22
LC-20S4E
TROUBLE SHOOTING TABLE
(Continued)
No
No
No
No
Yes
Yes
Yes
No
No
Yes
Yes
No
Yes
No
No S-Video output
No Picture (1/3)
No picture at all.
No Video 2 output
Check the power
line.
No TV output
Is output of
transistor Q801,
Q802 and Q803
normal?
Is input/output of
IC1201 normal?
Check LCD panel
voltages and
waveform.
Check IC501 and
its peripheral
parts.
No
Is input/output of
IC2201 normal?
Check IC2201
and its peripheral
parts.
Check IC1201
and its peripheral
parts.
Yes
No
Is input/output of
IC2202 normal?
Check IC2202
and its peripheral
parts.
Is voltage of pins
(7) and (9) of
tuner normal?
Is output of pin
(11) of tuner
normal?
Is input/output of
SF201 normal?
Is output of
IC801 normal?
Yes
Check IC501 and
its peripheral
parts.
Check IC801 and
its peripheral
parts.
Check SF201 and
its peripheral
parts.
Check tuner and
its peripheral
parts.
Is video input of
pin (B21) of
IC501 normal?
Check the V1_V
line and its
peripheral parts.
Is input of pins
(C18) and (D18)
of IC501 normal?
Check the V1_SY,
V1_SC line and
their peripheral
parts.
Содержание Aquos LC-20S4E
Страница 29: ...31 6 5 4 3 2 1 A B C D E F G H LC 20S4E SCHEMATIC DIAGRAM Ë INVERTER Unit ...
Страница 30: ...33 32 LC 20S4E 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë SUB Unit 1 2 ...
Страница 31: ...35 34 LC 20S4E 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë SUB Unit 2 2 ...
Страница 32: ...37 36 LC 20S4E 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë MAIN Unit 1 4 ...
Страница 33: ...39 38 LC 20S4E 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë MAIN Unit 2 4 ...
Страница 34: ...41 40 LC 20S4E 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë MAIN Unit 3 4 ...
Страница 35: ...43 42 LC 20S4E 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë MAIN Unit 4 4 ...
Страница 36: ...44 6 5 4 3 2 1 A B C D E F G H LC 20S4E Ë OPERATION Unit ...
Страница 37: ...45 6 5 4 3 2 1 A B C D E F G H LC 20S4E Ë R C LED Unit ...
