Sony DAV-HDX274 / HCD-HDX274 Service Manual ▷ View online
HCD-HDX274
HCD-HDX274
25
25
DQ0 – DQ7
HD0 – HD7
A-1, A0 – A20
HA0 – HA21
OPTICAL PICK-UP
BLOCK
RF AMP, SERVO DSP,
MPEG DECODER,
HDMI TRANSMITTER
IC1101
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC1201
AUTOMATIC POWER
CONTROL (FOR CD)
Q1102-1
DVDRFIP
10
DVDA
6
DVDB
7
DVDC
8
DVDD
9
RF
MA
11
MB
12
MC
13
MD
14
VOA/A
VOB/B
VOC/C
VOD/D
VOD/D
TNI
17
VOE/E+G
TPI
18
VOF/F+H
V2O
28
VC
LDO1
22
LD (780)
AUTOMATIC POWER
CONTROL (FOR DVD)
Q1102-2
LDO2
21
LD (650)
FOO
41
CD ON
SWITCH
Q1101-1
DVD ON
SWITCH
Q1101-2
SWITCH
Q1101-2
VR (780)
MSW
LIMITSW
54
52
53
VR (650)
FCS+
MSW
MDI1
19
MDI2
20
PD
LIMIT
Q1103
XROMCS
CE
SD-RAM
IC1104
X1101
27MHz
36
FCS–
37
1
TRO
40
TRK+
35
TRK–
34
4
FMO
37
SL+
29
SL–
30
10
DMO
36
SP+
27
SP–
28
31
32
32
41
46
47
47
13
OP_INP
35
45
BCK
ABCK
226
ALRCK
223
ACLK
225
79, 80,
82 – 86, 89
29, 31, 33, 35,
38, 40, 42, 44
92, 77, 56 – 62, 74 – 67,
91, 63, 64, 75, 87
45, 25 – 18, 8 – 1,
48, 17, 16, 9, 10
DQ0 – DQ15
RD0 – RD15
A0 – A11
RA0 – RA11
2, 4, 5, 7, 8, 10, 11, 13, 42,
44, 45, 47, 48, 50, 51, 53
121 – 119, 117 – 113,
129 – 122
140, 141, 143, 144,
155 – 150, 139, 149
23 – 26,
29 – 34, 22, 35
76
XT
ALI
239
26
XRD
OE
78
28
XWR
WE
66
11
RESET
12
BA0
BA0
137
20
BA1
BA1
138
21
DRCLK
CLK
146
38
CKE
CLKE
147
37
DQM0
LDQM
111
15
DQM1
UDQM
132
39
RAS
/RAS
135
18
CAS
/CAS
134
17
RCS
/CS
136
19
R
WE
/WE
133
DIR_DO
231
16
• SIGNAL PATH
: CD/DVD PLAY
: AUDIO
: AUDIO
: VIDEO
FOCUS
COIL DRIVE
TRACKING
COIL DRIVE
SLED
MOTOR DRIVE
SPINDLE
MOTOR DRIVE
REGULATOR
MUTE123
MUTE123
157
19
MUTE
MUTE34
158
20
TSD_M
TSD-M
130
22
IOPMON
39
40
8
PS 21
BUFFER
BUFFER
RF+3.3V
SDA
SDA
102
5
SCL
SCL
101 112
6
EEWP
WE
7
REGO2
REGO1
REGO1
DVD_SOD
IFSDO
32
97
DVD XIFCS
xIFCS
37
99
51
DVD_SID
IFSDI
31
M_ST
52
100
DVD_SCO
IFSCK
33
98
DVD_XIFBUSY
IFBSY
34
110
MTK_RST
XSYSRST
38
V_SEL1
83
108
SYSTEM CONTROLLER
IC501 (1/4)
LRCK
MCK
D2
D3
D1
189
C
191
Y
183
B/Cb/Pb
