Block Diagram - Damp Section - Sony STR-DB900 Service Manual

4-3. BLOCK DIAGRAM — DAMP SECTION —
DATA-L/R
DATA-C/SW
DATA-SL/SR
IC326
DATA-SB
1 7 BCK
BCKO
3 5 LRCK
LRCKO
SCK
6 2
SCK
B
AUDIO DSP
SECTION
(Page 14)
AMP
CONT
EN
I-LIMIT
D
P-STOP
DISPLAY
SECTION
(Page 16)
STR-DB900
CLOCK OSC
IC325
R-CH
2
X300
49.125MHz
4
PCM/PWM
PROCESSOR
IC301
28
DATA-L/R
43 DATA OUTL1+ 24
BCK
44 BCK
LRCK
OUTL1- 21
45 LRCK
SCK
64 XFSIIN
INIT
INIT
41
MUTE
39 NSPMUTE
SCDT
OUTL2+ 15
38
SCDT
SHIFT
37 SCSHIFT
LATI-L/R
OUTL2- 18
36 SCLATCH
OUTL1+ 10
OUTL1- 7
73 FSOCKO R-CH
OUTL2+ 1
74 FSOI
OUTL2- 4
77
PCM/PWM
PROCESSOR
28
IC308
DATA-C/SW
OUTL1+ 24
43 DATA
BCK
44
BCK
LRCK
OUTL1- 21
45
LRCK
SCK
64
XFSIIN
INIT
41
INIT
MUTE
39 NSPMUTE
SCDT OUTL2+ 15
38
SCDT
SHIFT
37
SCSHIFT
LATI-C/SW OUTL2- 18
36
SCLATCH
74 FSOI
OUTL2+ 10
OUTL2- 1
77
PCM/PWM
PROCESSOR
28
IC313
DATA-SL/SR
OUTL1+ 24
43 DATA
BCK
44 BCK
LRCK
OUTL1- 21
45
LRCK
SCK
64 XFSIIN
INIT
41
INIT
MUTE
39 NSPMUTE
SCDT
OUTL2+ 15
38
SCDT
SHIFT
37 SCSHIFT
LATI-SL/SR
OUTL2- 18
36
SCLATCH
OUTL1+ 10
OUTL1- 7
R-CH
74
FSOI OUTL2+ 1
OUTL2- 4
77
PCM/PWM
PROCESSOR
28
IC605
DATA-SB
OUTL1+ 24
43 DATA
BCK
44 BCK
LRCK
OUTL1- 21
45 LRCK
SCK
64 XFSIIN
INIT
41 INIT
MUTE
39 NSPMUTE
SCDT
OUTL2+ 15
38
SCDT
SHIFT
37 SCSHIFT
OUTL2- 18
LATI-SB
36
SCLATCH
74 FSOI
LPF
HEADPHONE AMP
IC320
IC321
3
1 3 1
2
5
7 5 7
6
15V-53V
DIGITAL POWER AMP
IC306
5 HIN HOUT 3
BOOSTER
DEAD TIME
LPF
Q304,309
LOUT 8
IC302
6 LIN
4
HSCT
5 HIN HOUT 3
BOOSTER
DEAD TIME
LPF
Q313,328
8
LOUT
IC303
6 LIN
HSCT 4
DIGITAL POWER AMP THP301
IC307
15V-53V
DIGITAL POWER AMP
IC319
5 HIN HOUT 3
BOOSTER
DEAD TIME LPF
Q334,335
LOUT 8
IC309
6 LIN
HSCT 4
5 HIN HOUT 3
BOOSTER
DEAD TIME
Q336,337 LPF
LOUT 8
IC310
6 LIN
HSCT 4
DIGITAL POWER AMP
THP303
IC328
5
1
6
15V-53V
WOOFER AMP
IC311 DIGITAL POWER AMP
IC329
5 HIN HOUT 3
BOOSTER
DEAD TIME
LPF
Q338,339
LOUT 8
IC314
6 LIN
4
HSCT
5 HIN HOUT 3
BOOSTER
DEAD TIME
LPF
Q340,341
8
LOUT
IC315
6 LIN
HSCT 4
THP304
DIGITAL POWER AMP
IC330
THP601
15V-53V
DIGITAL POWER AMP
IC603
5 HIN HOUT 3
BOOSTER
DEAD TIME
LPF
Q601,602
LOUT 8
IC601
6 LIN
HSCT 4
5 HIN HOUT 3 BOOSTER
DEAD TIME
LPF
Q603,604
LOUT 8
IC602
6 LIN
4
HSCT
DIGITAL POWER AMP
IC604
Q329
1
PROTECT
6
CONTROL
4
IC327
Q316
15 15
RY301
PH-RY
RELAY DRIVER
Q305,306
I.PROTECT
Q356 HPSW
D316
V.PROTECT
Q317,318
D322
TEMP.DETECT
Q346,347
R-CH
I.PROTECT
Q360
D321
V.PROTECT
Q321,322
D315
TEMP.DETECT
Q350,351
RY302
RELAY
RELAY DRIVER
Q307,308
I.PROTECT
Q362
D323
V.PROTECT
Q323,324
D317
TEMP.DETECT
Q352,353
R-CH
D601
TEMP.DETECT
Q608,610
I.PROTECT
Q612
D602
V.PROTECT
Q602,606
Q609 +12V(DAMP)
DELAY
AVDD BUFFER
3
(+5V)
IC324(1/2), IC322
Q310
Q327
+12V(DAMP)
DELAY
DVDD BUFFER
3
(+3.3V)
IC324(2/2), IC323
Q311
Q315 Q314
STR-DB900
J401
PHONES
TM301
FRONT
L
TM302
FRONT
R
TM303
CENTER
SPEAKERS
IMPEDANCE USE
4-16Ω
J301
AUDIO OUT
SUB WOOFER
TM304
SURROUND
L
TM305
SURROUND
R
TM601
SURROUND
BACK
+5V
REG.
+12V
1
(GATE)
• R-ch is omitted due to same as L-ch.
+3.3V
• Signal path
REG.
1
: FM