Toshiba 20AF46 Service Manual page 34

A B
8
7
C1502
47P CH
0
0.6
R1503
0
1K 1/4W
BUFFER
Q1501
2SA1037AK
6
5
W837
4
3
2
1
A B
G-13
C
COMB FILTER/AV SCHEMATIC DIAGRAM
(MAIN PCB)
C1505
0.01 B
C1514
10V 100
BUFFER
Q1502
KTC3875S_Y_RTK
R1508
C1511
3.5
2.0
1K
0.01 B
2.6
C1512
R1513 R1518
16V 100 YK
3.3K 6.8K
D.VCC D.VSS
0
5.2
C1515
KILLER CKin
0 2.3
0.01 B
TEST V.FIL
0 2.2 3.5 2.9
L1503
C1509 C1516
BUFFER
BIAS1 BIAS3
Q1505
10uH 0305
1.2 3.5 3.5
0.01 B 0.01 B
KTC3875S_Y_RTK
R1504 C1522
ADin C.OUT
2.5
100 100P CH
2.9
C1508 C1517 C1526_1
VRT BIAS2
2.9 1.5
0.1 B 0.01 B
56P CH
C1510 R1505 L1504
VRB Y.OUT
2.3
0.01 B 100 15uH 0305
BUFFER
3.5
Q1507
A.VSS A.VDD
KTC3875S_Y_RTK
0 5.1
3
COMB FILTER IC
3.5 2.2
IC1501
TC90A45FG
YUV_IN(REAR)
J704
MSP-213V1-652_NI_LF
28
29
S804X
LINE1(REAR)
J701
MSP-213V2-432_NI_LF
R733
R726
1K
1K
C733
16V 22 KA
S-JACK
J702
YKF51-5503N
C734
0.1 B
FRONT-VIDEO
J705
MTJ-032-03A-30FE
FRONT-AUDIO.L
J706
MTJ-032-03A-32FE
R745
LINE3_A_IN_L
1K
FRONT-AUDIO.R
J707
MTJ-032-03A-31FE
R746
LINE3_A_IN_R
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C
D E
VIDEO SW(Y) IC
IC1502 MM1501XNRE
C1503
R1509
4.5
Vin1 SW1
1K
50V 4.7 KA
R1510
0
GND V.OUT
220
4.5
YK
Vin2 Vcc
VIDEO SW(C) IC
IC1503 MM1501XNRE
C1501
R1507
4.5
Vin1 SW1
1K 1/4W 16V 10 KANP
0
GND V.OUT
4.5
Vin2 Vcc
R1516
120 1/4W
R1517
1K
C725
C722
1 F
1 F
C719
1 B
C720
1K 1 B
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
D E
F G
FROM/TO MICON
0
Y/C_SW
S_IN
4.4
7.9
FROM/TO CHROMA
0
Y_V_OUT_SW
4.4
C_V_OUT_SW
L1501
7.9
P.CON+8V[A]
100uH 0305
P.CON+5V
FSC_OUT
VIDEO_OUT
V_IN[YUV]
U_IN[YUV]
Y_IN[YUV]
VIDEO_IN1
VIDEO_IN3
FROM/TO POWER
GND
FROM/TO SOUND
GND
TO TUNER/STEREO
AUDIO_IN1/1[R]
AUDIO_IN1/1[L]
AUDIO_IN2[L]
AUDIO_IN2[R]
F G
H
8
7
6
5
4
3
2
PCB010
CME017
1
H
20AF46/20AF46C
G-14