Block Diagram - Power Section - Sony STR-DE485 Service Manual

4-6. BLOCK DIAGRAM — POWER SECTION —
IN 2
FL-CH 8
FR-CH R-CH
TUNER/
IN 2
SL-CH 8
4
AUDIO
SECTION
(Page 16)
SR-CH R-CH
IN+
C-CH 1
PROTECTOR
HEADPHONE
PREOUT/FRONT
REAR RELAY
CENTER RELAY
HP DETECT
SYSTEM
CONTROL
IC1601 (4/4)
POWER RELAY
• Signal path
: TUNER (FM/AM)
• R-ch is omitted due to
same as L-ch.
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PRE DRIVER
IC701
+VOUT2
12
PRE
DRIVE -VOUT2
DRIVE
11 POWER AMP
Q701-704
-BB +B
PRE DRIVER
IC702
+VOUT2
12
PRE
DRIVE -VOUT2
DRIVE
11 POWER AMP
Q651-654
-BB +B
PRE DRIVER
IC501
+VOUT
PRE 6
DRIVE -VOUT
DRIVE
5 POWER AMP
Q501-504
-BB +B
PROTECTOR
67
D721,722
Q722,723,725
D734
D733
D731
+B
HP-RY
68
RELAY
-B
-BB
FRONT-RY
72
RELAY
REAR-RY
70
CENTER-RY
71
IC601
HP DETECT
OVERLOAD
25
2
DETECT AMP
66
STOP 48
CURRENT OVERLOAD
DETECT DETECT
Q705,706 D740,Q740
R-CH R-CH
R-CH
CURRENT OVERLOAD
DETECT DETECT
Q655,656 D640,Q640
R-CH R-CH
R-CH
CURRENT OVERLOAD
DETECT DETECT
Q505,506 D540,Q540
-30V REG
-30V
Q801
IC1905
Q691
+3.3V
TU+3.3V 3 1
REG
Q692
AEP,UK M0DEL
TU+10V
7
+7V
-7V
IC1503
+5V
+5V-2 3 1
REG
+5V-1
IC1901
+2.5V 5
BACK-UP
4
SWITCH
+3.3V 2
+3.3V
(STBY)
19 19
R-CH
TM602
RELAY
DRIVER
R-CH
Q790
RY791
RELAY
DRIVER
TM601
Q710
RY701
RY601
RELAY
DRIVER
Q610
R-CH
RY501
RELAY
DRIVER
Q510
T901
POWER
RECT
TRANSFORMER
D802
IC1902
D898,899
DOUBLER
+10V
3 1
REG COMMUTATION
RECT
D820-822
IC801
+V
+7V
3 1
REG
-7V
3 2
REG
RECT
IC802 D902-905
-V
IC1903
JW905
+5V
3 1
REG
F1
EXCEPT
F2
E
M0DEL
-30V
F901
D804
RY901
RELAY
DRIVER
Q901
T902
POWER
RECT
D910-913 TRANSFORMER
IC1904
+3.3V
3 1
REG
Q921
D914 D915
STR-DE485/DE485E
J791
PHONES
L
FRONT
R
SPEAKERS
IMPEDANCE
USE 8-16Ω
L
SURROUND
R
CENTER
E M0DEL
-1
S901
VOLTAGE
SELECTOR
220V
-2
240V
-3
120V
~
AC IN