5-2-3 Degaussing failure
Check degauss
Connector(CN102)
YES
Check output voltage at pin 12 of IC502
NO
Replace IC502
(Normal : 0V, Degaussing: 5V)
Does DC voltage right?
YES
Check and replace
Q101,D101,RL101,R101
5-2-3 Purity failure
Degaussing
YES
Purity is O.K
Done
NO
Degaussing circuit
NO
Refer to 5-2-2
is right?
YES
Replace CRT and
verify purity