Toshiba 20AF42 User Manual

ABC D E F GH
ABC D E F GH
2
1
3
4
5
6
7
8
2
1
3
4
5
6
7
8
S801YS801X
OUTOUTGININ
CF202_1
SAFGP45M7VFGZ00B
12345
Q203
2SA1037AK
TV BUFFER
C619 4706.3V YK
C612
2.250V KA
C630
0.2250V YK
C921 1050V YK C919 2.250V KA C918 4.750V KA
C624
100
10V
YK
C924
10010V YK
C917
4.750V KA
C925
0.3350V KA
C929
3.350V KA
C204
1050V YK
C209
0.4750V
YK
C625
4.750V NA
Q601
KRA102SRTK
PROTECT
L901
22uH
L203
1.5uH
L204
15uH
IC902 AN5829S
SOUND DECORDER IC
1 101112
13141516171819
2
2021222324
3456789
IC201 TB1253N
CHROMA IC
1 101112131415161718192 20 21 22 23 24 25 26 27 28
29
3
30313233343536373839
4
4041424344
4546474849
5
50515253545556
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CF201
EFCT4R5YS5A
CF203
TPSRA4M50C00-A0
CF204
MKT47.3MC110P-TF
X601
3.579545MHz
IS NON POLAR ONE.
THE ALUMI ELECTROLYTIC CAPACITOR MARKED NP
THE RESISTOR MARKED F IS FUSE RESISTOR.NOTE:
CD701B
CH243001
1
2
3
4
R.SIGNAL
TUNER VIDEO SIGNAL
LUMINANCE SIGNAL
COLOR SIGNAL
DEFLECTION SIGNAL
G.SIGNAL
B.SIGNAL
TUNER AUDIO SIGNAL
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
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.
NOTE:
R606
100 1/4W
R621
100 1/4W
R629
100 1/4W
R604
470
R605
10K
R607 2.2K
R603 3.3K
R747
75
R750
75
R214
270
R614
2.7K
R601 180K
R608
270
1/4W
R615 1.8K
R618 270K
R906
220K
R905
470
R904
470
R602
1K
R209
33K
R205
100
R204
220
R215
470
R201
1K
R202
1K
R212
3.3K
R211
2.2K
R619
33K
R610
2.7K
R612
2.7K
R220
82
R219
390
R223
270
R203
1.2K
R213
470
R210
68
R221
220
1/4W
R218
2.2K
R625
150K
R623
10K
R636
2.2K
R631
82 1/2W
R635
33K
R217
6.8K
R624
1.5M
R638
1K 1/4W
R640
4.7K
C645
0.1 F
C644
0.1 F
C617
1B
C638
180P CH
C609
0.022 B
C202
0.01 B
C629
0.0022 B
C646
0.1 F
C623
0.01 B
C633
0.01 B
C626
0.012 B
C927
0.022 B
C922
0.022 B
C932 0.1 B C930 0.1 B
C926
0.047 B
C928 0.1 B C931 0.1 B
C614
0.47 B
C222
0.01 B
C212
0.01 B
C206
0.1 B
C218
0.01 B
C208
0.01 B
C618 0.01 B
C215
33P CH
C210
0.0022 B
C201
0.01 B
C601
0.1 B
C634 0.22 B
C607 0.01 B
C627
8P CH
C637
3P CJ
C602
0.1 B
C606
0.1 B
C605
0.1 B
C220
0.0022 B
C227
330P CH
C221
0.01 B
C229 100P CH
C636
0.1
B
C641
0.001 B
W871 W870 W869
W839
W833
W838
W840
W843 W842
W804
W844
W820
D623
MTZJ12B
D622
MTZJ6.2B
D621
MTZJ6.2B
D620 MTZJ6.2B
D619 MTZJ6.2B
D618 MTZJ6.2B
D201
MTZJ12B
D617
MTZJ6.2B
D604 MTZJ6.2B
