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1-41
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 IC605.
Do signals output to
pins 4 to 9 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-2550A
Page 1: ...DVD VIDEO PLAYER SERVICE MANUAL Jun 2002 S FILE NO 810 200207 SD 2550A SD 2550H SD 2550T ...
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Page 67: ...DVD VIDEO PLAYER SERVICE MANUAL Jun 2002 S FILE NO 810 200207 SD 2550A SD 2550H SD 2550T ...
Page 88: ...5 3 2 Main Circuit Diagram Fig 3 5 6 3 29 3 30 3 31 3 32 ...
Page 89: ...5 3 2 Main Circuit Diagram ...
Page 90: ...agram ...
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Page 98: ...Fig 3 5 6 3 32 ...
Page 99: ...10 1 3 4 A B C D E G 2 5 6 7 8 9 F 5 4 Motor System Circuit Diagram Fig 3 5 7 3 33 3 34 ...
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