29
LC-20E1U
LC-20E1UB/UW
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/
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
FSMUTE line
.
Chec
k IC3301,
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
Yes
No
Is pin (55) of
IC2001 at
“L
”?
Chec
k the
headphone and
its per
ipher
al
par
ts
.
Chec
k Q2007,
J3500, 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
.
Summary of Contents for Aquos LC 20E1U
Page 32: ...35 34 LC 20E1U LC 20E1UB UW 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H OVERALL WIRING DIAGRAM ...
Page 35: ...39 38 LC 20E1U LC 20E1UB UW 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë DIGITAL Unit 1 5 ...
Page 36: ...41 40 LC 20E1U LC 20E1UB UW 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë DIGITAL Unit 2 5 ...
Page 37: ...43 42 LC 20E1U LC 20E1UB UW 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë DIGITAL Unit 3 5 ...
Page 38: ...45 44 LC 20E1U LC 20E1UB UW 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë DIGITAL Unit 4 5 ...
Page 39: ...47 46 LC 20E1U LC 20E1UB UW 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë DIGITAL Unit 5 5 ...
Page 40: ...49 48 LC 20E1U LC 20E1UB UW 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë ANALOG Unit 1 2 ...
Page 41: ...51 50 LC 20E1U LC 20E1UB UW 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë ANALOG Unit 2 2 ...
Page 42: ...52 6 5 4 3 2 1 A B C D E F G H LC 20E1U LC 20E1UB UW Ë INVERTER A Unit ...
Page 43: ...53 6 5 4 3 2 1 A B C D E F G H LC 20E1U LC 20E1UB UW Ë INVERTER B Unit ...
Page 46: ...56 6 5 4 3 2 1 A B C D E F G H LC 20E1U LC 20E1UB UW DIGITAL Unit Side B ...
Page 49: ...59 6 5 4 3 2 1 A B C D E F G H LC 20E1U LC 20E1UB UW ANALOG Unit Side A ...
Page 51: ...62 6 5 4 3 2 1 A B C D E F G H LC 20E1U LC 20E1UB UW INVERTER A Unit Side A ...
Page 53: ...64 6 5 4 3 2 1 A B C D E F G H LC 20E1U LC 20E1UB UW INVERTER B Unit Side A ...