Block Diagram - Video Section - Sony STR-DE685 Service Manual

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