17
LC-15B2U
TROUBLE SHOOTING TABLE
(Continued)
No picture
at all
Yes
No
Are inputs
and outputs
of IC801 as
specified?
Chec
k all the settings on the microprocessor’
s adjust process men
u.
No picture
Chec
k IC801
and its
per
ipher
al
par
ts
.
Yes
No
Are inputs
and outputs
of IC1201 as
specified?
Chec
k
IC1201 and
its per
ipher
al
par
ts
.
Chec
k LCD
panel v
oltage
and
wav
e
fo
rm
.
No TV
and
VIDEO 1
output
Yes
No
Are inputs
and outputs
of IC402 as
specified?
Chec
k IC402
and its
per
ipher
al
par
ts
.
No
Is input at Pin
(73) of IC801
as specified?
Chec
k IC802,
A
V1 line and
their
per
ipher
al
par
ts
.
No TV
output
Yes
No
Are v
oltages
at Pins (6),
(7) and (9) of
tuner as
specified?
Chec
k the
po
w
er line
.
Yes
No
Is output at
Pin (19) of
tuner as
specified?
Chec
k the
tuner and its
per
ipher
al
par
ts
.
No
Is input at Pin
(1) of IC402
as specified?
Chec
k the
line in
question.
Yes
Chec
k IC402
and its
per
ipher
al
par
ts
.
Yes
No
Are Pins (2)
and (4) of
IC402 at
“H”
and “L
”
respectiv
ely?
Are Pins (65)
and (66) of
IC2001 at
“H”
and “L
”
respectiv
ely?
No VIDEO
1 or 2
output
Yes
No
Is input at Pin
(1) of IC402
as specified?
Chec
k the
line in
question.
Yes
No
Are Pins (2)
and (4) of
IC402 both at
“L
” or Pins (4)
of IC402 at
“H”?
No S
VIDEO
output
No
Are inputs at
Pins (71) and
(72) of IC801
as specified?
Chec
k
SC5001, SY
line
, SC line
and
per
ipher
al
par
ts
.
No
COMPONENT
output
No
Is input at
Pins (4), (5),
(6) and (75)
of IC801 as
specified?
Chec
k J3404,
J3405, J3406,
D
VD-Y line
,
PB line
, PR
line and
per
ipher
al
par
ts
.
Are Pins (65)
and (66) of
IC2001 both
at “L
”or
Pins
(66) of IC1201
at “H”?
Chec
k IC402
and its
per
ipher
al
par
ts
.
Yes
Chec
k the
line in
question.
Yes
Chec
k the
line in
question.
Summary of Contents for LC-15B2U
Page 24: ...27 26 LC 15B2U 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 ...
Page 25: ...29 28 LC 15B2U 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 ...
Page 26: ...31 30 LC 15B2U 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 ...
Page 27: ...33 32 LC 15B2U 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 ...
Page 28: ...35 34 LC 15B2U 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë TERMINAL Unit 1 2 ...
Page 29: ...37 36 LC 15B2U 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë TERMINAL Unit 2 2 ...
Page 30: ...38 6 5 4 3 2 1 A B C D E F G H LC 15B2U Ë JACK Unit ...
Page 32: ...40 6 5 4 3 2 1 A B C D E F G H LC 15B2U Main Unit Side A ...
Page 33: ...41 6 5 4 3 2 1 A B C D E F G H LC 15B2U Main Unit Side B ...
Page 34: ...42 6 5 4 3 2 1 A B C D E F G H LC 15B2U Terminal Unit Component Side ...
