D801
D803
D801
D804
PWC1
F801
L801
R801
R416
RLY1
FROM
FBT 10V
C804
450V
150uF
T801
TMS-3541T4
B+
133V
45V
12V
D807
C814
D808
D813
C815
C812
R814
C820
C819
Q804
TO I501 #34
OCP
TUNER
33V
R820
DR.TRNS B+
45V
SOUND B+
12V
R817
R818
D812
5.6Vz
12V
133V
#42
Q805
C706
ST-BY
5V
133V
R802
2.7M
1/4W
R803
2.7M
1/4W
L802
#2
C805
2200P
1.6kV
Check
F801(250V 4A)
Check
D801(LT2A05G)
Check
R801(10W 3.2)
Check
Voltage
Check
Voltage
Check
Voltage
FROM MICOM #42
PW ON : H
PW OFF : L
Check
waveform
<DRAIN OF I801>
ST-BY
PW ON
Check
Voltage
#6
#5
Check
Voltage
INPUT
D805
IN4937G
C882
C883
4700P
4700P
OUT PUT
C831
0.1U(M)
R832
1/4 W
1K
R831
1K
1/4W
R811
1K
1/4 W
R805
200
1/4 W
DRAIN
R804
240K
1/4 W
C806
1200P
R810
1.6K
1/4W
100V(M)
R806
51
1/4 W
76
5
4
3
21
I1801
MA8920
R807
240
1/4 W
R809
7.5K
1/4 W
R808
68K
1/4 W
C807
1000P
100V(M)
C881
NC
I802
PC-817(LTV-817C)
I803
PP133
D831
8.2Vz
R833
1/4W
Q831
KTC945C-Y
3
2
GND
34
1.NO POWER
TROUBLESHOOTING GUIDE
APPENDIX
Summary of Contents for DTH-20D5FSN
Page 4: ...CIRCUIT BLOCK DIAGRAM 3...
Page 11: ...SCHEMATIC DIAGRAM 10...
Page 12: ...PRINTED CIRCUIT BOARD PCB MAIN 11...
Page 13: ...12 EXPLODED VIEW DTH 20D5FSN...
Page 14: ...13 EXPLODED VIEW DTH 21D4FSN...
Page 39: ...TROUBLESHOOTING GUIDE APPENDIX 5 NO COLOR 6 NO VERTICAL DEFLECTION 38...
Page 40: ...TROUBLESHOOTING GUIDE APPENDIX 39 7 NO ON SCREEN DISPLAY 8 REMOTE CONTROL DOES NOT OPERATE...