D603 MTZJ6.2B D602 MTZJ6.2B
D606 MTZJ5.6B
C216 1050V YK
C615
10016V
YK
C640
100016V YK
C616
4716V YK
C608
150V YK
C214
1050V YK
C211
0.2250V YK
C213
10016V
YK
C203
10010V YK
C604
150V YK
C935
4.750V YK
D605
11E1-EIC
D611
1SS133
D613
1SS133
D614
1SS133
D608
1SS133
D612
1SS133
D615
1SS133
Q202
2SC2412K
TV BUFFER
Q201
2SC2412K
AUDIO
BUFFER
Q204
2SC2814
PRE AMP
Q604
2SC2412K
V.BLK
Q603
2SC2412K
PROTECT
L603
47uH 0305
L604
47uH 0305
L601
47uH
L205
47uH
L602
100uH
L201
100uH
0305
C_V_OUT_SW
Y_V_OUT_SW
TUNER_VIDEO
SYNC_OUT
TUNER_AUDIO_L
SDA
TUNER_AUDIO_R
SCL
OSD_B
OSD_G
OSD_R
OSD_BLK
PROTECT
FSC_OUT
GND
P.CON+9V
P.CON+5V
AT+5V
V.OUT2
H.OUT
ABCL
AFT_OUT
B.OUT
AGC
G.OUT
IF
R.OUT
VM_OUT
AFC
V.OUT1
FROM/TO MICON/TUNER
FROM POWER
TO DIGITAL COMBI
FROM/TO AV
FROM/TO DEFLECTION
FROM/TO MICON/TUNER
PCB010
TMA532
5
00
NC
NC NC
NC NC
NC
NC
1513 14
CVBS OUT
BLACK DET FILTER
DIG GND
V OUT
V RAMP
H VCC(9V)
H AFC FILTER
H OUT
SYNC OUT
X-RAY
FBP IN/GP OUT
B OUT YC GND SVM OUT YS/YM IN EXT R IN EXT G IN EXT B IN RGB VCC(9V) SCL SDA EHT IN IK IN ABCL IN
DIG VDD
EW OUT
0 9.0
9.0 9.0
7
910
11
9.0
2.7 1.5 6.0 4.9
4.8 0 2.2 0.1 2.2 2.2 2.2 1.1 6.0
7.1 4.0 2.1 0 6.0 3.4 2.0
(MAIN PCB)
CHROMA / IF SCHEMATIC DIAGRAM
5.0 5.0
2.3
Noise
Det
Spectral
RMS Det
SAP
Filter
Noise
Filter
Spectral
Filter
SAP
Det
Stereo
Filter
GND
Input
VCA
Pilot
Det
St.PLL
Cancel
Pilot
Spectral
Expand
dbx De-Emph
SAP
Demod
Wide Band
RMS Det
Wide Band
Filter
L+R Filter L+R Demod
IIC Decoder
L-R DemodL-R Filter
fH.2fH Trap Filter
ZAP
OUT SW
AGC
Matrix
Offset
Cancel
Offset
Cancel
Wide Band
Expand
DAC
(L-R)/SAP
Switch
De-Emph
75us
SAPout
Filter
0 2.3 2.3 2.2 2.2 0.4
Vcc
5.1 2.4 2.4 0.4 2.3 3.4
2.3 2.3 2.3 2.3
NC
0 5.0 5.0 0 3.7 3.6 2.6 3.7
5
8
FROM/TO AV
NC
NC
IF GND
IF DET OUT
LOOP FILTER
IF VCC(9V)
V REF
DE-EMPH
DC NF FILTER EXT AUDIO IN
Y CLAMP FILTER APL DET FILTER
CVBS EXT IN
U IN V IN C IN
SIF/H CORR IN IF VCC(5V) VCO ADJ FILTER AUDIO OUT AFT OUT X’TAL(3.58MHz) IF AGC RF AGC APC FILTER IF IN IF IN CW OUT YC VCC(5V) R OUT G OUT
CVBS LNT IN
0 9.0
5.0 5.0
6
12
3.1
3.7
3.5
4.1
9.0
4.1 2.4 2.4 3.7 2.8 3.6 2.4 2.5 1.9 2.4 2.5 2.5 2.5
3.0 0 0 0 0.1 2.7 3.2 2.1 2.0 2.9 1.6 4.8 4.8
0.6
1.3
6.2
0
2.4
3.1
0
2.0
3.6
0
0
4.8

Toshiba 20AF42 Specifications

General

Brand	Toshiba
Model	20AF42
Category	TV
Language	English