3-10
FOCUS ON?
Check
the focus error moving the
lens up and down.
(IC2A1 Pin 39)
Does the
TTL level change at IC201
Pin 121 and 152 moving
the lens?
Does the disc turn?
Is OK the track jump.
Does the signal
pulse appear at IC201
Pins 150, 151?
Does the screen appear?
OPEN/CLOSE
Replace µ-COM or IC201.
Replace IC201.
Check IC2A1 Pins 47,50,51,52
in DVD Mode
Fig.3. FOCUS ERROR waveform
IC201 no output : Pick-up is defective.
Check IC201 and IC2M1 when PMD03 Pin 6 is abnormal
Check IC2M1 Pin 21, PMD03
Pin 6 turn when the IC2M1
Pin 21 is less than 2.2V.
Video Part is defective.
Check "5.MPEG Circuit."
Check "7.OSD/Video Circuit."
Replace µ-COM part.
IC2A1 is defective.
DISC IN
C.
END
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
Summary of Contents for T512C
Page 31: ...3 23 3 24 4 MPEG CIRCUIT DIAGRAM Optical Coaxial out CVBS Y Pb Pr Componet Y C S VHS WAVEFORM...
Page 36: ...3 33 3 34 8 A V JACK CIRCUIT DIAGRAM S VIDEO C AUDIO L AUDIO R OPTICAL COMP VIDEO S VIDEO Y...
Page 39: ...PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATION GUIDE 3 39 3 40...
Page 40: ...3 41 3 42 2 POWER A V FRONT P C BOARD LOCATION GUIDE...
Page 41: ...3 43 3 44 3 KEY P C BOARD LOCATION GUIDE...
Page 48: ...MEMO MEMO...
Page 64: ...MEMO...
