Toshiba 27a43 Service Manual page 22

A B
8
FROM/TO AV
VIDEO_IN2
V_IN[YUV]
VIDEO_IN1
U_IN[YUV]
Y_IN[YUV]
VIDEO_IN3
VIDEO_OUT
7
FROM/TO COMB FILTER
C_V_OUT_SW
P.CON+5V
Y_V_OUT_SW
VIDEO_OUT 7
6 P.CON+8V[A]
FSC_OUT
GND
D611
SB290S
FROM/TO TUNER/STEREO
TUNER_VIDEO
TUNER+5V
5
P.CON+8V[B]
P.CON+5V
TO SOUND
6dB AMP
Q603
KTC3875S_Y_RTK
P.CON+8V[B]
4
FROM POWER
UNREG+12V
FROM/TO DEFLECTION
3
P.CON+5V
P.CON+8V[A]
GND
V_OUT
EW_OUT
H_SYNC
ABCL
2
R.SIGNAL
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
G.SIGNAL
1
B.SIGNAL
A B
G-3
C
CHROMA SCHEMATIC DIAGRAM
R603
330 1/2W
2.7 0 2.3
48 47
P.CON 5V REG
C641
2.2
Q606
C IN(Y/C)
KTC3209_Y
R602 R649 0.1 B
5.0
7.2 0
NC(GND)
12 3W 12 3W
C642
2.3
5.0 5.5
Y IN(Y/C)
7.2
50V 1 KA
P.CON 5V REG
2.8
Q602
VREG VCC
5.5
KTC3209_Y
P.CON 5V
1.9
REG
CVBS4
5.0 7.2
Q604
R656 R610
5.5 KTC3209_Y
5.6
5.7V VREG OUT
100
1K 1/4W
C640
2.9
fsc OUT
0.01 F
0
NC
NC
0
FAST YUV
0
NC DELAYDE Y OUT
6dB AMP
3.9
Q605
EW OUT
KTC3875S_Y_RTK
7.4
8.0 8.0 C608
2.4
2.7
7.4 VIDEO LINE OUT
2.2
6dBAMP
16V 47 YK
1.6
Q614 8.6
2.7
2.1 8.7 VREG OUT
KTA1504S_Y_RTK
3.9
R613 VRAMP AGC CAP
390 3.0
V OUT
8
3.0
VRAMP CAP
1 2
R601
P.CON 8V REG 2.9 3.5
Q611
15 1/2W
KTC3209_Y
P.CON 8V REG
11.3 7.9
Q601
8.5
KTC3209_Y
7.9
11.3
8.5
R609
100
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
C
D E
(MAIN PCB)
D610
SB290S
R616
8.8
120 1/2W
5.5
R617
100
12
0 1.1 0 1.9 5.0 1.1 0 1.9 5.6 2.8 0 3.1 0
46 45 44 43 42 41 40 39 38 37 36 35 34 33
2.3
Y SW OUT
0
NC
NC
4.9
MCU RESET
MCU CLOCK OUT
NC
4.9
47 NC(GND) 33 V/C GND P_CON CONT
48 Y IN(YUV) 34 XTAL 3.58
4.8
SCL
4.8
SDA
CHROMA 12C BUS NTSC 1 CHIP CTV IC
0
IC601
CLK CONT NC
M61283FP
0
FAST BLK
2.8
R IN
1 HVCO F/B 15 G OUT
2.8
G IN
2 AFC FILTER 16 B OUT
2.9
B IN
4.6
V PULSE OUT
0
INV.FBP OUT
11
0
MONITOR OUT
2.4
ACL
3 4 5 6 7 8 9 10 11 12 13 14 15 16
0 0 0 0 0 8.0 8.0 8.0 0 8.0 8.0 2.9 2.9 3.1
NC NC
R654
15
56K 9
13 14
R635
120K
R636
S801X
1.5K
10
ATTENTION
:LES PIECES REPAREES PAR UN
DANGEREUSES AN POINT DE VUE SECURITE
N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
D E
F G
4.9
AT+5V REG
Q607
KTC3203_Y
R627
100
R628
100
C637 33P CH
C643 33P CH
C644 33P CH
W805
R629 D608
6.8K 11E1-EIC
R620
R623
100
R626
100 1/4W
100 1/4W
CAUTION
:SINCE THESE PARTS MARKED BY
ETANT
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
F G
H
8
7
FROM/TO MICON
PROTECT
SW_Y_OUT
6
AT+5V
RESET
POWER
SCL
SDA
5
OSD_BLK
OSD_R
OSD_G
OSD_B
VD
HD
SYNC_OUT
4
CLAMP_OFF
TO CRT PCB
CP802A
3
B2013H02-7P
P.CON+8V 1
GND(SIGNAL) 2
R.OUT 3
G.OUT 4
B.OUT 5
CLAMP_OFF 6
NC VM COIL 7
2
PCB010
TMC559
ARE
1
H
G-4