185
Y/G
182
R/Cr/Pr
VIDEO AMP, 75
ohm DRIVER
IC404
10 CY IN
12 Cb IN
14 Cr IN
4 CVBS IN
2 C IN
6 Y IN
3
MUTE1
13
MUTE2
5
YC_MIX
V_SEL0
82
KHM-310CAB
or
KHM-313CAB
J404
COMPONENT
VIDEO OUT
Y
P
B
/C
B
P
R
/C
R
J402 (1/2)
23
CVBS OUT
20
CY OUT
18
Cb OUT
16
Cr OUT
VIDEO OUT
FLASH ROM
IC1102
EEPROM
IC1103
XT
ALO
238
A
AUDIO_BUS
HDMI_BUS
B
D
F
XRST
204
ASDATA2
205
ASDATA1
203
ADIN(DATA)
DIR_AUDIO
202
ASDATA0
DMPORT_VIDEO
E
V_SEL2
TX0P
TX0N
TX1P
TX1N
TX2P
TX2N
TCKP
TCKN
HTPLG
174
173
177
176
179
171
170
DDC_DA
DDC_CLK
TX0P
TX0N
TX1P
TX1N
TX2P
TX2N
TCKP
TCKN
HPD
SDA
SCL
159
161
MC_DATA(ADIN) 206
162
180
BUFFER
IC4502
AUDIO SELECTOR
IC3003
1 A
2 B
6
A/B
5
Y
VinL
14
13
VinR
BCK
7 LRCK
8
8
6 SCKI
A/D CONVERTER
IC707
9
DOUT
C
AUDIO1
R-CH
DIGITAL AUDIO
INTERFACE RECEIVER
IC702
DO (O)
35 36
DI (I)
CL
(I)
38
CE (I)
37
14
BCK (O)
LRCK (O)
15
CKOUT
(O)
13
CSFLAG (O)
25
ERROR (O)
34
XST
ATE (O)
17
XMODE (I)
48
DIR_DI
230
DIR_CL
227
DIR_CE
221
SPBCK
200
SPLRCK
201
SPMCK
198
DIR_CSFLAG
214
DIR_ERROR
DIR_XST
ATE
198
5 DIN2 (I)
OPTICAL
RECEIVER
IC301
TV/VIDEO
DIGITAL IN
OPTICAL
TV/VIDEO
DIGITAL IN
COAXIAL
J302
4 DIN1 (I)
WAVE
SHAPER
IC302
22
XOUT (O)
XIN (I)
21
X701
12.288MHz
24
DATA (O) 16
AUDIO- (O)
SECTION 6
DIAGRAMS
6-1. BLOCK DIAGRAM - RF SERVO/VIDEO Section -
(Page 27)
(Page 26)
(Page 26)
(Page 26)
(Page 26)
(Page 26)
HCD-HDX274
HCD-HDX274
26
26
6-2. BLOCK DIAGRAM - CHANGER/HDMI/DMPORT/TUNER Section -
TX0P
TX0N
TX1P
TX1N
TX2P
TX2N
TCKP
TCKN
7
TMDS DATA0 +
HDMI OUT
9
TMDS DATA0 –
4
TMDS DATA1 +
6
TMDS DATA1 –
1
TMDS DATA2 +
3
TMDS DATA2 –
10
TMDS CLOCK +
12
TMDS CLOCK –
16
SDA
15
SCL
18
+5V POWER
19
HPD
HPD
CN1701
R-CH
LEVEL SHIFT
IC1705
LEVEL SHIFT
Q1701
13
CEC
+5V
REGULATOR
IC1707
SW+9V
SDA
SCL
B
HDMI BUS
F
XRST
D
DMPORT_VIDEO
IO_DI
P0
FIN
CHANGER CONTROL
IC650
24
7
P1
RIN
23
OUT1
4
OUT2
2
9
LD/ST MOTOR DRIVER
IC701
M761
(LD/ST MOTOR)
D SENSOR
IC751
(ST U/D)
ROTARY
ENCODER
S781
M
P4
FIN
20
7
P5
RIN
19
P8
12
