Toshiba MD20FP1C Service Manual page 45

A B
8
FROM/TO REGULATOR1
DVD_Y
7 DVD_C
P.CON+5V
GND
L4203
P.CON+9V
100uH 0305
AT5.7VREG
8.5VREG
R4220
75
FROM/TO IN/OUT
C4213
REAR_VIDEO
6 FRONT_VIDEO 50V 2.2 KA
VIDEO_OUT
AV2
AV1
W827
SCL
FROM/TO DEFLECTION
W832
SDA
V.OUT
ACL
AFC
5
H.OUT
R630
OSD_Y
1K 1/4W
OSD_B
OSD_G
OSD_R
W823
HD
FROM POWER
UNREG+12V
4
GND
FROM/TO MICON/TUNER
TUNER_VIDEO
AV1
AV2
TV/DVD
3
CPU_RESET
HD
POWER_ON_H
VIDEO_OUT2
0 SW
R634
6.0 Q602
PROTECT
KTC3875S_Y_RTK
4.7K
0
OSD_Y
OSD_B
OSD_G
OSD_R
SDA
2 SCL
SYNC_VIDEO
H_CONTROL
1 NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
A B
G-13
C
VIF/SIF/CHROMA SCHEMATIC DIAGRAM
R4222
75
0 3.9 9.0 4.6
8 7 6 5
1 2 3 4
4.7 4.8 4.6 4.8
NC NC NC NC NC
0 0 0 5.2 0 5.2 2.5 2.5 4.5 3.9 2.5 3.4
48 47 46 45 44 43 42 41 40 39 38 37
CHROMA IC
0
IC601
NC
LA76319M-MPB-E
5.2
REG
SW
5.2 CLMP
VXD APC1 FSC
0
NC VIDEO
CLMP
SW TINT
5.0
AUDIO
SW
AF
5.2
BPF YC SN ACC CEMO
SW
3.4
BUS
CL BS
V/Y RGB COLOP
TRAP
SW SHARP SG MATRIX CLAMP
3.4
DC REST CONTRAST SYNC
3.4
ATT BRIGHT
LPF SEP
0
NC VER
OSD OSD
SEP
CONTRAST SW
5.0
VER
5.0 C/D
ORIVE/OUT-OFF
NC
VER
0.1
RAMP
NC CLMP
ABL/ACL
2.6
NC REG-SW
2.8
NC RST 5V/8V-REG
0.2
NC
1 2 3 4 5 6 7 8 9 10 11 12
0 0 0 5.0 6.0 8.6 2.6 3.3 2.8 3.4 8.6 2.6
NC NC NC NC
R608
5.6K
R605
27K
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.
C
D E
(AV PCB)
R625
28
12K
R622
390
C628
50V 0.47 KA
5.0 3.0 3.5 2.6
36 35 34 33
3.2
0
C622
W818
2.5
50V 1 KA
2.5
C601
0
HOR
0.01 B
VCO
0
X-RAY
R619
1/256
1.7
4.7K +-1%
HOR R618
5.9
C/D
220 1/4W
FBP 0.4
NC
AFC1
C618
R616
1.0
AFC2 0.0056 B
100 1/4W
C619
R615
2.7
PHASE
50V 1 KA 8.2K
SHIFTER R613
5.2
HOR HOR 100
VCC OUT 2.4
2.9
3.0
0
13 14 15 16
7.9 3.7 3.5 3.5
L601
100uH 0305
D603
1N4005-EIC
C634
50V 1 KA
CAUTION: DIGITAL TRANSISTOR
D E
F G
C1506 C1511
L1503
27P CH 0.47 B
820uH
C1518
6.3V 470 YK
C1519
0.01 B
0 2.4 3.0 2.6 2.6 0 0 5.5
1 2 3 4 5 6 7 8
BUFFER
Q1503
KTC3875S_Y_RTK
16 15 14 13 12 11 10 9
5.4 3.8 1.4 4.2 3.6 2.2 2.5 0
C1504
0.01 B C1516
L1501 16V 470 YK
C1517
15uH
0.01 B
0305
R1509
4.4 2.1
5.0
BUFFER
BUFFER 560
C1502
Q1501
1.7
Q1502
2.4
KTC3875S_Y_RTK
KTC3875S_Y_RTK
0.1 B
L1502
R1508
1.1
C1520
15uH 0305 1.2K
0.1 B
34
AFC
33
H.OUT
P.CON+9V
SW
1/2W
Q601
KTC3875S_Y_RTK
0
5.0 H_CONTROL
4.4
5.0
P.CON+5V
4.4 L4205
9.0
SW
100uH
Q605
0305
DTA114EKA
32
V.OUT
P.CON+5V_B
P.CON+9V
8.5VREG
ACL
27
UNREG+12V
AT5.7VREG
CPU_RESET
29 30
PLAYBACK LUMINANCE SIGNAL
PLAYBACK COLOR SIGNAL
B.SIGNAL
G.SIGNAL
R.SIGNAL
F G
H
8
7
C1521
50V 3.3
KA
6
FSC
R1514
100 1/4W
5
NC
1.3 4.8 1.3 0.3
1 2 3 4
4
8 7 6 5
0 1.3 5.0 0.3 NC
3
2
FROM/TO CRT
31
CP802A (CP802B)
B2013H02-6P
CLAMP 1
GND 2
G.OUT 3
R.OUT 4
PCB250
B.OUT 5
TMB561
CLAMP_OFF 6
TUNER VIDEO SIGNAL
1
PLAYBACK VIDEO SIGNAL
DEFLECTION SIGNAL
COLOR SIGNAL
H
G-14