Sony STR-DB780 Service Manual

STR-DA1ES/DB780
4242
5-29. PRINTED WIRING BOARDS – AC/DC 1/DC 2/PR 1/SEC 1 Boards – • See page 20 for Circuit Boards Location.
DC 2 BOARD
-1
-2
INPEDANCE
SELECTOR
S901
4Ω 8Ω
EB
B
C
E
C
6
1
A
DIGITAL
BOARD
CNP6
1
6
1
4
3
1
E
DIGITAL BOARD
CNP5
7
1
W
MAIN BOARD
CN804
4
1
6
1
(CHASSIS)
1-684-325-
11
(11)
1
3
DC 1 BOARD
1
4
1
3
V
MAIN
BOARD
CN802
14
(DA1ES)
1-684-324-
11
(11)
AC BOARD
(CHASSIS)
1
EE
(DB780: AEP, UK)
(DB780: TW)
DA1ES/
DB780: SP, MY
12
(AC IN)
(CHASSIS)
1-684-323-
11
(11)
(DA1ES)
12
AC OUTLET
CNJ1
(DA1ES/DB780: SP, MY, TW)
SUB POWER
TRANSFORMER
A
B
C
D
E
F
G
H
1 2 3 4 5 6 7 8 9 10 11
15
4
SEC 1 BOARD
PR 1 BOARD
21
1
6
1
3
1-685-500-
11
(11)
1-685-501-
11
(11)
1
3
5
1
L001
MAIN POWER
TRANSFORMER
12
F905
F906
DA1ES/
DB780: TW
EXCEPT DA1ES/
DB780: TW
EXCEPT DA1ES/
DB780: TW
• Semiconductor
Location
Ref. No. Location
D51 D-7
D52 C-7
D53 C-7
D54 C-7
D55 B-7
D56 C-7
D57 B-7
D901 G-2
D902 E-2
D903 H-3
D904 H-3
D905 H-3
D906 G-3
D907 F-1
D908 G-3
D909 G-2
D912 F-2
D913 E-2
D914
Q51 D-7
Q54 D-7
Q902 G-2
Q903 E-2
(Page
30)
(Page 25)
(Page 30) (Page 25)

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)