Read Sony DAV-HDX275 / DAV-HDX277WC / DAV-HDX279W / DAV-HDX475 / DAVHDX576WF / DAV-HDX675 / HCD-HDX275 / HCD-HDX277WC / HCD-HDX279W / HCD-HDX475 / HCD-HDX576WF / HCD-HDX675 Service Manual online
HCD-HDX275/HDX277WC/HDX279W/HDX475/HDX576WF/HDX675
HCD-HDX275/HDX277WC/HDX279W/HDX475/HDX576WF/HDX675
31
31
6-4. 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 (4/5)
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
R
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)
+
–
TB101
SPEAKER
FRONT L
+
–
+
–
+
–
+
–
+
–
K
6
OUTR1(+)
4
OUTR2(–)
R-CH
R-CH
R-CH
BCK
LRCK
BCK
LRCK
FAN MOTOR
DRIVE
Q3000 – 3002
25 FLAGLOVF
PHONES
J101
(HCD-HDX279W/HDX576WF)
HCD-HDX275/
HDX277WC/
HDX475/HDX675
HDX277WC/
HDX475/HDX675
• 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
+
–
FRONT R
R-CH
+
–
D3071
D3072
D3073
D3072
D3073
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(Page 32)
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