Read Sharp LC-60UD20KN (serv.man4) Service Manual online
11
LC-60UD20
LC-70UD20
Operation Manual (Continued)
T
roubleshooting
Pr
oblem
Possible solution
•
No power
.
•
Is the AC cor
d disconnected?
•
Check if you pr
essed
a
on the TV
.
•
The TV cannot be
operated.
•
Exter
nal influences such as lightning, static electricity
, etc.,
may cause impr
oper operation. In this case, operate the TV
after first tur
ning of
f the power
, or unplugging the AC cor
d
and r
e-plugging it in after one or two minutes.
•
Remote contr
ol unit
does not operate.
•
Ar
e batteries inserted with polarity (
e
,
f
) aligned?
•
Ar
e batteries wor
n out? (Replace with new batteries.)
•
Ar
e you using it under str
ong or fluor
escent lighting?
•
Is a fluor
escent light illuminating to the r
emote contr
ol
sensor?
•
Pictur
e is cut of
f.
•
Is the image position corr
ect?
•
Ar
e scr
een mode adjustments (Wide mode) such as pictur
e
size made corr
ectly?
• Strange
colour
,
light colour
, or dark
colour
, or colour
misalignment.
•
Adjust the pictur
e tone.
•
Is the r
oom too bright? The pictur
e may look dark in a r
oom
that is too bright.
•
Check the “Colour system” setting
•
Power is suddenly
tur
ned of
f.
•
The TV’
s inter
nal temperatur
e has incr
eased. Remove any
objects blocking the vent or clean.
•
Is the “Sleep timer” set? Select “Of
f” fr
om the “Sleep timer”
menu
•
Is “No signal of
f” or “No operation of
f” activated?
•
No pictur
e.
•
Ar
e connections to exter
nal equipment corr
ect?
•
Is the input signal type selected corr
ectly after connection?
•
Is the corr
ect input sour
ce selected?
•
Is a non-compatible signal being input?
•
Is the pictur
e adjustment corr
ect?
•
Is the antenna connected pr
operly?
•
Refer to “Pictur
e / Audio test”
•
No sound.
•
Is the volume too low?
•
If you do not clearly hear the sound for the visually impair
ed,
go to “TV Menu” > “Setup” > “Audio” > “Audio description
setting” > “Mix level”, and select the upper level to tur
n up
the volume.
•
Make sur
e that headphones ar
e not connected.
•
Check if you pr
essed
e
on the r
emote contr
ol unit.
•
Is the pr
oper item selected in the “Audio select” menu
when connecting devices to the HDMI 3 terminal or the PC
terminal?
•
Refer to “Pictur
e / Audio test”
•
The TV sometimes
makes a cracking
sound.
•
This is not a malfunction. This happens when the cabinet
slightly expands and contracts accor
ding to changes in
temperatur
e. This does not af
fect the TV’
s performance.
•
Net TV start page
cannot be displayed.
•
Is the ETHERNET cable connected corr
ectly?
•
Check the settings of “Network setup”
• Some
Inter
net
functions used on a
PC ar
e not available
fr
om the TV
.
•
The TV has only limited functions compar
ed with r
egular PC
br
owsers
• Miracast
image/audio
cannot be output to
the TV
.
• Check
pairing.
Cautions r
egar
ding use in high and low temperatur
e envir
onments
•
When the TV is used in a low temperatur
e space (e.g., r
oom, of
fice), the pictur
e
may leave trails or appear slightly delayed. This is not a malfunction, and the TV will
recover when the temperatur
e r
etur
ns to normal.
•
Do not leave the TV in a hot or cold location. Also, do not leave the TV in a location
exposed to dir
ect sunlight or near a heater
, as this may cause the cabinet to deform
and the LCD panel to malfunction.
Storage temperatur
e:
f
20 °C to
e
60 °C.
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