STR-DG910
23
23
STR-DG910
5-7. BLOCK DIAGRAM — POWER SECTION —
(Page 17)
-45V
8
12
11
DRIVE
POWER AMP
Q671-674
CURRENT
DETECT
Q675,676
RY2891
PRE DRIVER
IC600
IN 2
+VOUT2
-VOUT2
R
L
AUDIO
OUT
SUB
WOOFER
CENTER
SURROUND
BACK
SURROUND
R-CH
R
L
R-CH
R
L
R-CH
R-CH
L-CH
R-CH
SL-CH
C-CH
R-CH
SR-CH
R-CH
SBR-CH
R-CH
TUNER/
AUDIO
SECTION
E
TUNER/
AUDIO
SECTION
F
VIDEO
SECTION
J
RY901
D251
D1001
+3.3V
F1
F2
-20V
+3.3V
(STBY)
-7V
+7V
TU+9V
-20V
RECT
D910-913
D914
D924
D915
(SUB)
D1107
D1110
OVERLOAD
DETECT
D675,Q677
6
12
2
3
DRIVE
POWER AMP
Q721-724
CURRENT
DETECT
Q725,726
-B SWITCH
Q221,228,235
RELAY
DRIVER
Q901
AC IN
DETECT
Q921
SUB TRANSFORMER
VOLTAGE CONTROL
Q922,923
PRE DRIVER
IC700
PRE DRIVER
IC500
IN 1
+VOUT1
-VOUT1
OVERLOAD
DETECT
D725,Q727
8
12
11
DRIVE
POWER AMP
Q471-474
CURRENT
DETECT
Q475,476
PRE DRIVER
IC400
IN 2
+VOUT2
-VOUT2
OVERLOAD
DETECT
D475,Q477
RY600
RY351
D290
D291
R290
R291
BRIDGEABLE RY
+B SWITCH
Q220,225
PROTECTOR
D201-204
Q200-203,255,256
9
81
17
D1111
–7V2
OVERLOAD
DETECT AMP
7
2
IC210
Q210
PROTECTOR
–45V
-B
+A5V
+5V
REG
1
3
IC1001
+3.3V
REG
1
3
IC1904
+1.2V
+1.2V
REG
1
3
IC1002
+9V
REG
1
3
IC1902
-15V
+15V
+7V2
+7V
REG
1
3
IC260
-7V
REG
2
3
IC265
+B
+45V
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
RECT
D801,802
RECT
D920-923
RECT
D851-854
T901
POWER
TRANSFORMER
TM601
TM2880
TM602 (1/2)
TM602 (2/2)
J305
(MAIN)
FRONT A
FRONT B
AC OUTLET
J911
US,CND MODEL
JW905
EXCEPT E2 MODEL
EXCEPT
AEP,UK
MODEL
EXCEPT
E2
MODEL
E2
MODEL
AC OUTLET
CN005
RY500
PHONES
J790
R-CH
FRONT A RY
FRONT B RY
SW RY
C/SB/REAR RY
HP DETECT
FRONT_RY
PROTECTOR
HP DETECT
STOP
94
SUB T
25
SP_BRY
BRIDGEABLE RY
20
POWER_RY
23
SW_RY
21
C/SB RY
FRONT A RY
HP DETECT
FRONT B RY
8
BRIDGEABLE RY
SW RY
C/SB/REAR RY
SYSTEM
CONTROL
IC1010 (7/7)
PRE
DRIVE
PRE
DRIVE
SW-CH
-45V +45V
SBL-CH
6
2
3
DRIVE
POWER AMP
Q521-524
CURRENT
DETECT
Q525,526
IN 1
+VOUT1
-VOUT1
OVERLOAD
DETECT
D525,Q527
PRE
DRIVE
-45V
+45V
+45V
-45V +45V
PRE
DRIVE
R810
R2 AC
R2 AC
HP RY
R811
R851
R852
JW907
T903
POWER
TRANSFORMER
AC IN
~
F901
F905
S901
S901
E2 MODEL
240V
220V
120V
VOLTAGE
SELECTOR
-1
-2
-3
F904
F902
SPEAKERS
IMPEDANCE
USE 8-16
Ω
RELAY
DRIVER
Q600
RY400
RELAY
DRIVER
Q400
RY700
RELAY
DRIVER
Q700
RELAY
DRIVER
Q351
RY801
RELAY
DRIVER
Q809
RELAY
DRIVER
Q2890
RY2881
RELAY
DRIVER
Q2880
RELAY
DRIVER
Q500
RELAY
SW
-20V REG
Q250
• Signal path
: TUNER (FM/AM)
• R-ch is omitted due to
same as L-ch.
• Abbreviation
CND : Canadian model
E2 : AC 120V area in E model
(Page 19)
(Page 17)
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