Read Sharp LC-20B6E (serv.man9) Service Manual online
27
LC-20B6E
No picture
(1/3)
No picture at all
No TV output
No VIDEO2 output
Check all the settings microprocessor's adjust process menu.
Is in/output of
Check IC801
Is voltages at
Check their
Is input at pin
Check V2_V line
IC801 normal?
No
and its
pins (3),(7) and (9
)
No
power lines.
(8) of IC3401
No
and its
Y
es
per
ip
h
era
l parts.
o
f tuner norma
l?
norma
l?
per
ip
h
era
l parts.
Ye
s
Is in/output of
Check IC1201
Is output at pin
Check tuner
IC1201 normal?
No
and its
(11) of tuner
No
and its
Y
es
per
ip
h
era
l parts.
norma
l?
per
ip
h
era
l parts.
Y
es
Check LCD
Is input at pin
Check its line.
pane
l vo
ltages
(4
7
) o
f
IC3401
N
o
an
d
wave
form.
norma
l?
Ye
s
Is output at pin
Check IC3401
(40) of IC3401
No
and its
normal?
peripheral parts.
Ye
s
Is output at pin
Check its line.
(216)
o
f
IC801
N
o
norma
l?
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