LG LAD-9600, Руководство по обслуживанию

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4-4
Does spindle rotate
normally?
Normal spindle control signal
and hall sensor input?
Check IC301 pin 6 and
CN302 pin 4, 5, 6, 7, 8, 9,
10 (Figure 5)
Normal spindle
driver power ?
NO
NO
Check IC301 pin 43
NO
YES YES
YES
Normal spindle driver output
from IC301 ?
NO
Check IC301 pin 37, 39,
40, and CN302 pin 1, 2, 3
(Figure 6)
Continue
3. SPINDLE
Focus on OK?
Normal focus actuator
driving signal?
Check IC301 pin 10, 25, 26,
and CN101 pin 1, 4
(Figure 7)
Normal focus error signal?
NO
NO
Check IC201 pin 109
(Figure 7)
NO
YES YES
YES
Check disc
Continue
4. FOCUS SERVO