Sony HTC-NX300 / MHC-NX300AV Service Manual ▷ View online
22
22
HTC-NX300
MPEG VIDEO/AUDIO DECODER,
VIDEO SIGNAL PROCESSOR
IC505
MCLK 33.8MHz
DATA, BCK,
LRCK, C2PO
LRCK, C2PO
A
B
(Page 21)
(Page 21)
DIGITAL FILTER,
D/A CONVERTER
IC509
X503
27MHz
VCLK
NTB
HSY
VSY
HSYNC
VSYNC
HSYNC
VSYNC
PIXCLK
XT2
VOUTL
DATA
768FSO
384FSO
MCKO
BCK
LRCK
DA-DATA
DA-BCK
DA-LRCK
DA-XCLK
VCK-IN
VDATA0-VDATA7
SYSCLK
VOUTR
XT1
MD
MC
ML
DATA
CLK
LATCH
RSTB
4
3
5
6
LEVEL
SHIFT
IC501
IC501
CD-ROM
INTERFACE
CIRCUIT
CD-DATA
CD-BCK
CD-LRCK
CD-C2PO
MA0-MA7
MD0-MD5
D0-D15
HA0-HA2
HD0-HD7
A0-A17
A0-A11
A0-A10
D0-D7
D0-D15
A11-A17
A0-A2
D0-D7
DATA
BCK
LRCK
C2PO
MPEG
AUDIO
DECODER
MPEG
VIDEO
DECODER
VIDEO
PROCESS
CIRCUIT
AUDIO
INTERFACE
CIRCUIT
MPEG
SYSTEM
DECODER
82 90 86 85 35 36 79
15 16
13
51
22
28
29
27
15
37
45
39
57 64 1
39 20
15
93
21
73
13
47 46 44
24
128
206 207 208
167
169
178
177
157
158
166
161
104, 106, 110, 112, 111, 108,
105, 102, 99, 96, 100, 98, 114,
116, 118, 120, 121, 122, 124
54, 58, 60, 64, 68,
72, 74, 78, 76, 73, 70,
66, 62, 59, 56, 53,
202 – 204
2 – 8, 10
71 – 73
81 – 88
2 – 4, 6, 8 – 11
CPU INTERFACE
D-RAM/ROM INTERFACE
ADDRESS BUS
DATA BUS
15 16 17 18 14 80 84
22
12 – 5, 27, 26, 23
13 – 15, 17 – 21
25, 4, 28, 29, 3, 2, 30
21 – 24, 27 – 32, 20, 19
A0-A10, BA
DQ0-DQ15
D-RAM
IC507
CD MECHANISM CONTROLLER
IC505 (1/2)
ON SCREEN
DISPLAY CONTROLLER
DIGITAL RGB ENCODER
IC514
PROGRAM ROM
IC508
A0-A10
O0-O7
A11-A17
A2-A0
XOUT
XIN
NT/PAL
NT/PAL OUT
DF LATCH
CLK1
DATA1O
OSD CS
I2C/RX
DATA
CLK
I2C/TX
TEST LED
X501
10MHz
D0-D7
LATCH
OSC IN
B-BLK
OSD-SW
ROSD
GOSD
BOSD
BLK
R
G
B
V-R
V-G
V-B
BLK
R
G
B
CLK
DATA
RESET
CS
2, 3, 5, 6, 8, 9, 11, 12, 39
40, 42, 43, 45, 46, 48, 49
40, 42, 43, 45, 46, 48, 49
142, 143, 145, 148,
150, 152, 154, 155
A0-A2
LDQM
SD-CLK
UDQM
LDQM
SD-CAS
SD-RAS
SD-CS0
MWE
ROM-CS
WAIT
RESET
INT
CS
R/W
RD
8830 RESET
BUS-XRD
BUS-XWR
8830-CS
8830 HINT
BUS-XRDY
UDQM
CLK
CAS
RAS
CS
WE
CE
CLK
UDQM
LDQM
CS
RAS
CAS
WE
SD-CLK
UDQM
LDQM
CS
RAS
CAS
WE
CE
CE
D0-D7
22
33
31
28
1
3
2
15
16
17
18
4
29
30
NTSC
AUTO
PAL
S501
SYSTEM SELECT
D502
(SELF DIAGNOSIS)
18
17
19
21
20
4
8 7
10
9
OSC
BUFFER
IC504
TIMING CONTROL/
CLOCK GENERATOR
MODE
CONTROL
INPUT
INTERFACE
CIRCUIT
DIGITAL
FILTER,
NOISE
SHAPER
CIRCUIT
CIRCUIT
D/A
CONVERTER
LOW-PASS
FILER
14
11
LOW-PASS
FILER
IC101
IC101
CD. L
3
CD. R
2
SYSTEM CONTROL
(TO STR-NX300AV)
CN101 (1/4)
IIC DATA
14
DATA
CLK
DATA,
CLK
(Page 24)
IIC CLK
17
SYSTEM CONTROL
(TO STR-NX300AV)
CN101 (2/4)
24
1
20
19
8
CLOCK
CONTROL
PROTECTIVE
CIRCUIT
INTERFACE
CIRCUIT
ADDRESS
REGISTER
DATA
SELECTOR
VIDEO
RAM
CHARACTOR ROM
HORIZONTAL/
VIRTICAL
CONTROL
DISPLAY/BACKGROUND
CONTROL
HSYNC
VSYNC
OUTPUT CONTROL
D
VIDEO TIMING CONTROL
MODE/FIELD/FLAME CONTROL
SUB CARRIER BURST GENERATOR
MIX
SIGNAL
SYNC
BURST
Y-LEVEL
ADJ.
