LG ZHD-311 Service Manual - Page 35

SLED CONTROL RELATED SIGNAL NO DISC CONDITION, Tray open waveform

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3) Tray open waveform OPEN(PDM03 PIN7) CLOSE(PDM03 PIN8) TROPEN(IC402 PIN 4) TRCLOSE(IC402 PIN 5) FIG 3-3 4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION) FMSO(2.0V/1.4V/1.0V) (IC501 PIN 19) STBY(5V) - (IC401 PIN 50) SL+(4.7V/3.6V/1.9V) (IC404 PIN 12) SL-(5.3V/3.7V/2.5V) (IC404 PIN 11) FIG 4-1 3-12

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3-12
4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)
FMSO(2.0V/1.4V/1.0V)
(IC501 PIN 19)
STBY(5V) – (IC401 PIN 50)
SL+(4.7V/3.6V/1.9V)
(IC404 PIN 12)
SL-(5.3V/3.7V/2.5V)
(IC404 PIN 11)
FIG 4-1
3) Tray open waveform
OPEN(PDM03 PIN7)
CLOSE(PDM03 PIN8)
TROPEN(IC402 PIN 4)
TRCLOSE(IC402 PIN 5)
FIG 3-3