Block Diagram - Power Section - Sony STR-DE495 Service Manual

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4-6. BLOCK DIAGRAM — POWER SECTION —
PRE DRIVER
IC701
IN 2
PRE
FL-CH
8
DRIVE
DRIVE
1
MUTE
FR-CH
R-CH
TUNER/
D
AUDIO
PRE DRIVER
SECTION
IC702
(Page 16)
IN 2
PRE
8
DRIVE
SL-CH
DRIVE
1 MUTE
SR-CH
R-CH
PRE DRIVER
IC501
IN+
PRE
C-CH
DRIVE
1
DRIVE
PROTECTOR
66
MUTE
D734
BUFFER
22
AC MUTE
Q747,748
D733
HEADPHONE
67
RELAY
PREOUT/FRONT
71
RELAY
REAR RELAY
69
70
CENTER RELAY
HP DETECT
25
SPK B RELAY
17
R1 RELAY
72
DE595
SYSTEM
CONTROL
IC1601 (4/4)
POWER RELAY
65
STOP
48
+VOUT2
12
-VOUT2
POWER AMP
11
Q701-704
CURRENT
DETECT
-BB +B
Q705,706
R-CH
+VOUT2
12
-VOUT2
11
POWER AMP
Q651-654
CURRENT
DETECT
-BB +B
Q655,656
R-CH
+VOUT
6
-VOUT
5
POWER AMP
Q501-504
CURRENT
DETECT
-BB +B
Q505,506
PROTECTOR
D721,722
Q722,723,725
D731
+B
HP-RY
-B
-BB
FRONT-RY
REAR-RY
Q691
CENTER-RY
Q692
IC601
HP DETECT
OVERLOAD
2
7
DETECT AMP
SPK B-RY
+3.3V
(STBY)
RELAY
DRIVER
OVERLOAD
Q790
RY791
DETECT
D740,Q740
RELAY
DRIVER
R-CH
R-CH
Q710
RY701
RELAY
DRIVER
Q851
RY601
RELAY
DRIVER
OVERLOAD
Q610
DETECT
D640,Q640
RY501
RELAY
R-CH
R-CH
DRIVER
Q510
OVERLOAD
DETECT
D540,Q540
RECT
D802
-30V REG
-30V
Q801
IC1905
IC1902
+3.3V
+10V
TU+3.3V
3
1
3
1
REG
REG
AEP,UK M0DEL
TU+10V
IC801
+V
+7V
3
1
+7V
REG
-7V
3
2
-7V
REG
IC1503
IC802
-V
+5V
+5V-2
3
1
REG
IC1903
+5V
+5V-1
3
1
REG
IC1901
+2.5V
5
BACK-UP
4
+3.3V
2
SWITCH
19
19
J791
PHONES
R-CH
TM602
L
FRONT (DE495)
(DE595)
FRONT A
R-CH
R
DE595
TM603
L
• Signal path
FRONT B
R-CH
RY851
• R-ch is omitted due to
R
same as L-ch.
TM601
SPEAKERS
IMPEDANCE
USE 8-16Ω
L
SURROUND
R-CH
R
CENTER
DE495
EXCEPT
DE595:CND MODEL
DE595:CND MODEL
DE595
RELAY
RY801
DRIVER
Q809
RY802
RY803
RECT
R810
D820-823
R812
RECT
R910
D902-905
F1
F2
-30V
D804
RY901
RELAY
DRIVER
Q901
RECT
D910-913
IC1904
+3.3V
3
1
REG
Q921
D914
STR-DE495/DE595
: TUNER (FM/AM)
T901
POWER
TRANSFORMER
E2 M0DEL
S901
VOLTAGE
SELECTOR
240V
220V
120V
-1
-2
EXCEPT
E2
M0DEL
EXCEPT
E2
MODEL
E2 M0DEL
T902
POWER
JW904
TRANSFORMER
EXCEPT
~
AC IN
E2
MODEL
D915

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