- 3-6 -
C.
FOCUS ON?
Check
the focus error moving the
lens up and down.
(IC2A1 Pin 42)
Does the
TTLlevel change at IC201
Pin 78 and 132 moving
the lens?
Does the disc turn?
IC201 Pin169 is "High"?
Is OK the track jump.
Does the signal
pulse appear at IC2A1 Pins
39, 29?
Does the screen appear?
OPEN/CLOSE
Replace -COM or IC201.
Replace IC201.
Check IC2A1 Pin 1
1,12,13,14
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.
Check A
Video Part is defective.
Check "5.MPEG Circuit."
Check "7.OSD/Video Circuit."
Replace -COM part.
IC2A1 is defective.
DISC IN
END
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
Summary of Contents for DA-3520
Page 19: ... 2 11 CS4228 CS49300 CS8415A ...
Page 20: ... 2 12 µPD16311 NJM2279 NJU7312A ...
Page 23: ...2 15 2 16 BLOCK DIAGRAM ...
Page 25: ...2 19 2 20 µ COM FRONT SCHEMATIC DIAGRAM ...
Page 26: ...2 21 2 22 DAP Digital Amplifier Part SCHEMATIC DIAGRAM ...
Page 27: ...2 23 2 24 DSP DIGITAL AUDIO PROCESSING SCHEMATIC DIAGRAM ...
Page 28: ...2 25 2 26 PRINTED CIRCUIT DIAGRAMS MAIN P C BOARD SOLDER SIDE ...
Page 29: ...2 27 2 28 MAIN P C BOARD COMPONENT SIDE ...
Page 30: ...2 29 2 30 MAIN FRONT P C BOARD SOLDER SIDE MAIN FRONT P C BOARD COMPONENT SIDE ...
Page 42: ...3 11 3 12 SCHEMATIC DIAGRAMS DRIVE RF SCHEMATIC DIAGRAM ...
Page 43: ...3 14 3 13 DVD DSP DIGITAL SIGNAL PROCESSING SCHEMATIC DIAGRAM ...
Page 44: ...3 15 3 16 µ COM SCHEMATIC DIAGRAM ...
Page 45: ...3 17 3 18 MPEG SCHEMATIC DIAGRAM ...
Page 47: ...3 21 3 22 PRINTED CIRCUIT DIAGRAM DVD P C BOARD SOLDER SIDE ...