CHROMA
GEN.
Y/C FILTER
LATCH
U/V
FILTER
RGB
OSD
D/A CONVERTER
1
C
COUT
YOUT
VOUT
Y
2
3
4
S VIDEO OUT
J301
VIDEO OUT
J302
YUV0
YUV7
05
• SIGNAL PATH
: CD PLAY (AUDIO)
: CD PLAY (VIDEO)
HSYNC
VSYNC
HSYNC
VSYNC
VIDEO FREQUENCY
(27MHz)
CT503
(Page 21)
C
RESET
7-2.
BLOCK DIAGRAM – AUDIO/VIDEO CD Section –
23
23
HTC-NX300
PB EQ AMP
(DECK A)
IC611
PB LEVEL (L)
(DECK A)
CAPSTAN MOTOR
CONTROL SWITCH
Q1001
CAPSTAN
MOTOR DRIVE
Q336 – 343
1
L-CH
R-CH
R-CH
HP101
(PLAYBACK)
PB EQ AMP
(DECK B)
IC601
L-CH
R-CH
R-CH
05
R-CH
R-CH
HRPE101 (1/2)
(RECORD/PLAYBACK)
ALC
REC
EQ AMP
AMS
CIRCUIT
DOLBY NR
AMP
CIRCUIT
BIAS
CONTROL
CIRCUIT
DOLBY PASS
R-CH
L.P.F.
BUFFER
Q335
M
M1
(CAPSTAN)
HRPE101 (2/2)
(ERASE)
BIAS OSC
T621
B+
(A+7V)
R-CH
3
46
28
43
36
40
35
34
39
26
77
19 15 16 18 20 22 23 24 25
17
85 84 83 82 81 80 79 78
31
33
32
32
+
48
4
2
RV311
PB LEVEL (L)
(DECK B)
RV301
TAPE SPEED
(NORMAL)
RV1002
TAPE SPEED
(HIGH)
RV1001
REC LEVEL (L)
(DECK B)
RV301
REC BIAS (R)
(DECK B)
RV441
REC BIAS (L)
(DECK B)
BIAS OSC
Q621, 622
REC BIAS
SWITCH
Q623
ROTATION
DETECT SENSOR
(DECK A)
IC1001
RV341
BIAS
TRAP
C331, L331
REC/PB SWITCHING
IC602
SYSTEM CONTROLLER
IC101 (2/3)
DECK PROCESS
DECK A/B SELECT, PB/REC EQ AMP,
DOLBY NR AMP, ALC, AMS
IC301
AIN (L)
BIN (L)
MAOUT
PB OUT (L)
EQ OUT
(L)
MSIN
MSOUT
BIAS ON/OFF
70
120
BIAS (N)
BIAS (C)
BIAS (M)
S1004
A 120/70
B NORM/CROM
ALC ON/OFF
PB A/B
NORM/HIGH
NR ON/OFF
RM ON/OFF
REC/PB/PASS
LM ON/OFF
(DECK A 120/70)
88
S1003
(DECK A HALF)
S1001
(DECK A PLAY)
S1002
(DECK B PLAY)
S1008
(DECK B 120/70)
27
REC OUT (L)
ROUT (L)
RIN (L)
ALC (L)
EQ IN (L)
ALC
IN (L)
44
38
100
AMS-IN
91
A-SHUT
ROTATION
DETECT SENSOR
(DECK B)
IC1002
90
B-SHUT
TRIGGER
PLUNGER DRIVE
(DECK A)
Q333, 334
73
A-TRG
TC-MUTE
R/P-PASS
NR-ON/OFF
REC-MUTE
BIAS
EQ-H/N
PB-A/B
ALC-ON/OFF
TC-RELAY
A-PLAY-SW
B-PLAY-SW
A-HALF
89
S1006
(DECK B HALF)
S1009
(DECK B REC)
S1005
(DECK A REC)
B-HALF
TRIGGER PLUNGER
DECK A
TRIGGER
PLUNGER DRIVE
(DECK B)
Q331, 332
72
B-TRG
76
74
75
CAP-M-H/L
CAPM-CNT2
CAPM-CNT1
PB-L
7
9
6
4
PB-R
REC-L
REC-R
R-CH
R-CH
TRIGGER PLUNGER
DECK B
87
86
• SIGNAL PATH
: PLAYBACK (DECK A)
: PLAYBACK (DECK B)
: RECORD
D+5V
SYSTEM CONTROL
(TO STR-NX300AV)
CN101 (3/4)
7-3.
