Sony STR-DB780 Service Manual

STR-DA1ES/DB780
3737
5-24. SCHEMATIC DIAGRAM – H.P/PRE/SPOUT 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.
R496 R446
C446C496
R447
R699
R649
R599
R549
R499
R449
C449
C499
C549
C599
C649
C497
CN448
TM449
RY448
D450
C445C495
CN449
RY449
R698
R648
R748
R598
R548
R498
R448
RY699
J449
RY549
J699
D449
J849
CN849
EB849
R497
10 10
4700p4700p
10
100k
100k
100k
100k
100k
100k
22
50V
22
50V
22
50V
22
50V
22
50V
100p
4P
1S133T
1k
1k
1k
1k
1k
1k
1k
4P
1S133T
5P
10
∗∗
∗
∗
SL
SW
SR
R
L
C
RY+
PRE,RY-
FSP,RY-
RY GND
(CHASSIS)
R
GND
L
GND
LR
IMPEDANCE
FRONT
SPEAKERS
(DB780)
-1
-2
∗
100p
470p
C445,495
∗
(DB780)
CN449
10P
4P
(DA1ES)
-1
-2
-1
-2
∗
(DB780)
(DA1ES)
J699
2P
1P
L
R
FRONT
L
R
SURROUND
CENTER
PRE OUT
SUB WOOFER
(DA1ES)
GND
HP-CONT
CONT-GND
R
L
(CHASSIS)
PHONES
-1
-2
(DA1ES/DB780:AEP,UK)
(DB780:SP,MY,TW,KR,CH)
USE 4-16Ω
(Page 33)
(Page 32)
(Page 32)

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)