Sony STR-DB780 Service Manual

STR-DA1ES/DB780
2727
5-14. SCHEMATIC DIAGRAM – VIDEO Board – • See page 45 for IC Block Diagrams.
D
303
D
3
04
C363
R
32
5
R
3
57
Q302
R338 C346
C347
R344
C348
C336
C343
C342
R340 C344
C337
C349
R346
R302
R301
R309
R306
R304
R310
R307
C352
C353
C351
CN302
C309
C308
C313
C312
C311
C310
R342
C335
JW305
C377
C382 C381
C380C379
IC308
IC301
IC303
C358
C345
R341
R303
R305
R339
C301
EB301
C354
J303
J302
J301
J304
J305
JW311
JW312
JW313
JW314
CN303
CN301
C373
C374
1S
S1
33
T
1S
S
13
3T
10
50V
10
k
100
BA1A4M
75 10 50V
10 50V
75
10 50V
47p
47p
47p
75 47p
47p
10 50V
75
75
75
75
75
75
75
75
2200p
2200p
2200p
2P
10 50V
10 50V
10 50V
10 50V
10 50V
10 50V
75
47p
0.1
0.1 0.1
0.10.1
NJM-2595D
NJM2581D
TC74HC4053AF
0.1
47p
75
75
75
75
2200p
0.1
1P
9P
3P
3P
11P
11P
0.1
0.1
SW1
SW2
SW3
SW4
SW3 SW4
SW3 SW4
SW
1
S
W
2
Q1
Q2
Q3
Q4
Q
1
Q
2
Q
3
Q
4
RR1
RR2
RR3
RR4
RR5
RR6
RR7
RR8
RR9
R
R
1
R
R
2
R
R
3
RR
4
R
R
5
R
R
6
RR
7
R
R
8
R
R
9
V
IN
1
VIN
2
VIN
3
V
IN
1
V
IN
2
V
IN
3
Q5
Q6
Q
5
Q6
SW1
SW2
SW3
SW4
+5V
CTL A1 GND
-5V
+5V
SW1
SW2
SW3
SW4
GND
GND
VIDEO3
-5V
GND
(BACK UP)+5.6V
VC
C
1
V
O
U
T1
VC
C
2
VC
C3
VO
U
T2
V
O
U
T3
VIN
1
VIN
2
VIN
3
V
EE1
V
EE2
V
EE3
P
.SA
V
E
G
N
D
(CHASSIS)
(CHASSIS)
(CHASSIS)
(CHASSIS)
(CHASSIS)
(CHASSIS)
SELECTOR
VIDEO
VIDEO AMP
SELECTOR
VIDEO
INVERTER
V GND
V GND
V SW1
V SW2
V SW3
V SW4
CTRL A1
CONTROL
A1
MONITOR
OUT VIDEO
TV/SAT
IN VIDEO
IN VIDEO
DVD/LD
OUT VIDEO
IN VIDEO
VIDEO 2
OUT VIDEO
IN VIDEO
VIDEO 1
P
R /C R /R-Y
Y
Y
Y
MONITOR OUT
TV/SAT IN
DVD/LD IN
COMPONENT
VIDEO
(DB780:AEP,UK)
(EXCEPT DB780:AEP,UK)
NC
NC
GND
(EXCEPT DB780:AEP,UK)
P B /C B /B-Y
P R /C R /R-Y
P B /C B /B-Y
P R /C R /R-Y
P B /C B /B-Y
(Page 29)
(Page 22)
(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)