S-Video And Bridge 2 Assys - Pioneer VSX-LX50 Service Manual

1

10.11 S-VIDEO and BRIDGE 2 ASSYS

S-VIDEO ASSY (VSX-LX50 : AWX8845)
I
A
Y
C
0.1/16
DVD/LD IN
CN1204
(1/3)
*
Y
C1202
C
0.1/16
TV/SAT IN
CN1204
(2/3)
B
*
Y
C
DVR/VCR1 IN
CN1205
(1/2)
*
Y
C
DVR/VCR2 IN
CN1206
(2/2)
C
*
C1291
STBY IC2201, IC2202
(common with composite video)
51C
GCS
L
(CHASSIS)
L
L
L
H
H
H
H
AWX8845 ONLY
CN1302
RKN1048
(NC) 7
6
GNDU
D
V+5U 5
4
(NC)
3
BUSY(CTS)
2
RXD(TD)
1
TXD(RD)
AKP1213
CN1301
GND
5
(NC)
9
(DTR)
4
(NC)
8
TXD(RD)
3
BUSY(CTS)
7
RXD(TD)
2
R1309
(DSR)
6
0
(CD)
1
E
GNDCH
NOTES
1.RESISTORS
Unit: k-k Ω , M-M Ω or Ω unless otherwise noted.
Rated power: 1/16W unless otherwise noted.
Tolerance: ± 5%(J) unless otherwise noted.
2.CAPACITORS
No marked Capacitors are CEAT or CKSRYB.
Unit: p-pF or μ F unless otherwise noted.
Rated Voltage: shown as
"Capacity( μ F)/Voltage(V)",
or 50V unless otherwise noted.
3.DIODES
No marked Diodes are 1SS355.
* Parts or parts block marked by "STBY" are standby.
The mark found on some component parts indicates
F
the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts
of identical designation.
I
122
1
2
(VSX-91TXH, VSX-9120TXH : AWX8844)
(SY)
DVDIN_Y
C1201
DVDIN_C
(SC)
SELECTOR
TVIN_Y TC74HC4051AFT
TVIN_C
DVR1IN_Y
C1203
DVR1IN_C
0.1/16
DVR2IN_Y
C1204
SELECTOR
DVR2IN_C
TC74HC4051AFT
0.1/16
51B 51A OUT
MUTE
L L
DVR/VCR1
L H
DVR/VCR2
H L
DVD
H H
L L
TV
L H VIDEO
AWX8844 ONLY
MUTE
H L
MUTE
H H
C1303
RS232C
C1304
STBY
C1305
0.1
IC1301
0.1
1
C1+ VCC
2
V+10V GND
3
C1-
4
C2+
5
C2-
6
V-10V
100
R1303 7
TXD
R1304 8
RXD
100
SP3232ECY
C1309
0.01
2SC4081(QRS)
D1302 R1307
10k
GNDU GNDU
2
3
51A
V+5S
51B
51C
V+5S
C1241 R1257
2
0
0.1/16
3
Y MAIN IC1206 (1/2)
NJM12904V
STBY
IC1204
LA7213
V-5S
(Y) C1217 R1215
51A 3.3/50 330
51B
51C
V+5S
S53ABC
IC1203
S53ABC OUT
THRU
H
L
DVC
C MAIN
(Y)
V-5S
(SC)
(C) (C)
S-SIGNAL
V+5_6U
L1302
STBY
L1301
D1301
QTL1013
16
15
14
13 R1301
100
12
11
10
R1302
9
100
Q1301
V+5_6U
13 11 9 7 5 3 1
12 10 8 6 4 2
GAV
C 3/3
CN108
VSX-LX50
3
V+5S
Q1201
RT1N241M C
8
-
R1248 D1205
B
1
1SS355
47
+
4
E
C1220
DVC Direct Pass
GNDCH
STBY
GAV
V+5S
SYNC V-SYNC
SEP SEP
GND VCC
1 2 3 4 5
R1217
D1202
4.7k
(SY)
(Y)
V+5S
THRU/DVC
SELECT
(SC)
(C)
V-5S
(SY)
(SC)
V+5S V+5S
C1237 C1239
0.01 0.01
R1245 R1246
STBY STBY
C1245
C1246
33p
33p
CH CH
CH
CH
12p
12p
C1243 C1244
C1238 C1240
0.01 0.01
V-5S
V+12T
GNDVC
C 3/3
CN109
4
4
(SY)
(SC)
(SY)
(SC)
V-5S