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?
IC201 Pin105 is "High"?
Is OK the track jump.
Does the signal
pulse appear at IC2A1 Pins
29?
Does the screen appear?
OPEN/CLOSE
Replace IC501 or IC201.
Replace IC201.
Check IC2A1 Pin 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 5 is abnormal
Check IC2M1 Pin 21, PMD03
Pin 5 turn when the IC2M1
Pin 21 is less than 2.2V.
Check A
Video Part is defective.
Check "PANTERA Circuit."
Check "7.OSD/Video Circuit."
Replace PANTERA part.
IC2A1 is defective.
DISC IN
C.
END
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
Summary of Contents for SD-3805
Page 62: ...3 31 3 32 7 A V CIRCUIT DIAGRAM SD 3805 2805 K615 02 03 19 R14137B ...
Page 66: ...3 39 3 40 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATIONGUIDE BOTTOM SIDE TOP SIDE ...
Page 68: ...MEMO MEMO ...
Page 74: ...MEMO ...
Page 76: ...M E M O M E M O ...
Page 83: ...TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN ...