LG DVD5353 Service Manual page 34

D.
CHECK A
Fig.5. RF
waveform
Check RF Eye-Pattern.
RF : 1.5-1.6V(TP2A0)
YES
Is the eye-pattern vivid?
YES
• Check IC201 Pin 165.
• Check the clock at the IC201 Pins 37, 59.
END
NO
Check IC2A1 Pin 3.
Does the
NO
sawtooth waveform emit
at IC2A1 Pin 36?
YES
Replace IC201.
• Both are normal : IC201 is defective
No signal: Pick-up is defective
NO
Does the 1.6V emit?
YES
Check IC201 Pin84.
No signal at IC201 : IC201 is defective
3-11
NO
Replace IC2A1.