Sony STR-DB780 Service Manual

STR-DA1ES/DB780
4343
5-30. SCHEMATIC DIAGRAM – AC/DC 1/DC 2/PR 1/SEC 1 Boards –
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
Les composants identifiés par une marque 0 sont
critiques pour la sécurité. Ne les remplacer que
par une pièce portant le numéro spécifié.
JW910
D914
CN911
JW901
CN910
R902
C904 C906
JW907
C909
D913
D912
C912
C901 D901 C905
D909
R903
C907
C902
C903
C920
D903
D906
D905
D904 CN906
CN907
CN901
CN902
CN905
Q902
R56
R55
C51
D55
D56
D57
D54
Q54
D52
D53
R54
C52
R53
C53
C56
R1
CN2
JW2
JW1
CN1
JW3
D51
Q51
R52
R51
C917
JW903
JW902
JW904
JW905
C918
EB902
R911
R912
D908
S901
EB51
RY1
F2
F1
T2
EB1
C3
CN904
CN903
Q903
D902
R910
R909
D907
C908
C916
C915
F906
F905
JW51
CN51
CNJ1
CNP1
L001
R904
C55
CN909
CNP906A
CNP909
CNP907
CNP906B
F904 F903
RBV-602
3P
3P
22k
47
50V
47
50V
330
63V
11ES2
11ES2
47 16V
47
16V
MTZJ-
5.6B2
47
16V
11ES2
2.2k
4700
16
2200
35V
1000
35V
10000p
11ES2
11ES2
11ES2
11ES2 6P
6P
3P
7P
3P
2SB1241
10k
33k
2200
10V
11EQS04
11EQS04
11EQS04
11EQS04
2SC2785
1SS133
1SS133
47k
4700p
680
0.056
470p
3.3M
1/2W
2P
2P
1SS133T
2SC2785
10k
2.2k
1
1W
1
1W
RBV-402
4700p
250V
4P
6P
2SB1241
MTZJ-36B
2.2
2.2
RD6.2F-B2
1000
16V
12A
250V
12A
250V
4P
2P
10k
0.1
50V
5P
3P
5P
6P
3P
∗
∗
∗
∗
∗
∗
∗∗
H-A
H-B
L-A
L-B
O-B
O-A
GND GND
O-B
O-A
GND
GND
+24V
-24V
GND
+8V
-8V
GND
GND
AC 6V
AC 6V
+36V
+36V
+B
-B
B GND
RY GND
GND
24V(RY)
+24V
-24V
P.RY
GND
P.RY
FL GND
D.GND
8V
8V
STOP
STOP
GND
-5V
8V
(CHASSIS)
P.RY
GND
STOP
8V
(CHASSIS)
(CHASSIS)
3
1
2
4
3
1
2
4
∗
F903,904
4A 125V
-5V REGULATOR
-2
-1IMPEDANCE
SELECTOR
FL 1
FL 2
∗
0.033 250V
0.015 100V
AC POWER
DETECT
RELAY
DRIVE
∗
F1
10A 125V
∗
10A 125V
F2
TRANSFORMER
SUB POWER
(AC IN)
AC OUTLET
C917,918
(DA1ES/DB780:TW)
(EXCEPT DA1ES/DB780:TW)
∗
C915,916
12000 63V
10000 71V (DA1ES)
(DB780)
(DA1ES)
(EXCEPT DA1ES/DB780:TW)
(DB780:TW)0.1 100V
(DA1ES)
(DA1ES/DB780:TW)
(EXCEPT DA1ES/DB780:TW)
(DA1ES/DB780:TW)
(EXCEPT DA1ES/DB780:TW)
(DA1ES/DB780:TW)
(EXCEPT DA1ES/DB780:TW)
(DB780:AEP,UK)
(DB780:TW)
(DA1ES)
(DA1ES/DB780:SP,MY,TW)
(DA1ES/DB780:SP,MY)
(DA1ES)
(DB780:SP,MY)
MAIN POWER
TRANSFORMER
-30V REGULATOR
-30V
T2.5AL 250V
T2.5AL 250V
T4AL 250V
GND
+24V
-24V
GND
+8V
-8V
GND
GND
AC 6V
AC 6V
+36V
+36V
H-A
H-B
L-A
L-B
GND
8Ω
4Ω
(Page 32)
(Page 22)
(Page 32)
(Page 22)

Sony STR-DB780 Specifications

General

Type	Stereo Receiver
Total Harmonic Distortion	0.09 %
Digital inputs	2 Optical, 1 Coaxial
Weight	10.5 kg
Video inputs	composite
Video outputs	1 composite, 1 S-Video
Output Power	100 Watts (8 Ohms, 20 Hz - 20 kHz, 0.09% THD)
Signal-to-Noise Ratio	96 dB (Line in)
Input Sensitivity	150 mV (Line in)