Zenith DVD5201 Service Manual page 27

D.
CHECK A
Fig.5. RF
waveform
Check RF Eye-Pattern.
RF : 1.5-1.6V(IC2A1 Pin 57)
YES
See the eye-pattern vivid?
YE S
END
VR166 - 923-03461
ELECTRICAL
NO
Check IC2A1 Pins 5, 6, 7, 8.
Does the
NO
sawtooth waveform emit
at IC2A1 Pin 41?
YE S
Replace IC201.
¥ Both are normal : IC201 is defective
No signal: Pick-up is defective
NO
Does the 1.6V emit?
Check IC201 Pin84.
No signal at IC201 : IC201 is defective
27
NO
Replace IC2A1.
YES
DVD2 - SERVICING