3) —
C151
C128
C132
C102
C105
C111
C115
R121
R103
R104
R105
R106
R107
D102
C119
C116
D1
R102
R101
C113
R143
R142
C107
C121
C125
C127
C129
D103
R108
R109
D104
C138
R122
Q101
U101
FB111
FB114
L101
FB101
FB102
FB103
C103
C133
C104
C110
C114
C146
C145
C131
C153
C130
C148
C144
C147
C117
C118
C13
FB108
FB1
FB2
CON101
U102
J103
C106
C120
C124
C108
C122
C126
FB104
FB106
FB109
FB105
FB107
FB110
C134
U103
C135
100
35V
330
35V
100
35V
10
16V
100
35V
100
35V
100
35V
2k
680
360
120
1k
4.7
SDB30A40
100
35V
10
16V
SDB10A40
240
0
330
35V
35V
10k
1W
10k
1W
1000
50V
1000
50V
330
35V
330
35V
100
35V
35V
SDB10A40
270
2.7k
SDB10A40
10
25V
50k
STN2907
TPS54350PWPR
PBY321611T
PBY321611T
PBY321611T
PBY321611T
PBY321611T
0.1
0.1
0.1
0.1
0.1
33n
1800p
82n
47n
0.1
3300p
1
0.1
0.1
0.1
1
PBY321611T
PBY321611T
PBY321611T
1_25V
YAW396-06
LM317SX
MSTBA
2.5-6-G-5.08
0.1
50V
0.1
50V
0.1
50V
0.1
50V
0.1
50V
50V
0.1
50V
30V_R
30V_L
12V
PBY321611T
PBY321611T
PBY321611T
PBY321611T
PBY321611T
PBY321611T
0.1
LM1117DT-ADJ
0.1
46
46
DVP-NW50
DVP-NW50
• Waveforms
– MAIN Board –
– MAIN Board –
4
U26
rg
(XO)
3
U16
8
(XT1)
2
U1
<zcm
(RTCXTALI)
1
U1
<zz,
(XTALI)
40 ns
1 V/DIV, 20 ns/DIV
2.9 Vp-p
88.4 ns
3.8 Vp-p
1 V/DIV, 40 ns/DIV
1 V/DIV, 20 us/DIV
30.5 us
2.1 Vp-p
1 V/DIV, 20 ns/DIV
67.8 ns
5.4 Vp-p
– DVD SERVO Board –
5
U2
6
(RFOP)
200 mV/DIV, 100 ns/DIV
7
U2
qk
(FEO)
100 mVp-p
100 mV/DIV, 1 ms/DIV
6
U2
wa
(TEO)
0.4 Vp-p
500 mV/DIV, 1 ms/DIV
500 mV/DIV, 20
µ
s/DIV
500 mV/DIV, 20
µ
s/DIV
500 mV/DIV, 20
µ
s/DIV
H
2.3 Vp-p
H
1.6 Vp-p
H
1.3 Vp-p
8
U3
<z,n
(XTALO)
9
U3
<zn,
(YU3/CVBS)
0
U3
<znv
(YUV1/C)
qa
U3
<znn
(YU2/Y)
1 V/DIV, 20 ns/DIV
4.1 Vp-p
37
n
s
1.1 Vp-p
– DVD AMP Board –
2.4 Vp-p
1 V/DIV, 40 ns/DIV
1 Vp-p
500 mV/DIV, 100 ns/DIV
4.1 Vp-p
1 V/DIV, 40 ns/DIV
74 ns
296 ns
40.7 ns
qs
U401
ql
(XTL OUT)
qd
U201
8
(XTA1)
qf
U301
<zvv
(CLKIN)
47
DVP-NW50
•
IC Block Diagrams
U5 LM4871MM
– MAIN Board –
BIAS
3
+IN
2
BYPASS
1
SHUTDOWN
4
-IN
VO2
8
GND
7
VDD
6
VO1
5
100K
100K
40K
40K
U16 AK4117VF-EZ
U29, U45 NJM2072M
CLOCK
RECOVERY
2 to 1
INPUT
SELECTOR
ERROR &
STATUS
DETECT
DETECT
X' tal
OSCILLATOR
AUDIO
I/F
CLOCK
GENERATOR
uP I/F
DAIF
DECODED
AC-3/MPEG
DETECT
Q-SUBCODE
BUFFER
1
R
2
AVDD
3
RX1
4
NC
5
RX0
6
DVDD
7
DVSS
8
XTI
9
XTO
10
LRCK
11
BICK
12
SDTO
DAUX
13
MCKO
14
UOUT
16
CDTO
17
CDTI
18
CCLK
19
CSN
20
INT1
21
AVSS
24
PDN
23
INT0
22
NC
15
Q Sub code
BUFFER
COMPARATOR
COMPARATOR
OUTPUT
STAGE
FLIP FLOP
1
TRIGGER
2
OUTPUT
3
RESET
4
GND
VCC
8
DISCHARGE
7
THRESHOLD
6
CONTROL
VOLTAGE
VOLTAGE
5
U25 NE555DR
1
2
3
4
8
7
6
5
GND
AMP OUT
GAIN CONT
INPUT
VCC
OUTPUT2
OUTPUT1
RECOVERY
TIME CAP
TIME CAP
1
1B
2
1RD
3
1Q
4
2Q
S
RD
T
Q
Q
5
2CEXT
6
2REXT/CEXT
7
GND
8
1A
16
1REXT/CEXT
15
1CEXT
14
1Q
13
2Q
12
2RD
11
2B
10
2A
9
VCC
S
RD
T
Q
Q
U6, U8, U17, U18, U19, U21, U23, U27 74HC126D
A1
2
OE1
1
Y1
3
A2
5
OE2
4
Y2
6
GND
7
OE4
13
VCC
14
A4
12
Y4
11
OE3
10
A3
9
Y3
8
U43 74HC123D
48
DVP-NW50
U202 AT25F1024AN
– DVD AMP Board –
MODE
DECODE
LOGIC
OUTPUT
BUFFER
STATUS
REGISTER
ADDRESS
DECODER
DECODER
MEMORY ARRAY
CLOCK
GENERATOR
DATA
REGISTER
1
CS
2
SO
WP
4
GND
SI
5
SCK
6
HOLD
7
VCC
8
3
U402, U403, U501, U502, U601, U602 TAS5121DKDR
RESET 4
GND 1
GND 3
PWM BP 2
DREG RTN 5
GVDD 6
M3 7
M1 10
M2 11
DVDD 12
DREG 8
DGND 9
DGND 14
GND 16
GND 18
PWM
RECEIVER
TIMING
CONTROL
&
PROTECTION
SD 13
OTW 15
DIGITAL
REGULATOR
PROTECTION
LOGIC
OT
&
UVP
DVDD DREG
DREG
DGND
PWM AP 17
PWM
RECEIVER
DVDD DREG
DGND
DREG
DREG
GATE
DRIVE
GVDD B
35
GVDD B
36
BST B
33
PVDD B
32
PVDD B
31
OUT B
30
OUT B
29
GND
28
GND
34
GATE
DRIVE
OCH
OCL
TIMING
CONTROL
&
PROTECTION
DREG
GATE
DRIVE
GVDD A
20
GVDD A
19
BST A
22
PVDD A
23
PVDD A
24
OUT A
25
OUT A
26
GND
27
GND
21
GATE
DRIVE
OCH
OCL
GVDD
GVDD
Internally
connected
to GVDD
connected
to GVDD
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