XOCECO LC-27W18S, Руководство по обслуживанию

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( 3) No picture but with sound( only backlight lights up)
Normal Abnormal
Normal Abnormal
Yes No
NOTE: Because the power supply for 37” LG LVDS is 12V check N715 for 37” and check N705 for other models
(4), No sound but with picture
No Yes
Yes No
No sound but with picture
Check if the sound processing board X804 has output
Speaker fails to work
Check if correspondent pins of power
amplifier have output
Sound only with raster
Check if the power supply of
LVDS is normal or not
Check the signal outputted from
N101 to X189 is normal or not
The receiving board of
LVDS fails to work
properly
Check the power supply and
the periphery circuit of N101
Check pin 5 of N705 or pin 2 and
4 of N715 is low level or not
Check the periphery circuit of N705 or
periphery circuit of N715
Check pin 76 of N301 and the
inverter circuit, which it crosses