LC-15S2U-S
46
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 IC3302/
IC3303/IC3304
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 IC3302,
IC3303, IC3304
and their
per
ipher
al par
ts
.
Yes
No
Are input and
output of
IC3301 as
specified?
Chec
k IC3301
and its
per
ipher
al par
ts
.
Chec
k the line
in question,
IC3305 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, J4021,
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,
IC3301 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 IC3301
as specified?
Yes
Chec
k IC3301,
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 LC-13S2US
Page 47: ...LC 15S2U S 47 6 5 4 3 2 1 A B C D E F G H CHASSIS LAYOUT MAIN Unit R C LED Unit SUB Unit ...
Page 48: ...LC 15S2U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 48 BLOCK DIAGRAM ...
Page 49: ...LC 15S2U S 49 17 16 19 18 15 14 13 12 11 10 ...
Page 50: ...LC 15S2U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 50 OVERALL WIRING DIAGRAM ...
Page 51: ...LC 15S2U S 51 17 16 19 18 15 14 13 12 11 10 ...
Page 53: ...LC 15S2U S 53 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM Ë R C LED Unit ...
Page 54: ...LC 15S2U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 54 ËMAIN Unit 1 5 ...
Page 55: ...LC 15S2U S 55 17 16 19 18 15 14 13 12 11 10 ...
Page 56: ...LC 15S2U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 56 ËMAIN Unit 2 5 ...
Page 57: ...LC 15S2U S 57 17 16 19 18 15 14 13 12 11 10 ...
Page 58: ...LC 15S2U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 58 ËMAIN Unit 3 5 ...
Page 59: ...LC 15S2U S 59 17 16 19 18 15 14 13 12 11 10 ...
Page 60: ...LC 15S2U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 60 ËMAIN Unit 4 5 ...
Page 61: ...LC 15S2U S 61 17 16 19 18 15 14 13 12 11 10 ...
Page 62: ...LC 15S2U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 62 ËMAIN Unit 5 5 ...
Page 63: ...LC 15S2U S 63 17 16 19 18 15 14 13 12 11 10 ...
Page 64: ...LC 15S2U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 64 ËSUB Unit 1 5 ...
Page 65: ...LC 15S2U S 65 17 16 19 18 15 14 13 12 11 10 ...
Page 66: ...LC 15S2U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 66 ËSUB Unit 2 5 ...
Page 67: ...LC 15S2U S 67 17 16 19 18 15 14 13 12 11 10 ...
Page 68: ...LC 15S2U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 68 ËSUB Unit 3 5 ...
Page 69: ...LC 15S2U S 69 17 16 19 18 15 14 13 12 11 10 ...
Page 70: ...LC 15S2U S 70 6 5 4 3 2 1 A B C D E F G H ËSUB Unit 4 5 ...
Page 71: ...LC 15S2U S 71 6 5 4 3 2 1 A B C D E F G H ËSUB Unit 5 5 ...
Page 72: ...LC 15S2U S 72 6 5 4 3 2 1 A B C D E F G H PRINTED WIRING BOARD ASSEMBLIES MAIN Unit Side A ...
Page 74: ...LC 15S2U S 74 6 5 4 3 2 1 A B C D E F G H MAIN Unit Side B ...
Page 76: ...LC 15S2U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 76 ...
Page 77: ...LC 15S2U S 77 17 16 19 18 15 14 13 12 11 10 SUB Unit Side A ...