Toshiba SD-33VB - DVD Part Circuit Diagrams

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2. SDRAM CLOCK
1) MT1379 main clock is at 27MHz(X501)
(IC502,IC503 PIN 35)
DCLK = 93MHz, Vp-p=2.2, Vmax=2.7V
FIG 2-1
3. TRAY OPEN/CLOSE SIGNAL
1) Tray open/close waveform
OPEN((CN203 PIN 3)
CLOSE(CN203 PIN 2)
TROPEN(IC202 PIN 1)
TRCLOSE(IC202 PIN 2)
FIG 3-1