Toshiba 27AF43 - Appendix; Troubleshooting

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
IC902 AN5829S
SOUND DECORDER IC
1 101112
13141516171819
2
2021222324
3456789
TU001 115-V-K015AR_B
1
10 11 12 13
14 15 16 17
18
19
2
20
21
3 4 5 6 7 8
9
L901
100uH 0305
:SINCE THESE PARTS MARKED BY
CAUTION
DESCRIBED IN PARTS LIST ONLY
CRITICAL FOR SAFETY,USE ONES
ARE
DANS LA NOMENCLATURE DES PIECES
N’UTILISER QUE CELLS DECRITES
DANGEREUSES AN POINT DE VUE SECURITE
:LES PIECES REPAREES PAR UN ETANT
ATTENTION
Q902
KTA1504S_Y_RTK
BUFFER
Q901
KTA1504S_Y_RTK
BUFFER
C903
4.750V KA
C910
0.3350V
KA
C914
3.350V
KA
C904
4.750V KA
C905
4.750V KA
C907
1050V YK
C001_1
1006.3V YK
C916
10010V YK
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
R907
220K
R906
39K
R901
220 1/4W
R902
56K 1/4W
R903
39K
R912
330
R006
100
R001
100K 1/2W
R002
100K 1/2W
R904
220 1/4W
R905
56K 1/4W
C912
0.022 B
C908
0.022 B
C911
0.047 B
C913 0.1 B C917 0.1 B
C915 0.1 B
C918 0.1 B
C005
0.1 F
C002
0.1 B
W812
W820
W819W830
W829
D001
MTZJ33B
C902
150V KA
C901
150V KA
C919
1050V YK
TUNER+5V
TUNER_VIDEO
P.CON+8V[B]
P.CON+5V
P.CON+B
GND
AFT
SCL
SDA
J_AUDIO_OUT_L
J_AUDIO_OUT_R
SW_AUDIO_L
SW_AUDIO_R
J_AUDIO_OUT_L
J_AUDIO_OUT_R
AUDIO_IN1/2[R]
AUDIO_IN1/2[L]
AUDIO_IN3[R]
AUDIO_IN3[L]
PCB010
TMC559
NC
NC
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
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 0 5.0 5.0 0 3.7 3.6 2.6 3.7
AGC
NC NC NC
MB MB VIDEO OUT IF OUT BT SIF OUT AUDIO OUT AFT SDA SCL
(ADRESS)
(X’TAL)
2.3
0
3.2
3.2
2.3
0
NC NC NCNCNC
TUNER/STEREO SCHEMATIC DIAGRAM
(MAIN PCB)
FROM/TO MICON
TO SOUND
FROM/TO AV
FROM/TO CHROMA
FROM POWER
TO MICON
NC
G-11
G-12