Advertisement
D.
CHECK A
Fig.5. RF
waveform
Check RF Eye-Pattern.
RF : 1.5-1.6V(IC2A1 Pin 57)
YES
Is the eye-pattern vivid?
YES
-
Check IC207 Pin 165.
-
Check the clock at the IC207 Pin 138.
END
NO
Check IC2A1 Pins 5, 6, 7, 8.
Does the
NO
sawtooth waveform emit
at IC2A1 Pin 41?
YES
Replace IC207.
-
Both are normal : IC207 is defective
No signal: Pick-up is defective
NO
Does the 1.6V emit?
YES
Check IC207 Pin84.
No signal at IC207 : IC207 is defective
3-25
NO
Replace IC2A1.
Advertisement
