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4
Disc motor (D.M.) does not rotate.
Does pin 117 of IC401
(TP409) PLCK oscillate around
10 MHz ?
Check peripheral
circuit of IC402.
Check peripheral circuits
of IC402.
Check disc motor and wiring.
N
Y
Focus servo is NG.
Are FE, RFSB,
FSON signals normal?
Check peripheral circuit of IC306.
Do signals output to
pins 9 to 14 of CN501?
Check IC502.
Check wiring for
pickup head.
Lens cleaning.
Replace pickup
mechanism.
Y
Y
N
N
5
FE signal
Pin 150 (TP405)
of IC401
RFSB signal
Pin 152 (TP503)
of IC401
0.3V
1.65V
0.3V
Focus search Focus servo on
Focus servo ON
signal waveform
Fig. 1-3-10
Fig. 1-3-11
Fig. 1-3-12
Summary of Contents for SD-520EKE
Page 4: ...SECTION 1 GENERAL DESCRIPTIONS 1 OPERATING INSTRUCTIONS SECTION 1 GENERAL DESCRIPTIONS ...
Page 69: ...Others Operating a TV with the Remote Control Before Calling Service Personnel Specifications ...
Page 113: ......
Page 116: ...4 2 Power Supply Block Diagram Fig 3 4 2 ...
Page 119: ...m Q502 Q501 PUDET2 IC306 Fig 3 4 6 4 4 Main Block Diagrams 4 4 1 Servo System Block Diagram ...
Page 122: ...4 5 2 Output RGB Block Diagram Fig 3 4 9 ...
Page 128: ...Fig 3 5 5 5 3 2 Main Circuit Diagram ...
Page 129: ...5 3 2 Main Circuit Diagram ...
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Page 136: ...Fig 3 5 5 ...
Page 137: ...Fig 3 5 6 5 4 Output Circuit Diagrams 5 4 1 Output Circuit Diagram ...
Page 138: ...5 4 Output Circuit Diagrams 5 4 1 Output Circuit Diagram ...
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Page 143: ...Fig 3 5 6 ...
Page 145: ...10 1 3 4 A B C D E G 2 5 6 7 8 9 F RGB 5 4 2 Output RGB Circuit Diagram Fig 3 5 8 ...
Page 146: ...10 1 3 4 A B C D E G 2 5 6 7 8 9 F 5 5 Motor System Circuit Diagram Fig 3 5 9 ...
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