42
LC-13B4U-S
LC-13B4U-B
TROUBLE SHOOTING TABLE
(Continued)
No sound
fr
om
speaker
s
Yes
No
Is pin (53) of
IC2001 at
“L
”?
Chec
k all the settings on the microprocessor
’s adjust process men
u.
No sound
No
Are outputs at
pins (1) and (7)
of IC3301/
IC3302/IC3303
as specified?
Yes
No
Are inputs at
pins (2) and (4)
as w
ell as
outputs at pins
(8) and (12), all
of IC3305, as
specified?
Muting eff
ect is
on.
Chec
k the
SP MUTE line
.
Chec
k IC3301,
IC3302, IC3303
and their
per
ipher
al par
ts
.
Yes
No
Are input and
output of
IC3304 as
specified?
Chec
k IC3304
and its
per
ipher
al par
ts
.
Chec
k the line
in question,
IC3301 and its
per
ipher
al
par
ts
.
Yes
Chec
k the
speak
ers and
their per
ipher
al
par
ts
.
No sound
fr
om
headphone
Chec
k, J3303,
har
ness and
their per
ipher
al
par
ts
.
No sound
fr
om output
line
Yes
No
Is pin (58) of
IC2001 at
“L
”?
No
Are outputs at
pins (14) and
(15) of IC3501
as specified?
Yes
Chec
k the line
in question.
Chec
k the
LMUTE line
.
Chec
k IC3501,
IC3304 and
their per
ipher
al
par
ts
.
TV sound
failure
Yes
No
Is output at Pins
(15) and (16) of
tuner as
specified?
No
Is input at pin
(67) of IC3304
as specified?
Yes
Chec
k IC3304,
X3301 and
their per
ipher
al
par
ts
.
Chec
k the
tuner and its
per
ipher
al
par
ts
.
Chec
k Q3201,
Q3202 and
their per
ipher
al
par
ts
.
Содержание LC-13B4UB Operation
Страница 46: ...8 7 10 9 6 5 4 3 2 1 A B C D E F G H 46 LC 13B4U S LC 13B4U B OVERALL WIRING DIAGRAM ...
Страница 47: ...17 16 19 18 15 14 13 12 11 10 47 LC 13B4U S LC 13B4U B ...
Страница 49: ...49 6 5 4 3 2 1 A B C D E F G H LC 13B4U S LC 13B4U B SCHEMATIC DIAGRAM Ë R C LED and OPERATION Unit ...
Страница 50: ...8 7 10 9 6 5 4 3 2 1 A B C D E F G H 50 LC 13B4U S LC 13B4U B Ë MAIN Unit 1 5 ...
Страница 51: ...17 16 19 18 15 14 13 12 11 10 51 LC 13B4U S LC 13B4U B ...
Страница 52: ...8 7 10 9 6 5 4 3 2 1 A B C D E F G H 52 LC 13B4U S LC 13B4U B Ë MAIN Unit 2 5 ...
Страница 53: ...17 16 19 18 15 14 13 12 11 10 53 LC 13B4U S LC 13B4U B ...
Страница 54: ...8 7 10 9 6 5 4 3 2 1 A B C D E F G H 54 LC 13B4U S LC 13B4U B Ë MAIN Unit 3 5 ...
Страница 55: ...17 16 19 18 15 14 13 12 11 10 55 LC 13B4U S LC 13B4U B ...
Страница 56: ...8 7 10 9 6 5 4 3 2 1 A B C D E F G H 56 LC 13B4U S LC 13B4U B Ë MAIN Unit 4 5 ...
Страница 57: ...17 16 19 18 15 14 13 12 11 10 57 LC 13B4U S LC 13B4U B ...
Страница 58: ...8 7 10 9 6 5 4 3 2 1 A B C D E F G H 58 LC 13B4U S LC 13B4U B Ë MAIN Unit 5 5 ...
Страница 59: ...17 16 19 18 15 14 13 12 11 10 59 LC 13B4U S LC 13B4U B ...
Страница 60: ...8 7 10 9 6 5 4 3 2 1 A B C D E F G H 60 LC 13B4U S LC 13B4U B Ë TUNER Unit 1 5 ...
Страница 61: ...17 16 19 18 15 14 13 12 11 10 61 LC 13B4U S LC 13B4U B ...
Страница 62: ...8 7 10 9 6 5 4 3 2 1 A B C D E F G H 62 LC 13B4U S LC 13B4U B Ë TUNER Unit 2 5 ...
Страница 63: ...17 16 19 18 15 14 13 12 11 10 63 LC 13B4U S LC 13B4U B ...
Страница 64: ...8 7 10 9 6 5 4 3 2 1 A B C D E F G H 64 LC 13B4U S LC 13B4U B Ë TUNER Unit 3 5 ...
Страница 65: ...17 16 19 18 15 14 13 12 11 10 65 LC 13B4U S LC 13B4U B ...
Страница 66: ...8 7 10 9 6 5 4 3 2 1 A B C D E F G H 66 LC 13B4U S LC 13B4U B Ë TUNER Unit 4 5 ...
Страница 67: ...17 16 19 18 15 14 13 12 11 10 67 LC 13B4U S LC 13B4U B ...
Страница 68: ...8 7 10 9 6 5 4 3 2 1 A B C D E F G H 68 LC 13B4U S LC 13B4U B Ë TUNER Unit 5 5 ...
Страница 69: ...17 16 19 18 15 14 13 12 11 10 69 LC 13B4U S LC 13B4U B ...
Страница 70: ...70 6 5 4 3 2 1 A B C D E F G H LC 13B4U S LC 13B4U B Ë INVERTER Unit ...
Страница 71: ...71 6 5 4 3 2 1 A B C D E F G H LC 13B4U S LC 13B4U B PRINTED WIRING BOARD ASSEMBLIES TUNER Unit Side A ...
Страница 74: ...74 6 5 4 3 2 1 A B C D E F G H LC 13B4U S LC 13B4U B MAIN Unit Side A ...
Страница 76: ...76 6 5 4 3 2 1 A B C D E F G H LC 13B4U S LC 13B4U B MAIN Unit Side B ...
Страница 78: ...78 6 5 4 3 2 1 A B C D E F G H LC 13B4U S LC 13B4U B INVERTER Unit Side A ...