OUT1
4
OUT2
2
9
BU U/D MOTOR DRIVER
IC711
M762
(BU U/D MOTOR)
M
S761 (SUB TRAY OUT)
P11
9
S731 (SUB TRAY IN)
S721 (MAIN TRAY IN/OUT)
P10
10
P9
11
P12
IN
OPEN
8
86
DMPORT_TX_OUT
DMPORT_RX_IN
DMPORT_DET
30
29
89
DI1
26
IO_CLK 88
CLK
3
IO_CE 84
LATCH
4
IO_RESET 85
DO1 15
DO2 25
CLKO 14
LATCHO 13
RESET_B
2
CEC_TX_OUT 22
CEC_RX_IN 3
IO-DO 87
CHANGER CONTROL,
AUDIO/VIDEO CONTROL
IC651
DI1
26
DI2
16
CLK
3
LATCH
4
RESET_B
2
DISC SENSOR
Q751
DO2 25
9 – 12
P1
1 – P8
(MD)
ROTARY
ENCODER
S771
5 – 8
P15 – P12
SYSTEM CONTROLLER
IC501 (2/4)
: VIDEO
CEC DATA
SWITCH
Q9724, 9726,
Q9728, 9729
P6 18
P7 17
E
P1 23
V_SEL2
5
RXD
6
TXD
7
DET
13
Lch
14
Rch
17
VIDEO
CN204
DMPORT
AUDIO SELECTOR
IC411
R-CH
R-CH
72 ST_DI
91
MONO/ST_DET
90
A.CAL_MIC
_LEVEL
28
DC_CONT
70 ST_DO
69 ST_CLK
71 ST_CE
68 TUNED
69 ST_CLK
71 ST_CE
68 TUNED
R-CH
TUNER (FM/AM)
AM
FM ANT
AM ANT
L-CH
R-CH
DIN
TUNED
DO
CLK
CE
FM 75
Ω
COAXIAL
ANTENNA
4 Y3
2
3
Y2
Y
1 Y0
10
A
9
B
J402 (2/2)
TV/VIDEO
AUDIO IN
L
R
R-CH
Q413
Q412
LINE AMP
IC410
XIN
13
XOUT
15
X501
5MHz
• SIGNAL PATH
: TUNER
: AUDIO
• R-ch is omitted due to same as L-ch.
: AUDIO IN
AUDIO IN/
A.CAL MIC
J100
5 Y1
LINE AMP
IC104
LINE AMP
IC105
MUTING
Q115
MUTING
CONTROL
Q111
GAIN
CONTROL
Q112, 113
MIC_GAIN
26
C
AUDIO1
EEPROM_SDA/I2C_DATA
EEPROM_SCL/I2C_CLK
47
48
EEPROM
IC510
5
6
SDA
SCL
LINE AMP
IC202
(Page 25)
(Page 25)
(Page 25)
(Page 25)
(Page 25)
HCD-HDX274
HCD-HDX274
27
27
6-3. BLOCK DIAGRAM - AMP Section -
DIGITAL POWER AMP
IC3150
TB100
31
11
DATA
LAT1
INIT
SOFTMUTE
INIT
SOFTMUTE
SCDT
SHIFT
SHIFT
OUTL1(+)
9
OUTL2(–)
6
OUTR1(+)
4
OUTR2(–)
48
XFSOIN
37
FSOCKO
38
FSOI
14
XFSOOUT
OVER LOAD
DETECT
Q3151, 3152
SYSTEM CONTROLLER
IC501 (3/4)
SPEAKER
TB3901
SPEAKER
FRONT L
FRONT R
SUR L
SUR R
SUB
WOOFER
CENTER
MCK
BCK
LRCK
BCK
LRCK
OVF1
DC DETECT
Q3551
M+12V
+32V
D3551
A
AUDIO_BUS
G
DIAG
STREAM PROCESSOR
IC3010
6 PWM_A
OUT_A
14
5
PWM_B
/RESET
4
/SD
36 XFSIIN
30 BCK
29 LRCK
30 BCK
29 LRCK
HPOUTL1
HPOUTL2
