Samsung PN22N Series Service Manual page 22

5 Troubleshooting
5-1-4 S_Correction Failure
Check S1 ~ S6 signal.
S1~S6 signals are right at each
frequency block?
Yes
Check and replace C451~ C457,
Q451~Q455, and Q456~Q460 .
5-1-5 H_Lin. Failure
ICS201 Pin 22 voltage varies with
different H_Lin. DAC values?
Yes
IC403 Pin 7 and 8 voltage varies
with different H_Lin. DAC values?
Yes
Check L403.
5-1-6 Invariable H_Size
ICS201 Pin 20 voltage varies with
different H_Size DAC values?
5-4
No
Check and replace ICS201.
No
Replace ICS201.
No
Check +12 V line.
Check some parts around IC403.
No
Check and replace ICS201.
PN22N*