24
LC-20S4E
TROUBLE SHOOTING TABLE
(Continued)
No
No
No
Yes
Yes
No
No
Yes
Yes
No
Yes
No Sound (1/2)
Check the L_MUTE line
and its peripheral parts.
Check IC501 and its
peripheral parts.
Check Q3901, Q3904,
Q3905 and their
peripheral parts.
Is output of D3901 "L"
state?
Is output of pins (C16)
and (D16) of IC501
normal?
Check IC3301 and its
peripheral parts.
No Sound from
headphone
Is output of pins (2) and
(12) of IC3301 normal ?
Check IC3301 and
its peripheral parts.
Check IC501, R_IN,
L_IN line and their
peripheral parts.
Muting effect is on.
Check the SP_Mute line
and its peripheral parts.
No sound from
front speaker.
Is input of pin (9) of
IC3301 "H" state?
Is pins (6) and (8) of
IC3301 normal?
Is output of pins (2), (4),
(10) and (12) of IC3301
normal?
Check front speaker
and connection cable.
No
Check the line and its
peripheral parts.
Is input of pins (2) and
(3) of J4000 normal ?
Yes
No Sound from
Audio Out terminal
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 ...