HPOUTL2
HPOUTR1
HPOUTR2
HPOUTR2
21 SCDT
22 SCSHIFT
23 SCLATCH
27 INIT
19 SOFTMUTE
24 OVFFLAGR
25 FLAGLOVF
22 SCSHIFT
23 SCLATCH
27 INIT
19 SOFTMUTE
24 OVFFLAGR
25 FLAGLOVF
D1
HP_SW
HP_MUTE
OVER LOAD
DETECT
Q3201, 3202
OVER LOAD
DETECT
Q3301, 3302
OVER LOAD
DETECT
Q3251, 3252
65
56
49
56
49
X3051
49.152MHz
R-CH
OSC BUFFER
IC3051
31
11
DATA
LAT2
INIT
SOFTMUTE
INIT
SOFTMUTE
SCDT
SHIFT
SHIFT
OUTL1(+)
9
OUTL2(–)
48
XFSOIN
38
FSOI
14
XFSOOUT
31
11
DATA
LAT3
INIT
SOFTMUTE
INIT
SOFTMUTE
SCDT
SHIFT
SHIFT
OUTL1(+)
9
OUTL2(–)
6
OUTR1(+)
4
OUTR2(–)
48
XFSOIN
38
FSOI
MCK
BCK
LRCK
BCK
LRCK
OVF2
STREAM PROCESSOR
IC3030
36 XFSIIN
30 BCK
29 LRCK
30 BCK
29 LRCK
21 SCDT
22 SCSHIFT
23 SCLATCH
27 INIT
19 SOFTMUTE
24 OVFFLAGR
22 SCSHIFT
23 SCLATCH
27 INIT
19 SOFTMUTE
24 OVFFLAGR
OVF1
25 FLAGLOVF
D3
D1
D2
D3
D2
D3
MCK
BCK
LRCK
BCK
LRCK
OVF1
STREAM PROCESSOR
IC3020
36 XFSIIN
30 BCK
29 LRCK
30 BCK
29 LRCK
21 SCDT
22 SCSHIFT
23 SCLATCH
27 INIT
19 SOFTMUTE
24 OVFFLAGR
22 SCSHIFT
23 SCLATCH
27 INIT
19 SOFTMUTE
24 OVFFLAGR
D2
DAMP_LATCH1
LAT2
LAT1
SHIFT
SCDT
DAMP_LATCH2
1
2
2
DAMP_SCD
DAMP_SHIFT
LAT3
66
53
53
JACK2
HP_SW
HP_MUTE
HP_MUTE
DAMP_LATCH3
19
A.CAL_OUT_LEVEL
INIT
44
51
50
45
DAMP_INIT
SOFTMUTE
DAMP_SOFT_MUTE
OVF1
OVERFLOW1
OVF2
OVERFLOW2
42
DRIVE_RST (EN)
43
DRIVE_OCP (DIAG)/
POWER_DET
57
DC_DET
28 – 30
OUT_B
25 – 27
DIGITAL POWER AMP
IC3300
6 PWM_A
OUT_A
14
5
PWM_B
/RESET
4
/SD
28 – 30
OUT_B
25 – 27
PROTECT DETECT
Q3552 – 3555
DIGITAL POWER AMP
IC3400
14 PWM_B
OUT_B
6
5
PWM_A
/RESET
4
/SD
25 – 27
OUT_A
28 – 30
DIGITAL POWER AMP
IC3250
6 PWM_A
OUT_A
14
5
PWM_B
/RESET
4
/SD
28 – 30
OUT_B
25 – 27
DIGITAL POWER AMP
IC3500
14 PWM_B
OUT_B
6
5
PWM_A
/RESET
4
/SD
25 – 27
OUT_A
28 – 30
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.
• SIGNAL PATH
: AUDIO
M
M3000
(FAN)
+
–
+
–
+
–
+
–
+
–
6
OUTR1(+)
4
OUTR2(–)
R-CH
R-CH
R-CH
FAN MOTOR
DRIVE
Q3000 – 3002
25 FLAGLOVF
PHONES
J101
• R-CH is omitted due to same as L-CH.
