Read Sony STR-DG520 Service Manual online
STR-DG520
STR-DG520
20
20
5-6. BLOCK DIAGRAM – POWER Section –
6
2
3
3
DRIVE
POWER AMP
Q701-704
CURRENT
DETECT
Q711,712
RY350
PRE DRIVER
IC701
IN 1
+VOUT1
-VOUT1
R
L
L
AUDIO
OUT
SUB
WOOFER
CENTER
SURROUND
R
R-CH
R-CH
L-CH
R-CH
SL-CH
C-CH
R-CH
SR-CH
R-CH
TUNER/
AUDIO
SECTION
C
RY901
D920
F1
F2
F2
-20V
+3.3V
(STBY)
+7V
(VCC)
+5V
-7V
+7V
TU+9V
-20V
RECT
D950-953
D990
D991
D1001
D1108
D1107
OVERLOAD
DETECT
D720,Q720
8
61
12
11
11
DRIVE
POWER AMP
Q651-654
CURRENT
DETECT
Q661,662
-20V REG
Q930
B-SWITCH
Q500,501
RELAY
DRIVER
Q901
AC IN
DETECT
Q990
PRE DRIVER
IC601
IN 2
+VOUT2
-VOUT2
OVERLOAD
DETECT
D670,Q670
6
2
3
3
DRIVE
POWER AMP
Q801-804
CURRENT
DETECT
Q811,812
PRE DRIVER
IC801
IN 1
+VOUT1
-VOUT1
OVERLOAD
DETECT
D820,Q820
RY355
RY301
70
PROTECTOR
D320,325-327
Q320,321,325
D320,325-327
Q320,321,325
58
48
D1111
+9V
(STBY)
OVERLOAD
DETECT AMP
7
2
IC565
–55V
-B
+A5V
+5V
REG
1
3
IC1001
+5.8V
+5.8V
REG
1
2
IC4100
+3.3V
REG
1
3
IC1904
+9V
REG
1
3
IC1902
-15V
+15V
+7V
REG
1
3
IC350
-7V
REG
2
3
IC352
+5V
REG
1
3
IC1031
+B
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
RECT
D921
RECT
D910-913
RECT
D4001
RECT
D940-943
T901
POWER
TRANSFORMER
(MAIN)
TB604
TB601
TB607
J405
FRONT
RY375
PHONES
J790
R-CH
RELAY
DRIVER
Q375
FRONT
R
Y
HP
R
Y
C/SUR R
Y
SW_PREOUT_R
Y
HP
DET
FRONT_A_RY
PROTECTOR
HP_DETECT
FUSE_DETECT
STOP
63
55
HP_RY 62
POWER_RY
69
PRE_OUT_SW_RY
66
C/SW/REAR/SB_RY
FRONT RY
HP DETECT
HP RY
SW_PREOUT_RY
C/SUR RY
SYSTEM
CONTROL
IC1101 (6/6)
PRE
DRIVE
PRE
DRIVE
SW-CH
-55V +B
-55V +B
-55V +B
PRE
DRIVE
R910
F4001
F901
F4002
R911
R940
T902
POWER
TRANSFORMER
(SUB)
SPEAKERS
IMPEDANCE
USE 8-16Ω
RELAY
DRIVER
Q355
RELAY
DRIVER
Q301
RELAY
DRIVER
Q350
AC IN
~
• Signal path
: TUNER (FM/AM)
• R-ch is omitted due to
: TUNER (FM/AM)
• R-ch is omitted due to
same as L-ch.
(Page 15)
Click on the first or last page to see other STR-DG520 service manuals if exist.