Sony STR-DB780 Service Manual

1515
STR-DA1ES/DB780
5-3. BLOCK DIAGRAM – AUDIO CONTROL Section –
SUB WOOFER
MUTING
Q451
MUTING
Q601
MUTING
Q701
MUTING
Q501
F
(Page 14)
S MUTE
TRIM
LEVEL SHIFT
CIRCUIT
CENTER
MULTI CH IN
M
(Page 17)
DATA, CLK, LAT
L
(Page 17)
DATA, CLK, LAT
K
(Page 16)
PRE RY
G
(Page 16)
L OUT
LEVEL SHIFT
CIRCUIT
J
(Page 16)
SL OUT
J699
J449
L
R
FRONT
L
R
SURROUND
LEVEL SHIFT
CIRCUIT
H
(Page 16)
C OUT
R-CH
SR-CH
RY449
RY549
RY699RY807
RELAY
DRIVE
Q826
J111
AUDIO SELECTOR
IC111
27 6.1L
36 6.1SL
40 6.1C
36.1SB
32 6.1SW
37COUT
24
LOUT
29SWOUT
34
30 D/ASW
33SLOUT
22
DATA
21
CLK
23
LAT
38 D/AC
25 D/AL
20
VRIN
23
OUT
25
26
TRIM
13
CLK
17
LAT
16
DATA
CLK LAT DATA
20
VRIN
23
OUT
25
TRIM
26
TRIM
13
CLK
17
LAT
16
DATA
9
VRIN
6
OUT
4
TRIM
5
TRIM
CLK LAT DATA
13
CLK
17
LAT
16
DATA
CLK LAT DATA
20
VRIN
23
25
26
OUT
TRIM
TRIM
DATA CLK LAT
• SIGNAL PATH
• R-CH is omitted due to same as L-CH.
: TUNER
: AUDIO IN (ANALOG)
C
(Page 14)
2CHL
28 2CHL
FRONT
L
SURROUND
L
D/ASL
2(SW)
BUFFER
IC602 (2/2)
BUFFER
IC402
BUFFER
IC602 (1/2)
BUFFER
IC502
ELECTRICAL
VOLUME
IC401
ELECTRICAL
VOLUME
IC601
ELECTRICAL
VOLUME
IC501
PRE OUT
MUTING
CONTROL
SWITCH
Q813
LINE AMP
IC521
LINE AMP
IC621 (1/2)
LINE AMP
IC621 (2/2)
SUB WOOFER
CENTER
LINE AMP
IC421
E
(Page 14)
L, SL,
C, W
W
SL
C
L
(DA1ES)

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)