45
43
41
39
43
41
39
HEADPHONE
AMP
IC3001
MUTING CONTROL
Q3081
MUTING
Q117, 119
MUTING
Q116, 118
+
–
D3071
D3072
D3073
D3072
D3073
(Page 25)
(Page 28)
HCD-HDX274
HCD-HDX274
28
28
6-4. BLOCK DIAGRAM - PANEL/POWER SUPPLY Section -
POWER CONTROL
IC921
D902
DZ904
D908
D906, 907
D905
RESET
SYSTEM CONTROLLER
IC501 (4/4)
AMP+32V
RESET
SWITCH
Q503
8
CLK
9
STB
7
DIN
ND100
FLUORESCENT
INDICATOR
TUBE
GR1 – GR12
SG2 – SG16
42 – 31
15 – 29
24 FL_D_OUT/LED_DATA
21 FL_CLK/LED_CLK
23 FL_STB
21 FL_CLK/LED_CLK
23 FL_STB
81 LED_LATCH
FLUORESCENT INDICATOR
TUBE DRIVER
IC100
4
CLK
5
LCK
3
DATA
LED DRIVER
IC103
Q8
Q9
15
(ORG)
(GRN)
14
D108
DISC 1
Q6
Q7
13
(ORG)
(GRN)
12
D107
DISC 2
Q4
Q5
11
(ORG)
(GRN)
10
D106
DISC 3
Q2
Q3
9
(ORG)
(GRN)
8
D105
DISC 4
Q0
Q1
7
(ORG)
(GRN)
6
D104
DISC 5
LED DRIVE
Q101
LED DRIVE
Q102
LED DRIVE
Q103
LED DRIVE
Q104
LED DRIVE
Q105
LED DRIVE
Q106
LED DRIVE
Q107
LED DRIVE
Q108
LED DRIVE
Q109
LED DRIVE
Q110
KEY0 – KEY2
S100 – 111, 922
(FRONT & TOP PANEL KEY)
97, 95, 94
SIRCS_IN
REMOTE CONTROL
RECEIVER
IC101
4
EN_B
11
EN_A
10
KEY INT
74
(AC IN)
F901
LINE FILTER
LF901, 902
RECT
D901
TH901
9 D
7 VIN
4 VCC
1 ZC
2 FB
POWERCONTROL
IC901
3 D
5 FB/OLP
1
OCP/
SYNC
SYNC
4 VCC
RIPPLE FILTER
Q922
ISOLATOR
PC902
ISOLATOR
PC901
ISOLATOR
PC903
B+ SWICH
Q901
T903
SUB POWER
TRANSFORMER
T901
MAIN POWER
TRANSFORMER
D910
RECT
D931
RECT
D912
A+12V, M+12V
A+9V
POWER ON/OFF
CONTROL
Q943, 947, 949, 950
SHUNT
REGULATOR
IC931
SHUNT
REGULATOR
IC922
ISOLATOR
PC904
+12V
REGULATOR
IC941
RECT
D916
M+9V
AUDIO+5V
LED+6V
B+ SWITCH
Q945
RECT
D911
RECT
D947
+5V
REGULATOR
IC505
+9V
REGULATOR
IC413
SERVO DSP+1.8V
+1.8V
REGULATOR
IC3050
AMP+1.8V
E+3.3V
+1.8V
REGULATOR
IC1110
RESET SIGNAL
GENERATOR
IC503
RF+3.3V
DMPORT+5V
SW+9V
+5V
REGULATOR
IC201
+5V
REGULATOR
IC502
+3.3V
REGULATOR
IC102
SW+3.3V
D+3.3V
+3.3V
REGULATOR
IC506
SERVO+3.3V
+3.3V
REGULATOR
IC1708
SERVO+3.3V
+3.3V
REGULATOR
IC1105
+3.3V
REGULATOR
IC1107
A+5V
+5V
REGULATOR
IC507
V+5V
+5V
REGULATOR
IC620
VFL
FOR FLUORESCENT
INDICATOR TUBE
RECT
D100, 101
OSC
Q100
FL
FL
FL
T100
DC/DC
CONVERTER
D502
BU+3.3V
D504
12
AC_CUT 20
P_CONT3 41
P_CONT2 40
P_CONT1 39
M+13V
ROTARY
ENCOCER
S112
VOLUME
DIAG
G
DC DETECT
Q631, 632
POWER ON/OFF
CONTROL
Q930 – 932
STANDBY
CONTROL
Q921
(Page 27)
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