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
LAT1
INIT
SOFTMUTE
SCDT
SHIFT
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
OVF1
DC DETECT
Q3551
M+12V
+32V
D3551
DIAG
STREAM PROCESSOR
IC3010
5
4
21 SCDT
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
X3051
49.152MHz
R-CH
LAT2
INIT
SOFTMUTE
SCDT
SHIFT
LAT3
INIT
SOFTMUTE
SCDT
SHIFT
MCK
BCK
LRCK
OVF2
STREAM PROCESSOR
IC3030
21 SCDT
22 SCSHIFT
23 SCLATCH
27 INIT
19 SOFTMUTE
24 OVFFLAGR
OVF1
D3
D1
D2
D3
MCK
BCK
LRCK
OVF1
STREAM PROCESSOR
IC3020
21 SCDT
22 SCSHIFT
23 SCLATCH
27 INIT
19 SOFTMUTE
24 OVFFLAGR
D2
LAT2
LAT1
SHIFT
SCDT
LAT3
HP_SW
HP_MUTE
INIT
SOFTMUTE
OVF1
OVF2
DIGITAL POWER AMP
IC3300
PROTECT DETECT
Q3552 – 3555
DIGITAL POWER AMP
IC3400
5
4
DIGITAL POWER AMP
IC3250
DIGITAL POWER AMP
IC3500
5
4
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
+
–
+
–
+
–
+
–
+
–
R-CH
R-CH
R-CH
BCK
LRCK
BCK
LRCK
FAN MOTOR
DRIVE
Q3000 – 3002
PHONES
J101
(HCD-HDX279W/HDX576WF)
HCD-HDX275/
HDX277WC/
HDX475/HDX675
• R-CH is omitted due to same as L-CH.
MUTING CONTROL
Q3081
MUTING
Q117, 119
MUTING
Q116, 118
+
–
FRONT R
R-CH
+
–
D3071
D3072
D3073