Sony STR-DB780 Service Manual

STR-DA1ES/DB780
4141
5-28. SCHEMATIC DIAGRAM – KEY/MUTING/POWER Boards –
R1914 R1915 R1916 R1917 R1918 R1919
R1932 R1933 R1934 R1935 R1936 R1937
R1902 R1903 R1904 R1905 R1906 R1907 R1908 R1909
R1928R1927R1926R1925R1924R1923R1922
S1921 S1922 S1923 S1924 S1925 S1926 S1927 S1928
S1909S1908S1907S1906S1905S1904S1903S1902S1901
S1914 S1915 S1916 S1917 S1918
S1937S1936S1935S1934S1933S1932S1931
CN662
CN660
CN661
R1912 R1913
RV1901
S1704
S1702
RV1801
1k 2.2k 2.2k 4.7k 10k 22k
470 1k 1k 2.2k 2.2k 4.7k
470 1k 1k 2.2k 2.2k 4.7k 10k 22k
10k4.7k2.2k2.2k1k1k470
13P
11P
8P
470 1k
A/D(0)
A/D(1)
A/D(3)
A/D(2)
JOG(-)
JOG(+)
GND
+5V
SETUP/NAME
LEVEL/SURR
EQ
SELECT LED
GND
+5V
POWER SW.
SIRCS
SP SW.
A/D(3)
+3.3V(STBY)
A/D(3)
GND
+5V
MODE LED
A/D(1)
A/D(1)
FUNC(A)
FUNC(B)
GND
ROTARY
ENCODER
FUNCTION
ROTARY
ENCODER
(JOG DIAL)
ENTER LEVEL SURR
EQ
CUSTOMIZESET UP
EQUALIZER
MODE
FM MODE
MEMORY
PL
CINEMA
MODE -
MODE +
MULTI CH
DIRECT
FM/AM
+ -
TUNING
PRESET
2CH STAUTO DEC.
PTY SELECT
TUNING
DIMMER
STUDIO
EX A
DISPLAY
S1926 S1928
(DB780:AEP,UK)
(EXCEPT DB780:AEP,UK)
CINEMA
STUDIO
EX B
RDS PTY
SLEEP
(EXCEPT DB780:AEP,UK)
(DB780:AEP,UK)
INPUT CINEMA
STUDIO
EX C
+ -
TUNING/
SPEAKERS ON/OFF
(Page 39)
(Page 39)
(Page 39)

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)