Haier 21F8A - Page 22

20
Use the remote controller an
d
enter S-MODE and adjus
t
RAGC to near 2D
RASTER OK
,
NO PICTURE
,
NO SOUND
Whether there are noise dots?
Check RAGC item of IC bus is
set
“
00
”
.
Whether there are voltages i
n
every pin of tuner
Check picture IF channel
and V231
,
V212
,
N201
Aerial system or tune
r
breaks down.
Check the circuit between
CPU and tuner.
NO YES
YES
N
O
YES
NO
N
O red
Check if V622 is rosin joint or break?
Replace V622 or joint.
Check the voltage of pin 1 at XS602
Check V621, R621
Check the circuit between pin 18 at N201 an
d
p
in 3 at XS261
YES
NO
YES
N
O
5.
6.
Maintenance Service and Trouble shooting