Chroma / If Schematic Diagram - Toshiba 27A51 Service Manual

A B
8
FROM/TO AV
C.OUT
Y.OUT
TUNER_VIDEO 5
R214
FSC_OUT
270
TUNER_AUDIO_L
TUNER_AUDIO_R
1
7
FROM/TO AV
2 NC
CD701B
3
CH243001
4 NC
TV BUFFER
Q203
2SA1037AK L204
2.4
15uH R210
3.1
68
0
CF203
6
TPSRA4M50C00-A0
5
FROM/TO POWER
4
GND_POWER
P.CON+9V
P.CON+5V
FROM/TO MICON/TUNER
AFT_OUT
AGC
W844
3
IF
CF204
MKT47.3MC110P-TF
2
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
NOTE: THE DC VOLTAGE AT EACH PART WAS MEASURED
NOTE: THE RESISTOR MARKED F IS FUSE RESISTOR.
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
THE ALUMI ELECTROLYTIC CAPACITOR MARKED NP
1
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
IS NON POLAR ONE.
A B
C

CHROMA / IF SCHEMATIC DIAGRAM

C613
9.0 1 B
3.7
AUDIO
3.1 BUFFER
C213
Q201
2SC2412K
10V 100
YK
C212
R205
TV BUFFER
9.0 0.1 B
Q202
4.1 100
2SC2412K
6
3.5
0 4.1 2.4 9.0 2.4 3.7 2.8 3.6 2.4
56 55 54 53 52 51 50 49 48 47
1 2 3 4 5 6 7 8 9 10
3.0 5.0 0 0 0 0.1 2.7 3.2 2.1
NC
12
L202
1.2uH
R207
1.5K
W839
C220
0.1 B
C221
6.2 0.01 B
PRE AMP
1.3
Q204
KTC3881S-RTK
1 2 3 4 5
0.6
IN IN G OUT OUT
CF202
SAF45MFG220Z
C935
50V 4.7 KA
AUDIO_L
TP901
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C
D E
(MAIN PCB)
7
9
C615 R608
10V 100 270
YK 1/4W
8
NC
2.5 1.9 2.4 2.5 2.5 2.5 2.7 1.5 0 6.0 4.9 9.0 7.1 4.0
46 45 44 43 42 41 40 39 38 37 36 35 34 33
11 12 13 14 15 16 17 18 19 20 21 22 23 24
2.0 2.9 1.6 5.0 4.8 4.8 4.8 0 2.2 0.1 2.2 2.2 2.2 9.0
C602
0.1 B
13 14 15
NC NC
NC
2.3 2.3 2.3 2.3 0 5.0 5.0 0 3.7 3.6 2.6 3.7
24 23 22 21 20 19 18 17 16 15 14 13
GND
Det VCA Det
OUT SW DAC ZAP IIC Decoder St.PLL
AGC
Pilot Input SAP
Switch L-R Filter L-R Demod Cancel
Matrix
De-Emph Pilot
(L-R)/SAP Filter Filter Filter
75us
L+R Filter L+R Demod Stereo Noise SAP
Filter
Cancel
SAPout Demod
Filter Filter
Offset fH.2fH Trap Filter
SAP
Wide Band Spectral
Expand
Cancel
Wide Band
RMS Det Expand RMS Det Det
Offset
dbx De-Emph
Wide Band Spectral Spectral Noise
2.3
Vcc
1 2 3 4 5 6 7 8 9 10 11 12
0 2.3 2.3 2.2 2.2 0.4 5.1 2.4 2.4 0.4 2.3 3.4
NC NC
D E
F G
11
10
D601
1SS133
D607
1SS133
NC
2.1 0 6.0 3.4 2.0
32 31 30 29
25 26 27 28
5.0 5.0 1.1 9.0 6.0
R621 R624
120 1/2W 120 1/2W
3.6
R635
2.0
V.BLK
33K 1/4W
Q604
0
2SC2412K
0
R638
4.8
SPOT KILLER
1K
Q603
0
2SC2412K
TUNER AUDIO SIGNAL
TUNER VIDEO SIGNAL
LUMINANCE SIGNAL
COLOR SIGNAL
L901 DEFLECTION SIGNAL
R.SIGNAL
22uH
G.SIGNAL
B.SIGNAL
F G
H
8
FROM/TO MICON/TUNER
SYNC_OUT
SDA
SCL
7
H_TONE_H
OSD_BLK
SPOT_KILLER
6
FROM/TO VIDEO SWITCH
PIP_OSD_B
PIP_OSD_G
PIP_OSD_R
PIP_SW
5
FROM/TO POWER
AT+12V
4
FROM/TO DEFLECTION
V.OUT2
H.OUT
ABCL
B.OUT
G.OUT
3
R.OUT
AFC
V.OUT1
2
1
PCB010
TMA509
H