BLOCK DIAGRAM – TAPE DECK Section –
24
24
HTC-NX300
50 – 53
95, 97
KEY1, KEY0
LED BREV, LED BFWD,
LED AREV, LED AFWD
LED A1 - LED A5,
LED G1 - LED G5
37,35,27,25,23,
38,36,28,26,24
20
43
40
18
12
30
29
15
13
LED DRIVE
Q201 – 204
B+ SWITCH
Q101, 105
LED DRIVE
Q207
LED DRIVE
Q106 – 107
S201 – 209,
S211 – 228
IIC-CLK
CLK
CLK, DATA
05
DATA
LED POWER CTRL
SYSTEM CONTROLLER
IC101 (3/3)
LED CD PLAY
LED CD PAUSE
WAKE UP
D209, 210,
D213 – 215
D201 – 204,
D218 – 225
KEY
ILLUMINATION
A+5V
VIDEO CD
SECTION B+
M+12V
CD SERVO
SECTION B+
M+7V
LOADING MOTOR
DRIVER (IC702) B+
D+5V
D852 – 854
DIVEO CD
SECTION B+
A–7.5V
TAPE DECK
SECTION B+
A+7.5V
TAPE DECK
SECTION B+
D205 – 208
X-IN
X-OUT
X101
16MHz
IIC-DATA
LED DRIVE
Q205, 206
Q208 – 216
B+ SWITCH
Q103, 104
+5V
REGULATOR
IC852
+12V
REGULATOR
IC855
RESET SIGNAL
GENERATOR
IC102
+5V
(CD)
D211
(CD)
D212
M
+5V
REGULATOR
IC854
+12V
REGULATOR
IC856
RECT
D901, 902
RECT
D903, 904
+12V
REGULATOR
IC857
+12V
REGULATOR
IC501
+7V
REGULATOR
IC853
FAN MOTOR
DRIVE
Q401, 402
+7.5V
REGULATOR
Q852
–7.5V
REGULATOR
Q855
D+5V
OPTICAL
DIGITAL OUT
(IC107) B+
M401
(FAN)
(FAN)
SYSTEM CONTROL
(TO STR-NX300AV)
CN101 (4/4)
AC
18
AC
15
WAKE UP
12
RESET
D
(Page 22)
7-4.
BLOCK DIAGRAM – POWER SUPPLY Section –
25
25
7-5.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
(In addition to this, the necessary note is printed in each block)
(In addition to this, the necessary note is printed in each block)
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
5
: fusible resistor.
•
C
: panel designation.
•
U
: B+ Line.
•
V
: B– Line.
•
H
: adjustment for repair.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
E
: TAPE PLAYBACK (DECK A)
d
: TAPE PLAYBACK (DECK B)
G
: RECORD
J
: CD PLAY (AUDIO)
L
: CD PLAY (VIDEO)
c
: DIGITAL OUT
• Abbreviation
CH
: Chinese model
HK
: Hong Kong model
MY
: Malaysia model
SP
: Singapore model
TH
: Thai model
Note on Printed Wiring Board:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
x
: parts mounted on the conductor side.
•
b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
• Indication of transistor.
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
B
These are omitted.
C
E
Q
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
• Circuit Boards Location
CLAMP MOTOR board
BD board
IN SW board
INT/COUNT SW board
MAIN board
CONNECTOR board
LOAD MOTOR board
POWER board
AUDIO board
OUT SW board
PANEL TC-A board
PANEL TC-B board
LEAF SW board
PANEL board
SENSOR board
SENSOR 2 board
VIDEO board
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