Read Sony STR-DE685 Service Manual online
STR-DE685
20
20
4-5. BLOCK DIAGRAM — VIDEO SECTION —
12
0X
XCOM
ZCOM
YCOM
INH
VIN2
VIN3
VIN1
VOUT2
VOUT3
VOUT1
13
1X
5
0Z
3
1Z
2
0Y
1
10
9
11
1Y
Y
P
B
B-Y
P
R
R-Y
Y
B
C
A
P
B
B-Y
P
R
R-Y
J301 (1/2)
J201 (1/2)
J253
J252
J252
14
11
75Ω
DRIVER
6dB AMP
4
9
75Ω
DRIVER
6dB AMP
15
6
3
5
1
13
75Ω
DRIVER
6dB AMP
10
6
14
2
13
J200 (1/2)
5
3
J298 (2/2)
9
4
VIDEO 2
IN
DVD/LD
IN
VIDEO
IN
VIDEO
IN
COMPONENT
VIDEO
-6
-5
-4
-9
-8
-7
Y
P
R
R-Y
P
B
B-Y
J301 (2/2)
MONITOR
OUT
COMPONENT
VIDEO
EXCEPT AEP,UK,AUS MODEL
-3
15
75Ω
DRIVER
6dB AMP
1
3
1
75Ω
DRIVER
6dB AMP
-3
J200 (2/2)
J201 (2/2)
-2
-1
-1
VIDEO 1
S-VIDEO
IN
-2
VIDEO 1
S-VIDEO
IN
-2
VIDEO 2
S-VIDEO
IN
-1
DVD/LD
VIDEO 2
DVD/LD
-2
VIDEO
IN
-1
-1
VIDEO 1
VIDEO 3
IN
13
5
3
4
6
14
2
15
75Ω
DRIVER
6dB AMP
1
75Ω
DRIVER
6dB AMP
VIDEO
OUT
VIDEO 1
-2
VIDEO
OUT
MONITOR
13
5
3
4
6
14
2
15
75Ω
DRIVER
6dB AMP
1
75Ω
DRIVER
6dB AMP
Y
C
G
G
J253
S-VIDEO
OUT
-1
VIDEO 1
Y
C
G
G
S-VIDEO
OUT
MONITOR
Y
C
G
G
Y
C
G
G
Y
C
G
G
+5V
REG
IC807
3
2
-5V
REG
IC804
+5V-3
-5V-3
+V
-V
J251
VIDEO SW1
VIDEO SW2
VIDEO SW3
VIDEO SW4
V-SW1
V-SW5
V-SW2
V-SW3
V-SW4
D251,252
OR
D203,204
OR
VEE
-5V-3
VCC
+5V-3
VEE
-5V-3
VCC
+5V-3
VEE
-5V-3
VCC
+5V-3
V1.OUT
M.OUT
V1.OUT
M.OUT
V1.OUT
M.OUT
VEE
-5V-3
V-SW4
V-SW3
VCC
+5V-3
V1
V2
DVD
DVD
V1
V1
V2
DVD
V3
NC
V2
DVD
DVD
V-SW3
V-SW4
V-SW2
V-SW4
V-SW3
V-SW1
V-SW1
V-SW5
V-SW3
V-SW4
V-SW1
V-SW5
SW3
SW4
SW1
SW5
SW3
SW4
SW1
SW5
SW2
SW3
SW4
SW1
SW5
S-VIDEO
V SWITCH
IC251
VIDEO
SELECTOR
IC103
S-VIDEO
C SWITCH
IC252
VIDEO AMP
IC302
COMPONENT VIDEO SELECTOR
IC301
Q301
INV.
7
KEY/DISPLAY
SECTION
5
• Signal path
: VIDEO
• Abbreviation
AUS: Australian model
(Page 19)
Ver 1.1
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