Tracking servo is NG.
Is TE signal normal?
Check peripheral
circuit of IC306.
Check IC502.
6
Y
N
Signal waveform at
tracking servo ON (CD)
TE signal
Pin 151 (TP406) of IC401
1.65V
RFRP signal
Pin 153 (TP408) of IC401
Search ON (SRCH)
Pin 38 (TP411) of IC401
ON search
Tracking servo on
Signal waveform at
tracking servo ON (DVD)
Fig. 1-3-13
Fig. 1-3-14
Fig. 1-3-15
1-12
Содержание DD-8020
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Страница 39: ...Fig 3 4 5 4 3 3 Front Display Power Switch Block Diagram 3 12 3 11 FWD REV ...
Страница 40: ...m Q502 Q501 PUDET2 IC306 Fig 3 4 6 4 4 Main Block Diagrams 4 4 1 Servo System Block Diagram 3 14 3 13 ...
Страница 41: ...Fig 3 4 7 4 4 2 Logical System Block Diagram 3 16 3 15 ...
Страница 44: ...Fig 3 5 3 5 2 Front Display Power Switch Circuit Diagram 3 22 3 21 ...
Страница 47: ...Fig 3 5 5 5 3 2 Main Circuit Diagram 3 25 3 26 3 27 3 28 ...
Страница 48: ...5 4 Output Circuit Diagram Fig 3 5 6 3 30 3 31 3 32 3 29 ...
Страница 50: ...3 34 5 5 Motor System Circuit Diagram Fig 3 5 8 ...
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