Block Diagram - Power Section - Sony STR-DE997 Service Manual

STR-DE997
4-7. BLOCK DIAGRAM — POWER SECTION —
FL-CH
FR-CH R-CH
TUNER/
D
AUDIO
SL-CH
SECTION
(Page 13)
SR-CH R-CH
C-CH
SBL-CH
SBR R-CH
PROTECTOR
HP_RY
SP_A_RY
REAR_RY
CENTER_RY
HP_CTRL
SP_B_RY
SYSTEM
CONTROL
IC1101 (5/5)
BRIDGEABLE RY
PW-RY
SUB-T
VOLT_DETECT_STOP
STR-DE997
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PRE DRIVER
IC500
+VOUT2
12
IN 2 PRE
8 DRIVE -VOUT2
DRIVE
11 POWER AMP
Q571-574
-48V +48V
PRE DRIVER
IC600
+VOUT2
IN 2 PRE 12
DRIVE -VOUT2
8
DRIVE
POWER AMP
11
Q671-674
-48V +48V
PRE DRIVER
IC700
+VOUT1
IN1 PRE 2
DRIVE -VOUT1
6
DRIVE
3 POWER AMP
Q721-724
-48V +48V
PRE DRIVER
IC400
+VOUT2
IN2 PRE 12
DRIVE -VOUT2
8
DRIVE
11 POWER AMP
Q471-474
-48V +48V
PROTECTOR
23
D201-203
Q200-202,255,256
D1107
D1108
D1110
HP-RY
42
FRONT A RY +48V REG
18 +48V
Q220,225
REAR-RY
21
PROTECTOR
CENTER RY
Q210
20
IC210
D1111
HP DETECT
OVERLOAD
24
2 7
DETECT AMP
FRONT B RY
19
45
25
5
60
CURRENT OVERLOAD
DETECT DETECT
Q575,576 D575,Q577
R-CH R-CH
R-CH
CURRENT OVERLOAD
DETECT DETECT
Q675,676 D675,Q677
R-CH R-CH
R-CH
CURRENT OVERLOAD
DETECT DETECT
Q725,726 D725,Q727
CURRENT OVERLOAD
DETECT DETECT
Q475,476 D475,Q477
R-CH
R-CH R-CH
+B
-B
-48V REG
-48V
Q235
TU+10V
+7V
-7V
IC1001
+5V
+5V-2 3 1
REG
+5V-1
IC1901
+2.6V 5
+2.6V/+3.3V
4
REG
+3.3V 2
D1001
IC1021 IC1011
+3.3V
+3.3V +5V
3 1 3 1
(STBY)
REG REG
+5V
(STBY)
18 18
R-CH
TM2880
RELAY
DRIVER
Q240
R-CH
RY240
RELAY
DRIVER
Q2880
RY2881
RELAY
DRIVER R-CH
Q2881
RY2880
TM602(1/2)
RY600
RELAY
DRIVER
Q600
R-CH
RY400
RELAY
DRIVER
Q400
TM602(2/2)
RY700
RELAY
DRIVER
R-CH
Q700
-32V REG
-32V
Q250
RELAY
SWITCH
RECT
D801,802
IC1902
RELAY
DRIVER
+10V
3 1
Q809
REG RY802,803
IC260 +15V
RECT
+7V D865
1 3
REG
-7V
3 2
REG
IC265 -15V
RECT
D851-854
IC1031
+5V
3 1
REG
F1
F2
-32V
RY911
RELAY
DRIVER
Q911
D927
+B SWITCH
RECT
Q912,913
D921-924
Q921
D925
J2501
PHONES
L
FRONT B
R
L
FRONT A
R
SPEAKERS
IMPEDANCE
USE 8-16Ω
L
SURROUND
R
TM601
• Signal path
: TUNER (FM/AM)
CENTER
• R-ch is omitted due to
same as L-ch.
L
SURROUND
BACK
R
T901
POWER
TRANSFORMER
D290
D291
R861
R862
R851
F901
D251
T902
POWER
F902
TRANSFORMER
J911
AC
OUTLET
D926
~
AC IN