Ar : Argentina Model; Cnd : Canadian Model; Block Diagram - Power Section - Sony STR-DE897 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
4-8. BLOCK DIAGRAM — POWER SECTION —
PRE DRIVER
IC500
IN 2 PRE
DRIVE
FL-CH 8
DRIVE
FR-CH R-CH
PRE DRIVER
IC600
TUNER/
D
AUDIO IN 2 PRE
8 DRIVE
SL-CH
DRIVE
SECTION
(Page 16)
SR-CH R-CH
PRE DRIVER
IC700
IN1 PRE
C-CH DRIVE
6
DRIVE
PRE DRIVER
IC400
IN2
PRE
DRIVE
SBL-CH 8
DRIVE
T E
L 1 3 9 4 2 2 9 6 5 1 3
SBR R-CH
PROTECTOR
PROTECTOR 61 D201-203
Q200-202,255,256
D1107
D1108
D1110
HP-RY
HP_RY 62
FRONT A RY
FRONT RY 66
REAR-RY
REAR_RY 69
CENTER RY
68
C/SB RY
D1111
HP DETECT
HP DETECT
55
FRONT B RY
SP_B_RY 67
SYSTEM
CONTROL
IC1101 (4/4)
BRIDGEABLE RY 72
P0WER RY 58
w w w
.
STOP 48
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+VOUT2
12
-VOUT2
POWER AMP
11
Q571-574
-48V +48V
R-CH
+VOUT2
12
-VOUT2
11 POWER AMP
Q671-674
-48V +48V
R-CH
+VOUT1
2
-VOUT1
3 POWER AMP
Q721-724
-48V +48V
+VOUT2
12
-VOUT2
POWER AMP
11
Q471-474
-48V +48V
R-CH
+B
-B
+48V REG
-48V REG
+48V
-48V
Q220,225
Q235
PROTECTOR
TU+10V
Q210
IC210
OVERLOAD
2 7
DETECT AMP
+7V
-7V
+5V-2
+5V-1
+2.5V
+3.3V
x a o u 1 6 3
IC1904
y
+3.3V
+3.3V
3
(STBY)
REG
i
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8
RELAY
DRIVER
Q240
CURRENT OVERLOAD
RY240
DETECT DETECT
Q575,576 D575,Q577
RELAY
DRIVER
R-CH R-CH
Q2880
RY2881
RELAY
DRIVER
Q2881
RELAY
DRIVER
CURRENT OVERLOAD
Q600
DETECT DETECT
Q675,676 D675,Q677
RELAY
R-CH R-CH
DRIVER
Q400
CURRENT OVERLOAD
DETECT DETECT
Q725,726 D725,Q727
Q Q
3 7 6 3 1
RELAY
DRIVER
CURRENT OVERLOAD
Q700
DETECT DETECT
Q475,476 D475,Q477
R-CH R-CH
RECT
D801,802
IC1902
RELAY
DRIVER
+10V
3 1
Q809
REG
IC260
+15V
+7V
1 3
REG
-7V
3 2
REG
IC1001
IC265
-15V
+5V
3 1
REG
IC1031
+5V
3 1
REG
IC1901
5
BACK-UP
4
2 SWITCH
1
.
21 21
2 4
9 9 8
J2501
PHONES
R-CH
TM2880
L
FRONT B
R-CH
R
L
FRONT A
R-CH
R
RY2880
TM602(1/2)
SPEAKERS
IMPEDANCE
RY600
USE 8-16Ω
L
SURROUND
R-CH
RY400 R
TM601
• Signal path
CENTER
• R-ch is omitted due to
same as L-ch.
• Abbreviation

CND : Canadian model

TM602(2/2)
E2 : AC 120V area in E model

AR : Argentina model

L
RY700
5 1 5 0 8 9 2 4
SURROUND
R-CH BACK
R
T901
POWER
-32V REG
-32V
TRANSFORMER
Q250
D290
RELAY
SWITCH
D291
RY802,803
R861
RECT
D865
R862
R851
F901
RECT
D851-854
F1
F2
EXCEPT
E2
-32V
MODEL
D251
RY911
RELAY
DRIVER
m
Q911
T902
POWER
TRANSFORMER
c o
RECT
D921-924
EXCEPT E2 MODEL
Q921
D925 D926
STR-DE897
2
9 9
: TUNER (FM/AM)
9 8 2 9 9
E2 MODEL
S901
VOLTAGE
SELECTOR
240V
220V
S901
120V
-3
F904
-2
-1
EXCEPT AR MODEL
F902
JW809
J911
US,CND
AC
MODEL
OUTLET
~
AC IN