Haier HS-2190, Руководство по обслуживанию

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Raster without picture and sound
Normal
Snow noise on the screen ?
Inspect whether the item RAGC in
D-MODE is set to be 00
Inspect the voltage on the pins of the tuner
Using special remoter
controlor to enter S-MODE
or D-MODE ,setting
RAGC to be 20
Inspect
antenna or
replace the
tuner
Inspect the
circuit from
N201 to the
tuner
yes
no
Available
Abnormal
no
Inspect circuit of
PIF and
V231,V212
N201 etc.
Raster without picture and sound
Absent base color such as red
Inspect whether V622 is open or virtual welding
Normal
Replace or reweld
V622
Inspect the voltage on the pins of XS602
Inspect V621 R621
Abnormal
Normal
Abnormal
Inspect the circuit from
N201(pin18) to XS261(pin3)
Absent red color
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