Zenith DVD5201 Service Manual page 26

C.
DISC IN
OPEN/CLOSE
FOCUS ON?
YES
Does the disc turn?
YES
IC201 Pin169 is "High"?
YES
Is OK the track jump.
YES
Does the screen appear?
YES
END
VR166 - 923-03461
ELECTRICAL
NO
YES
YES
Replace IC501 or IC201.
NO Check IC2M1 Pin 21, PMD03
Pin 5 turn when the IC2M1
Pin 21 is less than 2.2V.
NO
Check A
N O
NO
Video Part is defective.
Check "Micro Circuit"
Check "7.OSD/ Video Circuit."
Fig.3. FOCUS ERROR waveform
NO
Check IC2A1 Pin 11,12,13,14
in DVD Mode
IC201 no output : Pick-up is defective.
NO
Replace IC201.
Check IC201 and IC2M1 when PMD03 Pin 5 is abnormal
Does the signal
pulse appear at IC2A1 Pins
39, 29?
YES
Replace PANTER A part.
26
NO
IC2A1 is defective.
DVD2 - SERVICING