STR-DE897
21
21
4-8. BLOCK DIAGRAM — POWER SECTION —
POWER AMP
Q571-574
CURRENT
DETECT
Q575,576
RY240
RY2881
RY600
RY2880
PRE DRIVER
IC500
SPEAKERS
IMPEDANCE
USE 8-16
Ω
R
L
FRONT B
L
SURROUND
SURROUND
BACK
CENTER
R
R-CH
R-CH
R-CH
FL-CH
FR-CH
SL-CH
C-CH
R-CH
SBR
R-CH
SR-CH
R-CH
RY911
RY802,803
D251
F1
F2
-32V
+3.3V
(STBY)
+2.5V
+5V-1
-7V
+7V
TU+10V
-48V
RECT
D921-924
D925
Q921
D926
D1110
D1111
D1107
D1108
OVERLOAD
DETECT
D575,Q577
POWER AMP
Q721-724
CURRENT
DETECT
Q725,726
-48V REG
Q235
+48V REG
Q220,225
RELAY
DRIVER
Q911
PRE DRIVER
IC700
PRE DRIVER
IC400
OVERLOAD
DETECT
D725,Q727
POWER AMP
Q671-674
CURRENT
DETECT
Q675,676
PRE DRIVER
IC600
OVERLOAD
DETECT
D675,Q677
RELAY
DRIVER
Q240
RELAY
DRIVER
Q2880
RELAY
DRIVER
Q600
RY400
RELAY
DRIVER
Q400
RY700
R
L
R-CH
-32V
D290
D291
RELAY
DRIVER
Q700
PROTECTOR
D201-203
Q200-202,255,256
IC210
+48V
-B
+3.3V
IC1901
+5V-2
IC1001
IC1904
IC1902
-15V
+15V
IC260
IC265
IC1031
PROTECTOR
Q210
+B
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
-48V +48V
R-CH
R-CH
R-CH
RECT
D801,802
RECT
D865
RECT
D851-854
T901
POWER
TRANSFORMER
TM2880
TM602(1/2)
TM601
TM602(2/2)
R
FRONT A
L
R-CH
J2501
PHONES
HP-RY
FRONT B RY
FRONT A RY
REAR-RY
CENTER RY
HP CTRL
HP-RY
HP DETECT
FRONT B RY
FRONT A RY
REAR-RY
CENTER RY
SBL-CH
POWER AMP
Q471-474
CURRENT
DETECT
Q475,476
OVERLOAD
DETECT
D475,Q477
-48V +48V
-48V +48V
-48V +48V
RELAY
DRIVER
Q2881
RELAY
DRIVER
Q809
R861
R862
R851
RELAY
SWITCH
-32V REG
Q250
F902
JW809
T902
POWER
TRANSFORMER
~
AC IN
S901
VOLTAGE
SELECTOR
240V
220V
120V
J911
AC
OUTLET
US,CND
MODEL
EXCEPT AR MODEL
EXCEPT
E2
MODEL
E2 MODEL
EXCEPT E2 MODEL
F901
F904
S901
-3
-2
-1
• 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
AR : Argentina model
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299